Positive Voltage Regulators from 1.7V Currents 100mA CA3085, CA30

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Positive Voltage Regulators from 1.7V Currents 100mA CA3085, CA30

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CA3085, CA3085A CA3085B
Positive Voltage Regulators from 1.7V Currents 100mA
CA3085, CA3085A, CA3085B silicon monolithic integrated circuits designed specifically service voltage regulators output voltages ranging from 1.7V currents milliamperes. block diagram CA3085 Series shown. diagram shows connecting terminals that provide access regulator circuit components. voltage regulators provide important features such frequency compensation, short-circuit protection, temperaturecompensated reference voltage, current limiting, booster input. These devices useful wide range applications regulating high-current, switching, shunt, positive negative voltages. They also applicable current dual-tracking regulation. CA3085A CA3085B have output current capabilities 100mA CA3085 12mA without external pass transistors. However, devices provide voltage regulation load currents greater than 100mA with suitable external pass transistors. CA3085 Series unregulated input voltage ranging from 7.5V (CA3085), 7.5V (CA3085A), 7.5V (CA3085B) minimum regulated output voltage (CA3085), (CA3085A), (CA3085B).
April 1994
Features
100mA Output Current Input Output Short-Circuit Protection Load Line Regulation 0.025% Compatible with LM100 Series Adjustable Output Voltage
Applications
Shunt Voltage Regulator Current Regulator Switching Voltage Regulator High-Current Voltage Regulator Combination Positive Negative Voltage Regulator Dual Tracking Regulator
RANGE VOUT RANGE IOUT (mA) (Note LOAD REGULATION (%VOUT) 0.15 0.15
TYPE CA3085 CA3085A CA3085B NOTE:
Ordering Information
PART NUMBER CA3085, CA3085E, TEMPERATURE RANGE -55oC -55oC +125oC +125oC PACKAGE Metal Lead Plastic
This value extended 100mA; however, regulation specified beyond 12mA.
Pinouts
CA3085, (PDIP) VIEW
CURRENT BOOSTER V+IN CURRENT LIMIT COMP/INHIBIT VREF
Functional Block Diagram
UNREGULATED INPUT (V+IN)
CURRENT BOOSTER
COMPENSATION EXTERNAL INHIBIT
CURRENT SOURCE
STARTING CIRCUIT
VOLT. REF. AMPL. SOURCE
FREQ. COMP. ERROR AMPL. SERIES PASS AMPL.
CA3085S, (CAN) VIEW
CURRENT LIMIT CURRENT BOOSTER COMP/INHIBIT VREF
SUBSTRATE VVREF
REGULATED OUTPUT
CURRENT LIMITING
V+IN
INPUT
CURRENT
LIMITING
CAUTION: These devices sensitive electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright
Harris Corporation 1994
File Number
491.4
7-31
Specifications CA3085, CA3085A, CA3085B
Absolute Maximum Ratings
Supply Voltage +7.0V Unregulated Input Voltage CA3085 CA3085A. CA3085B. Storage Temperature Range -65oC +150oC Junction Temperature +175oC Plastic Package +150oC Lead Temperature (Soldering 10s) +265oC
Thermal Information
Thermal Resistance Metal (Without Heat Sink) 156oC/W 68oC/W Plastic Package 155oC/W Maximum Package Power Dissipation Plastic (Without Heat Sink) 55oC 630mW Above 55oC Derate Linearly 6.67mW/oC Metal (With Heat Sink) 55oC. 1.6W Above 55oC Derate Linearly 16.7mW/oC
CAUTION: Stresses above those listed "Absolute Maximum Ratings" cause permanent damage device. This stress only rating operation device these other conditions above those indicated operational sections this specification implied.
Operating Conditions
Operating Voltage Range +1.7V +46V Operating Temperature Range -55oC +125oC
Maximum Voltage Ratings
following chart gives range voltages which applied terminal listed vertically with respect terminals listed horizontally. example, voltage range between vertical Terminal Number horizontal Terminal Number -10V. TERMINAL NUMBER NOTES: Voltages normally applied between these terminals; however, voltages appearing between these terminals safe, specified voltage limits between other terminals exceeded. (CA3085); (CA3085A); (CA3085B)
Note Note
Note Note
Note Note -103
Note Note Note Note (Note
Note Note Note Note (Note
Note (Note Note (Note (Note (Note Substrate Case
Maximum Current Ratings
TERMINAL NUMBER (mA) IOUT (mA) -0.1 -0.1
7-32
Specifications CA3085, CA3085A, CA3085B
Electrical Specifications
+25oC, Unless Otherwise Specified CA3085 PARAMETERS SYMBOL TEST CONDITIONS CA3085A CA3085B UNITS
CHARACTERISTICS Reference Voltage Quiescent Regulator Current VREF Iquiescent V+IN (Figure V+IN (Figure V+IN (Figure V+IN Input Voltage Range Maximum Output Voltage VIN(range) VO(MAX) V+IN (Note 365; Term. (Figure V+IN (Figure (Figure
3.65
4.05
Maximum Output Voltage Input Output Voltage Differential Limiting Current
VO(MIN) VIN-VOUT
ILIM
V+IN 16V, V+OUT 10V, RSCP (Note (Figure 100mA, RSCP 100mA, RSCP +70oC 12mA, RSCP
Load Regulation (Note
0.025
0.15
0.025
0.15
%VOUT %VOUT
0.035
0.035
0.003
%VOUT
Line Regulation (Note
1mA, RSCP 1mA, RSCP +70oC
0.025 0.04
0.15
0.025 0.04
0.075
0.025 0.04
0.04 0.08
Equivalent Noise Output Voltage
VNOISE
V+IN (Figure
CREF CREF 0.22µF
mVp-p mVp-p
Ripple Rejection
V+IN 25V, 1kHz (Figure VREF, (Note
CREF CREF
%/oC
Output Resistance Temperature Coefficient Reference Output Voltages
V+IN 25V, 1kHz (Figure VREF 1.6V
0.075
0.075
0.075
0.0035
0.0035
0.0035
7-33
Specifications CA3085, CA3085A, CA3085B
Electrical Specifications
+25oC, Unless Otherwise Specified (Continued) CA3085 PARAMETERS SYMBOL TEST CONDITIONS CA3085A CA3085B UNITS
LOAD TRANSIENT RECOVERY TIME Turn tOFF V+IN 25V, +50mA Step (Figure V+IN 25V, -50mA Step (Figure
Turn
LOAD TRANSIENT RECOVERY TIME Turn Turn NOTES: (CA3085), (CA3085A), (CA3085B) RSCP: Short Circuit Protection Resistance Load Regulation [VOUT VOUT(initial)] 100% Line Regulation [VOUT VOUT(initial)(VIN)] 100% tOFF V+IN 25V, 1kHz, Step
V+IN UNREG. INPUT
STANCOR CA3085, BLACK WHITE GREEN 1.5k REGULATED OUTPUT INV. INPUT CURRENT LIMITING CURRENT BOOSTER VOUT
1.5k
COMPENSATION EXTERNAL INHIBIT
120V 60Hz
BLACK 1N3193 500µF
VREF
VOUT 3.5V 90mA) Regulation 0.2% (Line Load) Ripple 0.5mV Full Load FIGURE APPLICATION CA3085 SERIES TYPICAL POWER SUPPLY
SUBSTRATE
Resistance Values Ohms FIGURE SCHEMATIC DIAGRAM CA3085 SERIES
7-34
CA3085, CA3085A, CA3085B Test Circuits Typical Performance Curves
VOUT V+IN IQUIESCENT 100pF CA3085, VREF QUIESCENT REGULATOR CURRENT (mA) AMBIENT TEMPERATURE (TA) +25oC
TEST VREF IQUIESCENT VOUT(MAX) VOUT(MIN)
+1.6
CONNECT TERM Open Open Ground Terminal No.1
Open Open Closed Open
INPUT VOLTS (V+IN)
FIGURE TEST CIRCUIT VREF, IQUIESCENT, VOUT(MAX), VOUT(MIN)
FIGURE IQUIESCENT V+IN
NORMALIZED QUIESCENT REGULATOR CURRENT
NORMALIZED CURVE GENERATED FROM IQUIESCENT V+IN CURVE WITH +25oC (NOTE RSCP CA3085, (NOTE ILIM (NOTE VOUT
V+IN
AMBIENT TEMPERATURE (oC)
NOTES: VOUT limits current inversely proportional RSCP FIGURE TEST CIRCUIT LIMITING CURRENT
FIGURE NORMALIZED IQUIESCENT
LOAD REGULATION VOUT
LIMITING CURRENT (mA) RSCP INPUT VOLTS (V+IN) OUTPUT VOLTS (V+OUT) AMBIENT TEMPERATURE (oC)
INPUT VOLTS (V+IN) OUTPUT VOLTS (V+OUT) AMBIENT TEMPERATURE (TA) +25oC RSCP
-0.1
-0.2
-0.3 -0.4
LOAD CURRENT (mA)
FIGURE ILIM
FIGURE LOAD REGULATION CHARACTERISTICS
7-35
CA3085, CA3085A, CA3085B Test Circuits Typical Performance Curves
(Continued)
INPUT VOLTS (V+IN) OUTPUT VOLTS (V+OUT) 0.05 LINE REGULATION (%/V) 0.04 0.03 0.02 0.01 AMBIENT TEMPERATURE (oC) 100pF V+IN CA3085, CREF VNOISE
FIGURE LINE REGULATION TEMPERATURE CHARACTERISTICS
FIGURE TEST CIRCUIT NOISE VOLTAGE
VOUT
TEST PROCEDURES TEST CIRCUIT RIPPLE REJECTION OUTPUT RESISTANCE Output Resistance Conditions +25V, CREF Short 1kHz that 4VRMS Read VOUT VTVM, such Hewlett-Packard, HP400D Equivalent Calculate ROUT from ROUT VOUT(R
CA3085,
VTVM HEWLETT PACKARD HP400D EQUIV. GREEN 4VRMS
CREF
100pF STANCOR TP-3 BLACK BLACK YELLOW
Ripple Rejection Conditions +25V, CREF Short 1kHz that 3VRMS Read VOUT VTVM, such Hewlett-Packard, HP400D Equivalent Calculate Ripple Rejection from (E1/VOUT) Ripple Rejection Conditions Repeat Ripple Rejection with CREF
FIGURE TEST CIRCUIT RIPPLE REJECTION OUTPUT RESISTANCE
NORMALIZED OUTPUT RESISTANCE (RO)
OUTPUT RESISTANCE
INPUT VOLTS (V+IN) AMBIENT TEMPERATURE (TA) +25oC
INPUT VOLTS (V+IN) FREQUENCY 1kHz OUTPUT RESISTANCE (RO) 0.075 +25oC) AMBIENT TEMPERATURE (oC)
0.08 0.06 0.04 0.02 0.01 FREQUENCY (kHz) 1000
FIGURE
FIGURE NORMALIZED
7-36
CA3085, CA3085A, CA3085B Test Circuits Typical Performance Curves
REFERENCE VOLTS (VREF) +1.6V +25oC) LOAD CURRENT (IL) INPUT VOLTS MINUS OUTPUT VOLTS (VIN VOUT) CHANGE REFERENCE VOLTAGE VREF CHANGE OUTPUT VOLTAGE VOUT
(Continued)
-0.1 -0.2 -0.3
OPERATION WITHOUT HEAT SINK OPERATION WITH HEAT SINK
INPUT VOLTS (VIN) INPUT VOLTS (VIN)
AMBIENT TEMPERATURE (oC)
OUTPUT (mA)
FIGURE TEMPERATURE COEFFICIENT VREF VOUT
FIGURE DISSIPATION LIMITATION (VIN VOUT IOUT)
100µF V+IN CA3085, 100pF QUIESCENT OUTPUT CURRENT 1.5mA 8.2k PULSE GEN. V+OUT TYPE 2N3261
tr(on)
tr(off)
VOUT
100mV/cm
VPULSE
50mA STEP (1µs/cm)
FIGURE TURN-ON TURN-OFF RECOVERY TIME TEST CIRCUIT WITH ASSOCIATED WAVEFORMS
Application Note AN6157 further information
7-37
CA3085, CA3085A, CA3085B Typical Regulator Circuits
(UNREGULATED SUPPLY)
TYPE 2N5497 CA3085, VOUT (NOTE (NOTE (REGULATED OUTPUT) V-IN 0.001µF RLIMIT
LOAD
(NOTE
CA3085, 100pF
VREF
NOTE: Selected Desired Output
N-P-N Silicon Transistor that handle Load Current such 2N3772 Equivalent NOTE 200µA FIGURE TYPICAL CURRENT REGULATOR CIRCUIT
FIGURE TYPICAL HIGH CURRENT VOLTAGE REGULATOR CIRCUIT
V+IN (50V) CA3085, 0.001µF RSCP (NOTE V+OUT
1.5mH
CA3085, 0.001µF (NOTE (NOTE V-OUT
CA3085, 50µF (NOTE OUTPUT
1.5K
RSCP (NOTE
0.001µF
(50V)
50µF (50V)
Resistance Values Ohms 1N4001 Equivalent 2N5322 Equivalent NOTE: (Max) FIGURE TYPICAL SWITCHING REGULATOR CIRCUIT
Resistance Values Ohms 2N2102 Equivalent P-N-P Silicon Transistor (2N5322 Equivalent) N-P-N Silicon Transistor that handle desired Load Current (2N3772 Equivalent) NOTE: VOUT RSCP: Short Circuit Protection Resistance FIGURE COMBINATION POSITIVE NEGATIVE VOLTAGE REGULATOR CIRCUIT
7-38

Positive Voltage Regulators from 1.7V Currents 100mA CA3085, CA30

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