OM7625NM
SURFACE MOUNT NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
Three Terminal, Adjustable Voltage, 1.0 Amp
Precision Negative Regulator In A Hermetic
Surface Mount Package
FEATURES
•
•
•
•
•
•
Surface Mount Hermetic Package
Adjustable Output Voltage
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 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 1.5 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
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
PIN CONNECTION
1
2
MECHANICAL OUTLINE
.140
.500
.015
.075
.157
.140
.140
.075
.030
MIN.
3.5
Pin 1: Adjust
Pin 2: V
OUT
3
.625
.415
Pin 3: V
IN
.062
.375
TOP VIEW
SIDE VIEW
BOTTOM VIEW
4 11 R1
Supersedes 1 05 R0
3.5 - 111
OM7625NM
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.
3.5
NXP MCU
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