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OM7635SM
SURFACE MOUNT POSITIVE ADJUSTABLE 1.0 AMP VOLTAGE REGULATOR
Isolated Hermetic Surface Mount Package 1.0 Amp, Positive Adjustable Voltage Regulator
FEATURES
* * * * * * * Hermetic Isolated Surface Mount Package Adjustable Output Voltage Eliminates Stocking Fixed Voltages Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Hi-Rel Screened Electrically Similar To Industry Standard P/N LM117
DESCRIPTION
This three terminal positive regulator is supplied in a hermetically sealed metal surface mount package. All protective features are designed into the circuit, including thermal shutdown, current limiting and safe-area control. With heat sinking, they can deliver over 1.0 amp of output current. This unit features output voltages that can be trimmed using external resistors, from 1.2 volts to 37 volts.
ABSOLUTE MAXIMUM RATINGS
Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405 V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance: JC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W Lead Temperature at Case (5 sec). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225C
3.5
4 11 R1 Supersedes 1 05 R0
3.5 - 127
OM7635SM
ELECTRICAL CHARACTERISTICS
Parameter Reference Voltage Symbol VREF
-55C TA 125C, IL = 8mA (unless otherwise specified)
Min. 1.20 Max. 1.30 1.30 1.30 9 23 15 15 15 15 16 mV mV mV V Unit
Test Conditions VDIFF = 3.0V, TA = 25C VDIFF = 3.3V VDIFF = 40V
* * * * *
1.20 1.20 -9 -23 -15 -15 -15 -15 -16
Line Regulation (Note 1) Load Regulation (Note 1)
RLINE
3.0V VDIFF 40V, Vout = Vref, TA = 25C 3.3V VDIFF 40V, Vout = Vref
RLOAD
VDIFF = 3.0V, 10mA IL 1.5A, TA = 25C VDIFF = 3.3V, 10mA IL 1.5A VDIFF = 40V, 10mA IL 300mA, TA = 25C VDIFF = 40V, 10mA IL 195mA
Thermal Regulation
VRTH
Vin = 14.6V, IL = 1.5A Pd = 20 Watts, t = 20 ms, TA =25C
Ripple Rejection (Note 2) Adjustment Pin Current
RN
f = 120 Hz, Vout = Vref CAdj = 10 F, Iout = 100 mA
*
66
dB
IAdj
VDIFF = 3.0V, TA = 25C VDIFF = 3.3V VDIFF = 40V
100
* *
-5
100 100 5 5 5 5 5 5 5.0
A
Adjustment Pin Current Change
IAdj
VDIFF = 3.0V, 10mA IL 1.5A, TA = 25C VDIFF = 3.3V, 10mA IL 1.5A VDIFF = 40V, 10mA IL 300mA, TA = 25C VDIFF = 40V, 10mA IL 195mA 3.0V VDIFF 40V, TA = 25C 3.3V VDIFF 40V
* * * * * * *
-5 -5 -5 -5 -5
A
Miminum Load Current
ILmin
VDIFF = 3.0V, VOUT = 1.4V (forced) VDIFF = 3.3V, VOUT = 1.4V (forced) VDIFF = 40V, VOUT = 1.4V (forced)
5.0 5.0 1.5 0.18 3.5 1.5
mA
Current Limit (Note 2)
ICL
VDIFF = 15V VDIFF = 40V, TA = 25C
A
Notes: 1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used. Changes in output voltage due to heating effects must be taken into account separately. 2. If not tested, shall be guaranteed to the specified limits. 3. The * denotes the specifications which apply over the full operating temperature range.
MECHANICAL OUTLINE
.425
PIN CONNECTION
3.5
.100 .200
2 1
.425 .035 WIDE FLAT 3 PLCS.
3
.350 MIN.
.020 .115 .160
Pin 1: Pin 2: Pin 3: Case:
VOUT Adjust VIN Isolated
.020
.080

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