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| IMP6303 POWER MANAGEMENT 3-Pin Microcontroller Power Supply Supervisor The IMP6303 is a 4.0V power supply supervisor circuits optimized for lowpower microprocessor (P), microcontroller (C) and digital systems. A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140ms after the supply has risen above the reset threshold. The IMP6303 has an active-low RESET output that is guaranteed to be in the correct state for VCC down to 1.1V. The reset comparator is designed to ignore fast transients on VCC. Low supply current makes the IMP6303 ideal for use in portable and battery operated equipment. The IMP6303 is available in a compact 3-pin SOT23, TO-92 and 5 pin SOT23-5 packages. Key Features N Monitor 4.0V supply N 140ms min. reset pulse width N Active-low reset valid with 1.1V supply N Small 3-pin SOT-23 package N Small 3-pin TO-92 package N Small 5-pin SOT-23-5 package N No external components N Specified over full temperature range -- - 40C to 105C Applications N N N N N Embedded controllers Battery operated systems Intelligent instruments Wireless communication systems PDAs and handheld equipment Block Diagrams VCC VCC IMP6303 RESET (RESET) GND RESET Input VCC P GND 6303_01.eps (c) 2001 IMP, Inc. 408-432-9100/www.impweb.com 1 IMP6303 Pin Configuration SOT-23 (RESET) RESET 1 IMP6303 3 GND TO-92 SOT-23-5 IMP6303 1 2 3 NC GND NC 1 IMP6303 2 3 4 RESET (RESET) 6303_07.eps 6303_06.eps 5 VCC VCC 2 6303_02.eps VCC GND RESET (RESET) Ordering Information 1 Part Number Reset Threshold (V) IMP6303 Active LOW Reset IMP6303JEUR-T 4.00 Temperature Range - 40C to +105C Pin-Package 3-SOT23 Package Marking2 (XX Lot Code) CWXX Notes: 1. Tape and Reel packaging is indicated by the -T designation. 2. Devices may also be marked with full part number: 6303L, 6303M etc. XX refers to lot. Related Products IM6303 Max. Supply Current Package Pins Package Type Active-LOW RESET output 15A 3 SOT-23 I IMP6303 15A 3 TO-92 I IMP6303 15A 5 SOT-23-5 I 2 408-432-9100/www.impweb.com (c) 2001 IMP, Inc. S IMP6303 Absolute Maximum Ratings Pin Terminal Voltage with Respect to Ground VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V RESET, RESET . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V) Input Current at VCC . . . . . . . . . . . . . . . . . . . 20mA Output Current: RESET, RESET . . . . . . . . . 20mA Rate of Rise at VCC . . . . . . . . . . . . . . . . . . . . 100V/s These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability Power Dissipation (TA = 70C) . . . . . . . . . . 320mW (Derate 4mW/C above 70C) Operating Temperature Range . . . . . . . . . . -40C to 105C Storage Temperature Range . . . . . . . . . . . . . -65C to 160C Lead Temperature (soldering, 10 sec) . . . . . 300C Electrical Characteristics Unless otherwise noted VCC is over the full voltage range, TA = -40C to 105C. Typical values at TA = 25C, VCC = 5V for L/M/J devices. Parameter Input Voltage (VCC) Range Supply Current Reset Threshold Symbol Conditions VCC ICC VTH TA = 0C to 70C TA = - 40C to 105C TA = - 40C to 85C VCC < 4.0V TA = 25C TA = - 40C to 85C TA = 85C to 105C Min 1.1 1.2 3.93 3.89 3.80 Typ 9 4.00 Max 5.5 5.5 15 4.06 4.10 4.20 Units V A Reset Threshold Stability VCC to Reset Delay Reset Active Timeout Period Low RESET Output Voltage VOL VOL High RESET Output Voltage Notes: VOH VCC = VTH to VTH - 100mV TA = - 40C to 85C TA = 85C to 105C VCC = VTH min., ISINK = 1.2mA VCC = VTH min., ISINK = 3.2mA VCC > 1.1V, ISINK = 50A VCC > VTH max., ISOURCE = 500A VCC > VTH max., ISOURCE = 800A 140 100 30 20 240 0.3 560 840 V 0.4 0.3 ppm/C s ms 0.8VCC VCC -1.5 V 1. Production testing done at TA = 25C. Over-temperature specifications guaranteed by design only. 2. RESET output is active LOW for the IMP6303. (c) 2001 IMP, Inc. Microprocessor Supervisor 3 IMP6303 Pin Descriptions Name GND RESET VCC Function Ground RESET is asserted LOW if VCC falls below the reset threshold and remains LOW for the 240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold. Power supply input voltage. Detailed Descriptions Reset Timing The reset signal is asserted-LOW when the VCC signal falls below the threshold trip voltage and remains asserted for 140ms minimum after the VCC has risen above the threshold. 5V VCC 0V VTH Active Reset Timeout Period 140ms minimum IMP6303 5V RESET 0V 6303_03.eps Figure 1. Reset Timing Diagram 4 408-432-9100/www.impweb.com (c) 2001 IMP, Inc. S IMP6303 Application Information Negative VCC Transients The IMP6303 protect Ps from brownouts and low VCC. Short duration transients of 100mV amplitude and 20s or less duration typically do not cause a false RESET. Valid Reset with VCC under 1.1V To ensure logic inputs connected to the IMP6303 RESET pin are in a known state when VCC is under 1.1V, a 100k pull-down resistor at RESET is needed. The value is not critical. Bi-directional Reset Pin Interfacing The IMP6303 can interface with P/C bi-directional reset pins by connecting a 4.7k resistor in series with the IMP6303 reset output and the P/C bi-directional reset pin. BUF Buffered RESET VCC VCC Power Supply IMP6303 RESET GND 100k Power Supply IMP6303 4.7k RESET GND C or P RESET Input GND Bi-directional I/O Pin (Example: 68HC11) 6303_06.eps 6303_04.eps Figure 2. RESET Valid with VCC Under 1.1V Figure 3. Bi-directional Reset Pin Interfacing (c) 2001 IMP, Inc. Microprocessor Supervisor 5 IMP6303 Package Dimensions Plastic SOT-23 (3-Pin) b Inches Min A A1 A2 b c D E E1 e e1 L L1 o A B C D E F G H I J K L M A A1 A2 b c D E E1 e e1 L L1 Millimeters Max Min 0.89 0.01 0.88 0.30 0.08 2.80 2.10 1.20 0.95 BSC 1.90 BSC 0.40 0.54 REF 0 4.45 4.32 12.70 0.406 2.41 1.14 1.14 2.16 3.30 0.35 2.36 45 3.00 0.95 0.05 0.90 0.30 0.08 2.80 2.60 1.50 0.95 BSC 1.90 BSC 0.35 0.60 REF 0 8 1811_t04.eps Max 1.12 0.10 1.02 0.50 0.20 3.04 2.64 1.40 Plastic SOT-23* (3-Pin) 0.035 0.044 0.0004 0.004 0.035 0.040 0.012 0.020 0.003 0.008 0.110 0.120 0.083 0.104 0.047 0.055 0.37 BSC 0.07 BSC 0.016 0.024 0.021 REF 0 8 E1 E e D A A2 C 0.60 8 4.95 4.96 15.49 0.559 2.67 1.52 1.52 2.41 3.94 0.51 2.92 60 A1 e1 L L1 SOT-23 (3-Pin).eps Plastic TO-92 (3-Pin) A TO-92 (3-Pin) 0.175 0.170 0.500 0.016 0.095 0.045 0.45 0.085 0.130 0.014 0.093 45 0.195 0.192 0.610 0.022 0.105 0.60 0.060 0.095 0.155 0.020 0.115 60 B M L Section A-A C D J Section A-A E K D 0.118 Typical F Plastic SOT-23** (5-Pin) 0.037 0.057 0.001 0.005 0.035 0.050 0.011 0.019 0.003 0.007 0.109 0.117 0.101 0.117 0.058 0.066 0.037 BSC 0.074 BSC 0.013 0.021 0.002 REF 0 8 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.70 G 1 H 2 3 I Bottom View TO-92.eps Plastic SOT-23 (5-Pin) D e1 E1 E 0.55 e b A A2 C A1 L L1 SOT-23 (5-Pin).eps 6 408-432-9100/www.impweb.com (c) 2001 IMP, Inc. S IMP6303 (c) 2001 IMP, Inc. Microprocessor Supervisor 7 IMP6303 IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Fax: 408-434-5904 e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company and product names are trademarks of their respective owners. (c) 2001 IMP, Inc. Printed in USA Publication #: 1023 Revision: A Issue Date: 10/26/01 Type: Preliminary |
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