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| LT1716 SOT-23, 44V, Over-The-Top, Micropower, Precision Rail-to-Rail Comparator FEATURES s s DESCRIPTIO s s s s s s s s Operates from 2.7V to 44V Over-The-Top(R): Input Common Mode Range Extends 44V Above V -, Independent of V + Micropower: 35A IQ Offset Voltage: 1.5mV Max 5-Pin SOT-23 Package Valid Output with Either Input 5V Below V - Rail-to-Rail Output Swing Output Can Drive Loads Above V + Internal Pull-Up Current - 40C to 125C Operating Temperature Range The LT(R)1716 comparator operates on any total power supply voltage between 2.7V and 44V drawing 35A of quiescent current. The LT1716 has a unique input stage that can be taken 44V above V -, independent of V + supply. (Built-in resistors protect the inputs for faults below the negative supply of up to 5V.) The inputs can withstand 44V both differential and common mode. The output stage includes a class "B" pull-up current source, eliminating the need for an external resistive pullup and saving power. Output voltage swings to within 35mV of the negative supply and 55mV of the positive supply, which makes the comparator a good choice for low voltage single supply operation. The output stage is also designed to drive loads connected to a higher supply than the LT1716 supply, the same as an open collector output stage. The LT1716 is available in a SOT-23 5-lead package. , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a registered trademark of Linear Technology Corporation. APPLICATIO S s s s s s Power Supply Monitors Relay/Lamp Driver Oscillators Peak Detector Level Shifting TYPICAL APPLICATIO 5V TO 44V 1M LAMP ON/OFF 100k 5k RS 0.15 1W 0.25A TO 2.5A RS 0.04 IL CMPD6001 4 Lamp Monitor 3V 0.1F Input Bias Current vs Input Bias Voltage 12 8 4 6n VS = 5V, 0V INPUT BELOW SUPPLY INPUT ABOVE SUPPLY +IN = 10V IB- (A) - + 5 1 LAMP GOOD 3n 0 -3n -6n -100 1716 TA01 LT1716 3 2 +IN = 2V -0.5m -1m -1.5m -10 -5 0 5 10 VIN- (V) 15 20 45 U +IN = 2V 1716 TA02 U U 1716f 1 LT1716 ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW OUT 1 V- 2 +IN 3 + - 4 -IN 5 V+ Supply Voltage (V + to V -) ........................................ 44V Differential Input Voltage ......................................... 44V Input Voltage ................................................... 44V, - 5V Output Short-Circuit Duration (Note 2) ............ Indefinite Operating Temperature Range (Note 3) LT1716C/LT1716I ............................. - 40C to 85C LT1716H .......................................... -40C to 125C Specified Temperature Range (Note 4) LT1716C/LT1716I ............................. - 40C to 85C LT1716H .......................................... -40C to 125C Maximum Junction Temperature .......................... 150C Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C ORDER PART NUMBER LT1716CS5 LT1716IS5 LT1716HS5 S5 PART MARKING* LTYD S5 PACKAGE 5-LEAD PLASTIC SOT-23 TJMAX = 150C, JA = 250C/W *The temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. The q denotes the specifications which apply over the full operating temperature range of -40C TA 85C, otherwise specifications are at TA = 25C. Single supply operation V + = 5V, V - = 0V; VCM = V +/2 unless otherwise noted. (Note 4) SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS 0.5V < VCM < (VCC - 1V) 0C < TA < 70C - 40C < TA < 85C 0C < TA < 70C - 40C < TA < 85C VCM = V +/2 VCM = 0V VCM = 44V VCM = V +/2 q q q q q q q q ELECTRICAL CHARACTERISTICS LT1716C/LT1716I MIN TYP MAX 300 1600 2100 2500 UNITS V V V V/C V/C Input Offset Voltage Drift (Note 5) IOS Input Offset Current 2 2 3 15 1.3 0.9 50 75 13 9 1.4 44 110 110 110 2.4 200 100 500 35 50 65 55 75 60 85 2.7 IB Input Bias Current 20 35 2 3 6 1 0.5 89 81 95 V + = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = - 5V Input Voltage Range (Note 7) CMRR PSRR AVOL IS Common Mode Rejection Ratio Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain Supply Current RL = 1k; 1V < VOUT < 4V 0.5V VCM - 1V) 0.5V VCM < 44V, (Note 6) < (V + V - = 0V, VCM = 1.5V; 2.7V < V + < 36V q q q q q q q q q V/mV V/mV A A A A A A 1716f V + = 3V, RL = Open, VO = High q V + = 5V, RL = Open, VO = High q 35 40 q V + = 12V, RL = Open, VO = High 2 U nA A A nA nA nA A A mA V dB dB dB V W U U WW W LT1716 The q denotes the specifications which apply over the full operating temperature range of -40C TA 85C, otherwise specifications are at TA = 25C. Single supply operation V + = 5V, V - = 0V; VCM = V +/2 unless otherwise noted. (Note 4) SYMBOL ISC- ISC+ VOL PARAMETER Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V -) CONDITIONS VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = 1V ISINK = 0mA, VOVERDRIVE = -10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0A, VOVERDRIVE = 10mV ISOURCE = 10A VOUT = 40V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k q q q q q q q q q ELECTRICAL CHARACTERISTICS LT1716C/LT1716I MIN TYP MAX 10 60 20 85 20 75 200 550 30 130 0.5 3 35 110 300 900 55 185 2 5.5 UNITS mA A mV mV mV mV mV mV A s VOH Output Voltage Swing High (Referred to V +) Leakage Current Propagation Delay The q denotes the specifications which apply over the full operating temperature range of -40C TA 85C, otherwise specifications are at TA = 25C. Split supply operation VS = 15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS - 14.5V < VCM < 14V 0C < TA < 70C - 40C < TA < 85C 0C < TA < 70C - 40C < TA < 85C VCM = 0V VCM = 29V VCM = - 15V VCM = 0V q q q q q q q q LT1716C/LT1716I MIN TYP MAX 300 1500 2000 2400 UNITS V V V V/C V/C Input Offset Voltage Drift (Note 5) IOS Input Offset Current 2 2 3 15 0.9 1.3 60 100 9 13 1.4 14 110 98 110 2.4 500 400 10 70 1000 40 20 105 20 75 200 550 35 110 300 900 95 2.7 nA A A nA nA A A mA V dB dB dB V V/mV V/mV A mA A mV mV mV mV IB Input Bias Current 30 50 6 3 1 - 14.5 92 81 90 VCM = 29V VCM = - 15V VCM = - 20V Input Voltage Range (Note 7) CMRR PSRR AVOL IS ISC- ISC+ VOL Common Mode Rejection Ratio Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain Supply Current Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V -) RL = 6k; -14V < VOUT < 14V - 14.5V < VCM < 14V - 14.5V < VCM < 29V (Note 6) VS = 1.35V to 22V q q q q q q q q q VS = 15V, RL = Open, VO = High VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = -14V ISINK = 0mA, VOVERDRIVE = -10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA q q q q q q q 1716f 3 LT1716 The q denotes the specifications which apply over the full operating temperature range of -40C TA 85C, otherwise specifications are at TA = 25C. Split supply operation VS = 15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL VOH PARAMETER Output Voltage Swing High (Referred to V +) Leakage Current Propagation Delay CONDITIONS ISOURCE = 0A, VOVERDRIVE = 10mV ISOURCE = 10A VOUT = 25V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k q q q ELECTRICAL CHARACTERISTICS LT1716C/LT1716I MIN TYP MAX 45 140 0.6 5.5 75 210 2 9 UNITS mV mV A s The q denotes the specifications which apply over the operating temperature range of - 40C < TA < 125C, otherwise specifications are at TA = 25C. Single supply operation V+ = 5V, V- = 0V, VCM = VCC/2 unless otherwise noted. (Note 4) SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 5) IOS Input Offset Current VCM VCM = 0V VCM = 44V = V+/2 CONDITIONS 0.5V < VCM < (VCC - 1V) q q q q q q MIN LT1716H TYP 300 2 3 MAX 1600 2900 220 1.3 0.9 50 900 25 14 1.4 44 UNITS V V V/C nA A A nA nA nA A A mA V dB dB dB IB Input Bias Current VCM = V+/2 V + = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = - 5V 20 2 3 6 1 0.5 75 72 85 200 20 110 110 110 2.4 500 35 q q q q Input Voltage Range (Note 7) CMRR PSRR AVOL IS Common Mode Rejection Ratio Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain Supply Current per Amplifier RL = 1k, 1V < VOUT < 4V RL = 6k V + = 3V, RL = Open, VO = High V + = 5V, RL = Open, VO = High q 0.5V < VCM 0.5V < VCM < 44V (Note 6) V- = 0V, VCM = 1.5V, 2.7V < V + < 36V < (V+ - 1V) q q q q q 2.7 V V/mV V/mV 50 70 55 75 60 85 A A A A A A mA A 35 40 q q q q q q q q q q V + = 12V, RL = Open, VO = High ISC- ISC+ VOL Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V -) VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = 1V ISINK = 0mA, VOVERDRIVE = -10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0A, VOVERDRIVE = -10mV ISOURCE = 10A VOUT = 40V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k 5 60 10 110 20 75 200 550 50 130 1.7 6 60 170 480 1200 110 220 5 9 mV mV mV mV mV mV A s 1716f VOH Output Voltage Swing High (Referred to V+) Leakage Current Propagation Delay 4 LT1716 The q denotes the specifications which apply over the operating temperature range of - 40C < TA < 125C, otherwise specifications are at TA = 25C. Split supply operation VS = 15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 5) IOS Input Offset Current VCM = 0V VCM = 29V VCM = - 15V VCM = 0V q ELECTRICAL CHARACTERISTICS CONDITIONS - 14.5V < VCM < 14V q q q q q MIN LT1716H TYP 300 2 3 MAX 1500 2900 280 0.9 1.3 60 1400 20 30 1.4 14 UNITS V V V/C nA A A nA nA A A mA V dB dB dB IB Input Bias Current 30 50 6 3 1 - 14.5 85 70 80 500 50 5 70 110 93 110 2.4 1000 40 VCM = 29V VCM = - 15V VCM = - 20V Input Voltage Range (Note 7) CMRR PSRR AVOL IS ISC- ISC+ VOL Common Mode Rejection Ratio Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain Supply Current Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V -) RL = 6k; -14V < VOUT < 14V RL = 6k; -13V < VOUT < 13V VS = 15V, RL = Open, VO = High VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = -14V ISINK = 0mA, VOVERDRIVE = -10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0A, VOVERDRIVE = 10mV ISOURCE = 10A VOUT = 25V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k - 14.5V < VCM < 14V - 14.5V < VCM < 29V (Note 6) VS = 1.35V to 22V q q q q q q q q q 2.7 V V/mV V/mV 95 A mA A q q q q q q q q q 10 155 20 75 200 550 45 140 1.5 5.5 70 170 480 1200 120 250 5 10 mV mV mV mV mV mV A s VOH Output Voltage Swing High (Referred to V +) Leakage Current Propagation Delay Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. Note 3: The LT1716C/LT1716I are guaranteed functional over the operating temperature range of - 40C to 85C. The LT1716H is guaranteed functional over the operating temperature range of - 40C to 125C. Note 4: The LT1716C is guaranteed to meet specified performance from 0C to 70C. The LT1716C is designed, characterized and expected to meet performance from - 40C to 85 but is not tested or QA sampled at the temperatures. The LT1716I is guaranteed to meet specified performance from - 40C to 85C. The LT1716H is guaranteed to meet specified performance from - 40C to 125C. Note 5: This parameter is not 100% tested. Note 6: Typical input offset voltage of 500V at VCM = 44V above V - and a maximum input offset voltage of 4mV at VCM = 44V above V -. Note 7: If one input is within this input range, the other input can go 5V below V - and the output will be valid. 1716f 5 LT1716 TYPICAL PERFOR A CE CHARACTERISTICS Input Bias Current vs Common Mode Voltage 10 8 25C 6 IBIAS (A) VS = 15V 125C 0.1000 INPUT BIAS CURRENT (A) IBIAS CURRENT (nA) 85C 4 2 0 -2 0 5 10 15 VCM (V) -55C 125C INPUTS EXCEED SUPPLY 20 25 30 1716 G01 Output Low Voltage vs Sink Current OUTPUT HIGH VOLTAGE (RELATIVE TO V+) (V) 2.0 OUTPUT VOLTAGE (RELATIVE TO GND) (V) VOL AT 125C VOL AT 85C 1.2 VOL AT 25C 0.8 VOL AT -55C 0.4 V+ = 5V V - = 0V 0 2 4 6 8 10 12 14 16 18 20 LOADING SINK CURRENT (mA) 1716 G04 1.6 IBIAS (A) 0 Input Bias Current with Inputs Driven Below the Supply 200 0 -200 -55C < TA < 125C V+ = 2.7V TO 44V V - = 0V SUPPLY CURRENT (A) 80 70 60 50 40 30 20 -1000 -1200 -5 -4 -3 -2 VCM (V) -1 0 1716 G07 OUTPUT LOW POSITIVE SUPPLY CURRENT (A) IBIAS (A) -400 -600 -800 6 UW Input Bias Current vs Temperature 1.0000 V+ = 15V - V+ = 5V V- = 0V VCM = 2.5V 1 Input Bias Current vs Differential Input Voltage V + = 15V V - = -15V V = -15V VCM = 0V 0 -IN -1 +IN 0.0100 0.0010 0.0000 -0.0010 CURRENT OUT OF PIN CURRENT OUT OF PIN -2 -3 TRANSITION REGION -0.0100 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (C) 1716 G02 -4 -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 DIFFERENTIAL INPUT VOLTAGE (V) 1716 G03 Output High Voltage vs Source Current 5.0 V+ = 5V V - = 0V VOH AT -55C 10 8 6 4.8 VOH AT 85C, 125C VOH AT 25C 4.7 4 Input Bias Current with Inputs Driven Above the Supply V + = 5V V - = 0V 125C 85C -55C 25C 2 4.9 4.6 0 INPUTS EXCEED SUPPLY -2 0 5 10 15 20 25 30 35 40 45 50 LOADING SOURCE CURRENT (A) 1716 G05 4.5 0 5 10 15 20 25 30 35 40 45 50 VCM (V) 1716 G06 Supply Current vs Temperature 100 90 V + = 5V V - = 0V 1000 Positive Supply Current vs Output Sinking Current TA = 25C VS = 15V 100 VS = 5V OUTPUT HIGH 10 0 -50 -25 10 0 25 50 75 100 125 150 TEMPERATURE (C) 1716 G08 0.1 1 10 OUTPUT SINK CURRENT (mA) 100 1716 G09 1716f LT1716 TYPICAL PERFOR A CE CHARACTERISTICS Output Leakage Current vs Output Voltage 500 OUTPUT LEAKAGE CURRENT (nA) REVERSE CURRENT (mA) 450 0.4 0.3 0.2 0.1 0 OUTPUT CURRENT LIMIT (mA) V + = 5V V - = 0V TA = 25C 400 350 300 250 5 10 15 20 25 30 35 OUTPUT VOLTAGE (V) 40 45 Output Sinking Current vs Total Supply Voltage 30 25 20 15 10 5 0 1 10 TOTAL SUPPLY VOLTAGE (V) 100 1716 G12 OUTPUT SHORTED TO V + TA = 25C TOTAL SWITCHING TIME (s) OUTPUT SINKING LIMIT (mA) VS = 15V RISE 10 VS = 15V FALL TOTAL SWITCHING TIME (s) Total Switching Time vs Total Supply Voltage 100 RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VCM = 1/2 VTOTALSUPPLY VSTEP = 100mV VOVERDRIVE = 10mV FALL RISE 100 TOTAL SWITCHING TIME (s) TOTAL SWITCHING TIME (s) 10 1 0 10 20 30 TOTAL SUPPLY VOLTAGE (V) 40 1716 G15 UW 1716 G10 Reverse Supply Current 0.6 TA = 25C 0.5 30 25 20 Output Sinking Current Limit vs Temperature OUTPUT SHORTED TO V + VS = 5V 15 VS = 15V 10 5 0 -50 -25 0 5 10 15 20 REVERSE VOLTAGE (V) 25 1716 G27 0 25 50 75 100 125 150 TEMPERATURE (C) 1716 G11 Total Switching Time vs Temperature 100 RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VSTEP = 100mV VOVERDRIVE = 10mV 100 Total Switching Time vs Overdrive RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VSTEP = 100mV TA = 25C 15V FALL TIME 2.5V FALL TIME 15V RISE TIME 10 VS = 2.5V FALL VS = 2.5V RISE 1 -50 -25 1 0 25 50 75 100 125 150 TEMPERATURE (C) 1716 G13 2.5V RISE TIME 0 10 20 30 40 50 60 70 80 90 100 OVERDRIVE (mV) 1716 G14 Total Switching Time vs Pull-Up Resistor VOUT = 90% VFINAL VSTEP = 100mV VOVERDRIVE = 10mV TA = 25C VS = 15V RISE VS = 2.5V RISE Response Time VIN+ 30V 26V 10 5V VOUT 0V RL = 100k RL = 10k RL = OPEN 1 1 100 1000 10 PULL-UP RESISTOR (k) 10000 1716 G16 VS = 5V, 0V TIME (s) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 26V TO 30V VIN- = 29.99V 1716 G17 1716f 7 LT1716 TYPICAL PERFOR A CE CHARACTERISTICS Response Time VIN+ 30V 26V VIN+ 25V 21V 15V RL = 10k, 100k RL = OPEN 5V VOUT 0V TIME(s) VS = 5V, 0V VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 30V TO 26V VIN- = 26.01V 1716 G18 Response Time VIN+ 2.5V 2.4V RL = 10k RL = 100k RL = OPEN 2.6V VOUT VIN+ 5V 2.5V 5V VOUT 0V TIME(s) VS = 5V VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 2.4V TO 2.5V VIN- = 2.49V Response Time VIN+ 100mV 0V 15V -14.9V VIN+ -19V 15V VOUT -15V -15V VOUT VS = 15V TIME(s) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 110mV TO 0mV VIN- = 10mV 8 UW Response Time VIN+ 25V 21V 15V VOUT -15V Response Time VOUT -15V VS = 15V TIME(s) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 21V TO 25V VIN- = 24.99V 1716 G19 VS = 15V TIME(s) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 25V TO 21V VIN- = 21.01V 1716 G20 Response Time VIN+ 0V -100mV 15V VOUT -15V 0V Response Time RL = 10k, 100k RL = OPEN 1716 G21 TIME(s) VS = 5V VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 2.6V TO 2.5V VIN- = 2.51V 1716 G22 TIME(s) VS = 15V VOD = 10mV RL = 10k, 100k, OPEN VIN+ = -100mV TO 0V VIN- = -10mV 1716 G23 Below VS- Fault (Rising) -14.9V VIN+ -19V 15V RL = 10k, 100k RL = OPEN -15V VOUT Below VS- Fault (Falling) 1716 G24 TIME(s) VS = 15V RL = 10k, 100k, OPEN VIN+ = -19V TO -14.9V VIN- = -15V 1716 G25 TIME(s) VS = 15V RL = 10k, 100k, OPEN VIN+ = -14.9V TO -19V VIN- = -15V 1716 G26 1716f LT1716 APPLICATIO S I FOR ATIO The LT1716 comparator features low power operation with exceptional input precision with rail-to-rail input and output swing. The comparator operates flawlessly even when the inputs are pulled over the positive rail or below the negative rail. Supply Voltage The LT1716 operates from 2.7V to 44V. The comparator can be shut down by removing V +. In this condition, the input bias current is typically less than 3nA, even if the inputs are 44V above the negative supply. The LT1716 is protected against reverse battery voltages of up to 20V. The reverse battery current is resistive as shown in the reverse supply current graph. Inputs The comparator inputs can swing from 0.5V above to 44V above V -. If one input is within this range, the other input can be forced up to 5V below V - without phase reversal occuring at the output. The LT1716 has three stages--NPN, PNP and common base (see Simplified Schematic)--resulting in three distinct operating regions and two transition regions as shown in the Input Bias Current vs Common Mode typical performance curve. For input voltages about 0.8V or more below V +, the PNP input stage is active and the input bias current is typically - 4nA. The PNP differential input stage will have bias current that flows out of the device. With a differential input voltage of even just 100mV or so, there will be zero bias current into the higher of the two inputs, while the current flowing out of the lower input will be twice the measured bias current. When the input voltage is about 0.5V or less from V +, the NPN state is operating and the input bias current is typically 10nA. Increases in temperature will cause the voltage at which operation switches from the PNP stage to the NPN stage to move towards V +. The input offset voltage of the NPN stage is untrimmed and is typically 500V. U A Schottky diode in the collector of each NPN transistor of the NPN input stage allows the LT1716 to operate with either or both of its inputs above V +. At about 0.3V above V +, the NPN transistor is fully saturated and the input bias current is typically 4A at room temperature. The input offset voltage is typically 500V when operating above V +. The LT1716 will operate with its input 44V above V - , regardless of V +. The transition to the negative common mode input stage occurs at 0.3V above V - . Above this trip point the PNP stage is active. When the inputs are 0.3V below V - , the common base input stage is active in addition to the PNP stage. The input bias current out of each input becomes VIN/5k. The LT1716 is designed to operate when either input falls below the negative supply. Internal resistors protect the inputs for faults below the negative supply of up to 5V without phase reversal. The built-in 5k resistor limits the current at each input to 1mA at 5V below the negative supply. External matched input resistors can be added for increased voltage fault operation below the negative supply but the maximum input current should be kept under 1mA. Input Protection The inverting and noninverting input pins of the LT1716 have on-chip protection. ESD protection is provided to prevent damage during handling. The input transistors have voltage clamping and limiting resistors to protect against excursions as much as 5V below V - . There are no clamping diodes between the inputs and the maximum differential input voltage is 44V. Output The output stage of the LT1716 can drive loads connected to a supply more positive than the device, the same as comparators with open collector output stages. The output of the LT1716 can be pulled up to 44V above V - , regardless of V +. 1716f W U U 9 LT1716 W VCC R5 R8 D6 Q22 D8 Q14 OUT Q23 Q13 R6 R7 Q12 Q28 Q29 SI PLIFIED SCHE ATIC R4 30k D1 D2 Q11 Q53 Q25 Q24 R3 60k Q4 D5 Q39 Q15 Q16 Q10 Q17 Q18 Q6 B A Q8 Q9 Q1 Q2 Q31 R1 5k IN - Q3 Q32 Q26 Q27 D7 Q7 IN + R2 5k Q5 B 3A Q61 Q33 Q62 D3 D4 Q35 Q34 R9 A Q21 Q20 Q38 Q37 R10 R11 Q36 1716 SS Q30 VEE W 10 1716f LT1716 PACKAGE DESCRIPTIO U S5 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 2.90 BSC (NOTE 4) 1.22 REF 1.4 MIN 2.80 BSC 1.50 - 1.75 (NOTE 4) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 - 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 - 0.90 0.20 BSC 1.00 MAX DATUM `A' 0.01 - 0.10 1.90 BSC S5 TSOT-23 0302 0.62 MAX 0.95 REF 3.85 MAX 2.62 REF 0.30 - 0.50 REF 0.09 - 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 1716f Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 11 LT1716 TYPICAL APPLICATIO S Overcurrent Flag 4.5V TO 44V LT1634-1.25 113k 1% 4 10M 1% 10.7k 1% 0.1F RS 3V TO 44V RELATED PARTS PART NUMBER LTC1442 LTC1540 LT1634 LTC1921 LTC1998 DESCRIPTION Dual Micropower Comparator and 1% Reference Nanopower Comparator and 1% Reference Micropower Precision Shunt Reference Dual -48V Telecom Supply Monitor Micropower Li-Ion Battery Monitor COMMENTS 1.182V 1% Reference, 10mVMAX Input Offset 1.182V 1% Reference, 10mVMAX Input Offset 0.05%, 10A, 10ppm/C Max Drift, 1.25V, 2.5V, 4.096V, 5V, MSOP, SO-8, TO-92 Packages Monitors Two Supplies and Fuses 1% Trip Point Adjustable from 2.5V to 3.25V 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q U 11.8k 1% 3V - + 5 1 CMPD6263 OVERCURRENT LT1716 3 2 LOAD 10M 1% IMAX = 0.1 RS 1716 TA03 Charge/Discharge Indicator 0.1 CHARGE CURRENT LOAD + - 3V VCHARGER 0.1F 681 1% 4 1M 1% 681 1% - + 5 1 CMPD6263 CHARGE LT1716 3 2 1M 1% 1716 TA04 1716f LT/TP 0503 1K * PRINTED IN USA www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2002 |
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