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CS8182 Micropower 200 mA Low Dropout Tracking Regulator/Line Driver
The CS8182 is a monolithic integrated low dropout tracking regulator designed to provide adjustable buffered output voltage that closely tracks (10 mV) the reference input. The output delivers up to 200 mA while being able to be configured higher, lower or equal to the reference voltages. The output has been designed to operate over a wide range (2.8 V to 45 V) while still maintaining excellent DC characteristics. The CS8182 is protected from reverse battery, short circuit and thermal runaway conditions. The device also can withstand 45 V load dump transients and -50 V reverse polarity input voltage transients. This makes it suitable for use in automotive environments. The VREF/ENABLE lead serves two purposes. It is used to provide the input voltage as a reference for the output and it also can be pulled low to place the device in sleep mode where it nominally draws less than 30 A from the supply. Features * 200 mA Source Capability * Output Tracks within 10 mV Worst Case * Low Dropout (0.35 V typ. @ 200 mA) * Low Quiescent Current * Thermal Shutdown * Short Circuit Protection * Wide Operating Range * Internally Fused Leads in SO-8 Package
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8 1 SO-8 DF SUFFIX CASE 751
1 5 D2PAK 5-PIN DPS SUFFIX CASE 936A
PIN CONNECTIONS AND MARKING DIAGRAMS
VOUT GND GND Adj 1 8182 ALYW VIN GND GND VREF/ENABLE Tab GND Pin 1. VIN 2. VOUT 3. GND 4. Adj 5. VREF
CS8182 AWLYWW VOUT
VIN ESD Current Limit & SAT Sense
1 A WL, L YY, Y WW, W = Assembly Location = Wafer Lot = Year = Work Week
-
ENABLE
Adj ESD VREF/ENABLE ESD + GND
+
ORDERING INFORMATION*
Device CS8182YDF8 CS8182YDFR8 2.0 V CS8182YDPS5 Package SO-8 SO-8 D2PAK 5-PIN Shipping 95 Units/Rail 2500 Tape & Reel 50 Units/Rail 750 Tape & Reel
Thermal Shutdown
-
CS8182YDPSR5 D2PAK 5-PIN
Figure 1. Block Diagram
* Consult your local sales representative for SO-8 with exposed pads package option.
(c) Semiconductor Components Industries, LLC, 2001
1
October, 2001 - Rev. 15
Publication Order Number: CS8182/D
CS8182
MAXIMUM RATINGS*
Rating Storage Temperature Supply Voltage Range (continuous) Supply Voltage Range (normal, continuous) Peak Transient Voltage (VIN = 14 V, Load Dump Transient = 31 V) Voltage Range (Adj, VOUT, VREF/ENABLE) Maximum Junction Temperature Package Thermal Resistance, SO-8: Junction-to-Case, RJC Junction-to-Ambient, RJA Package Thermal Resistance, D2PAK, 5-Pin: Junction-to-Case, RJC Junction-to-Ambient, RJA ESD Capability (Human Body Model) Lead Temperature Soldering: 1. 60 second maximum above 183C. *The maximum package power dissipation must be observed. **Depending on thermal properties of substrate. RJA = RJC + RCA Reflow: (SMD styles only) (Note 1) Value -65 to 150 -15 to 45 3.4 to 45 45 -10 to 45 150 45 165 4.0 10-50** 2.0 230 peak Unit C V V V V C C/W C/W C/W C/W kV C
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CS8182
ELECTRICAL CHARACTERISTICS (VIN = 14 V; VREF/ENABLE > 2.75 V; -40C < TJ < +125C; COUT 10F; 0.1 < COUT-ESR < 1.0 @ 10 kHz, unless otherwise specified.)
Parameter Regular Output VREF - VOUT VOUT Tracking Error Dropout Voltage (VIN - VOUT) 4.5 V VIN 26 V, 100 A IOUT 200 mA, Note 2 VIN = 12 V, IOUT = 30 mA, VREF = 5.0 V, Note 2 IOUT = 100 A IOUT = 30 mA IOUT = 200 mA 4.5 V VIN 26 V, Note 2 100 A IOUT 200 mA, Note 2 Loop in Regulation VIN = 14 V, VREF = 5.0 V, VOUT = 90% of VREF, Note 2 VIN = 12 V, IOUT = 200 mA VIN = 12 V, IOUT = 100 A VIN = 12 V, VREF/ENABLE = 0 V VOUT = 5.0 V, VIN = 0 V f = 120 Hz, IOUT = 200 mA, 4.5 V VIN 26 V GBD -10 -5.0 - - - - - - 225 - - - - 60 150 - - 100 - 350 - - 0.2 - 15 75 30 0.2 - 180 10 5 150 500 600 10 10 1.0 700 25 150 55 1.5 - 210 mV mV mV mV mV mV mV A mA mA A A mA dB C Test Conditions Min Typ Max Unit
Line Regulation Load Regulation Adj Lead Current Current Limit Quiescent Current (IIN - IOUT)
Reverse Current Ripple Rejection Thermal Shutdown VREF/ENABLE Enable Voltage Input Bias Current 2. VOUT connected to Adj lead.
- VREF/ENABLE
0.80 -
2.00 0.2
2.75 1.0
V A
PACKAGE PIN DESCRIPTION
Package Lead Number SO-8 8 1 2, 3, 6, 7 4 5 D2PAK 5-PIN 1 2 3 4 5 Lead Symbol VIN VOUT GND Adj VREF/ENABLE Input voltage. Regulated output. Ground. Adjust lead. Reference voltage and ENABLE input. Function
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CS8182
CIRCUIT DESCRIPTION
ENABLE Function Output Voltage
By pulling the VREF/ENABLE lead below 2.0 V typically, (see Figure 5 or Figure 6), the IC is disabled and enters a sleep state where the device draws less than 55 A from supply. When the VREF/ENABLE lead is greater than 2.75 V, VOUT tracks the VREF/ENABLE lead normally.
The output is capable of supplying 200 mA to the load while configured as a similiar (Figure 2), lower (Figure 4), or higher (Figure 3) voltage as the reference lead. The Adj lead acts as the inverting terminal of the op amp and the VREF lead as the non-inverting. The device can also be configured as a high-side driver as displayed in Figure 7.
VOUT, 200 mA Loads VOUT C2** GND 10 F RF GND Adj RA
CS8182
CS8182
VOUT, 200 mA Loads VOUT C2** GND 10 F GND Adj
VIN GND GND C1* 1.0 F
B+
VIN GND GND C1* 1.0 F
B+
VREF/ ENABLE
5.0 V
VREF/ ENABLE
VREF
VOUT + VREF
Figure 2. Tracking Regulator at the Same Voltage
VOUT, 200 mA Loads VOUT C2** GND 10 F GND Adj
R VOUT + VREF(1 ) E) RA
Figure 3. Tracking Regulator at Higher Voltages
VOUT, 200 mA VOUT GND GND CS8182 VIN GND GND R VREF C1* 1.0 F B+
VIN CS8182 GND GND R1 C1* 1.0 F
B+
C2** 10 F
VREF/ ENABLE
VREF R2 from MCU
Adj
VREF/ ENABLE
VOUT + VREF( R2 ) R1 ) R2
Figure 4. Tracking Regulator at Lower Voltages
VIN 100 nF 5.0 V To Load 10 F (e.g. sensor) VOUT GND GND Adj CS8182 VIN GND GND I/O C1* 1.0 F C VREF (5.0 V)
Figure 5. Tracking Regulator with ENABLE Circuit
200 mA VOUT GND GND Adj CS8182 VIN GND GND MCU B+
6.0 V-40 V
CS8101
VREF/ ENABLE
VOUT + B ) * VSAT
VREF/ ENABLE
Figure 6. Alternative ENABLE Circuit
* C1 is required if the regulator is far from the power source filter. ** C2 is required for stability.
Figure 7. High-Side Driver
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CS8182
APPLICATION NOTES
Switched Application
The CS8182 has been designed for use in systems where the reference voltage on the VREF/ENABLE pin is continuously on. Typically, the current into the VREF/ENABLE pin will be less than 1.0 A when the voltage on the VIN pin (usually the ignition line) has been switched out (VIN can be at high impedance or at ground.) Reference Figure 8.
Ignition Switch VOUT CS8182 C2 10 F GND GND Adj VIN GND GND < 1.0 A C1 1.0 F VBAT
where: VIN(max) is the maximum input voltage, VOUT(min) is the minimum output voltage, IOUT(max) is the maximum output current, for the application,and IQ is the quiescent current the regulator consumes at IOUT(max). Once the value of PD(max) is known, the maximum permissible value of RJA can be calculated:
RQJA + 150C * TA PD
(2)
VOUT
VREF/ ENABLE
VREF 5.0 V
The value of RJA can then be compared with those in the package section of the data sheet. Those packages with RJA's less than the calculated value in equation 2 will keep the die temperature below 150C. In some cases, none of the packages will be sufficient to dissipate the heat generated by the IC, and an external heat sink will be required.
IIN VIN
Figure 8. External Capacitors
SMART REGULATOR(R)
IOUT VOUT
The output capacitor for the CS8182 is required for stability. Without it, the regulator output will oscillate. Actual size and type may vary depending upon the application load and temperature range. Capacitor effective series resistance (ESR) is also a factor in the IC stability. Worst-case is determined at the minimum ambient temperature and maximum load expected. The output capacitor can be increased in size to any desired value above the minimum. One possible purpose of this would be to maintain the output voltage during brief conditions of negative input transients that might be characteristic of a particular system. The capacitor must also be rated at all ambient temperatures expected in the system. To maintain regulator stability down to -40C, a capacitor rated at that temperature must be used. More information on capacitor selection for SMART REGULATOR(R)s is available in the SMART REGULATOR application note, "Compensation for Linear Regulators," document number SR003AN/D, available through the Literature Distribution Center or via our website at http://www.onsemi.com.
Calculating Power Dissipation in a Single Output Linear Regulator
Control Features
IQ
Figure 9. Single Output Regulator with Key Performance Parameters Labeled Heatsinks
A heatsink effectively increases the surface area of the package to improve the flow of heat away from the IC and into the surrounding air. Each material in the heat flow path between the IC and the outside environment will have a thermal resistance. Like series electrical resistances, these resistances are summed to determine the value of RJA:
RQJA + RQJC ) RQCS ) RQSA
(3)
where: RJC = the junction-to-case thermal resistance, RCS = the case-to-heatsink thermal resistance, and RSA = the heatsink-to-ambient thermal resistance. RJC appears in the package section of the data sheet. Like RJA, it is a function of package type. RCS and RSA are functions of the package type, heatsink and the interface between them. These values appear in heat sink data sheets of heat sink manufacturers.
The maximum power dissipation for a single output regulator (Figure 9) is:
PD(max) + {VIN(max) * VOUT(min)} IOUT(max) ) VIN(max)IQ
(1)
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CS8182
PACKAGE DIMENSIONS
SO-8 DF SUFFIX CASE 751-06 ISSUE T
A
8
D
5
C
E
H
1 4
0.25
M
B
M
h B C e A
SEATING PLANE
X 45 _
NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETER. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_
q
0.10 A1 B 0.25
M
L
CB
S
A
S
D2PAK 5-PIN D SUFFIX CASE 936A-02 ISSUE A
-T- A K B
12345 OPTIONAL CHAMFER
TERMINAL 6
E
U V
S H M L
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS A AND K. 4. DIMENSIONS U AND V ESTABLISH A MINIMUM MOUNTING SURFACE FOR TERMINAL 6. 5. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH OR GATE PROTRUSIONS. MOLD FLASH AND GATE PROTRUSIONS NOT TO EXCEED 0.025 (0.635) MAXIMUM. DIM A B C D E G H K L M N P R S U V INCHES MIN MAX 0.386 0.403 0.356 0.368 0.170 0.180 0.026 0.036 0.045 0.055 0.067 BSC 0.539 0.579 0.050 REF 0.000 0.010 0.088 0.102 0.018 0.026 0.058 0.078 5 _ REF 0.116 REF 0.200 MIN 0.250 MIN MILLIMETERS MIN MAX 9.804 10.236 9.042 9.347 4.318 4.572 0.660 0.914 1.143 1.397 1.702 BSC 13.691 14.707 1.270 REF 0.000 0.254 2.235 2.591 0.457 0.660 1.473 1.981 5 _ REF 2.946 REF 5.080 MIN 6.350 MIN
D 0.010 (0.254)
M
T
N G R
P
C
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CS8182
Notes
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CS8182
SMART REGULATOR is a registered trademark of Semiconductor Components Industries, LLC (SCILLC).
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: ONlit@hibbertco.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada JAPAN: ON Semiconductor, Japan Customer Focus Center 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan 141-0031 Phone: 81-3-5740-2700 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative.
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CS8182/D

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