OM7636SM
SURFACE MOUNT NEGATIVE ADJUSTABLE
1.0 AMP VOLTAGE REGULATOR
Isolated Hermetic Surface Mount Package
1.0 Amp, Negative Adjustable Voltage
Regulator
FEATURES
•
•
•
•
•
•
•
Isolated Hermetic 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 Type LM137
DESCRIPTION
This three terminal negative 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance:
θ
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
θ
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Lead Temperature at Case (5 sec)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C
3.5
4 11 R1
Supersedes 1 05 R0
3.5 - 129
OM7636SM
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
-55°C ≤ T
A
≤ 125°C, I
L
= 8mA (unless otherwise specified)
Min.
-1.275
Max.
-1.225
-1.20
-1.225
-1.20
9
23
25
25
25
25
5
mV
mV
mV
V
Unit
Test Conditions
V
DIFF
= 3.0V, T
A
= 25°C
V
DIFF
= 3.0V
V
DIFF
= 40V, T
A
= 25°C
V
DIFF
= 40V
•
•
•
•
-1.30
-1.275
-1.30
-9
-23
-25
-25
-25
Line Regulation
(Note 1)
Load Regulation
(Note 1)
R
LINE
3.0 V ≤
V
DIFF
≤ 40V, T
A
= 25°C
3.0 V ≤
V
DIFF
≤ 40V
V
DIFF
= 5.0V, 8mA ≤ I
L
≤ 1.5A
V
DIFF
= 12V, 8mA ≤ I
L
≤ 1.5A, T
A
= 25°C
V
DIFF
= 40V, 8mA ≤ I
L
≤ 200mA, T
A
= 25°C
V
DIFF
= 40V, 8mA ≤ I
L
≤ 100mA
R
LOAD
•
-25
-5
Thermal Regulation
V
RTH
V
in
= -14.6V, I
L
= 1.5A
P
d
= 20 Watts, t = 20 ms, T
A
= 25°C
Ripple Rejection
(Note 2)
Adjustment Pin Current
R
N
f = 120 Hz, V
out
= V
ref
C
Adj
= 10 µF
V
DIFF
= 3.0V
V
DIFF
= 40V
3.0V ≤
V
DIFF
≤ 40V
V
DIFF
= 5V, 8mA ≤ I
L
≤ 1.5A
V
DIFF
= 3.0V, V
out
= -1.4V (forced)
V
DIFF
= 10V, V
out
= -1.4V (forced)
V
DIFF
= 40V, V
out
= -1.4V (forced)
V
DIFF
≤ 5V
V
DIFF
= 40V, T
A
= 25°C
•
•
•
•
•
•
•
•
•
66
dB
I
Adj
100
100
-5
-5
5
5
3.0
3.0
5.0
1.5
0.24
3.5
1.2
A
mA
µA
µA
µA
Adjustment Pin
Current Change
Miminum Load Current
∆I
Adj
(Line)
∆I
Adj
(Load)
I
Lmin
Current Limit
(Note 2)
I
CL
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
.100
.200
PIN CONNECTION
2
.425
.035 WIDE
FLAT 3 PLCS.
1
3
3.5
.020
.350 MIN.
± .020
.115
.160
.080
Pin 1:
Pin 2:
Pin 3:
Case:
V
IN
Adjust
V
OUT
Isolated
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