OMNIREL COM137T Datasheet
COM137T
(COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP NEGATIVE,
ADJUSTABLE VOLTAGE REGULAT OR IN T O-257 PKG
Three Terminal, Precision Adjustable
Negative Voltage Regulator In TO-257 Package
FEATURES
• Built In Thermal Overload Protection
• Short Circuit Current Limiting
DESCRIPTION
These three terminal negative regulators are supplied in hermetically sealed packages. All protective features are designed into the circuit, including thermal shutdown,
current-limiting, and safe-area control. W ith heat sinking, these devices can deliver
up to 1.5 amps of output current. The unit also features output voltages that can be
fixed from -1.2 volts to -37 volts using external resistors.
ABSOLUTE MAXIMUM RATINGS T
Power Dissipation
TO-257. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 20 W
Input - Output Voltage Dif f erential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
300°C
Thermal Resistance, Junction to Case: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
Maximum Output Current: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-1.2 to -
37 VDC
Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . . . . - 55°C to +
125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4.25 to -41.25
@ 25°C
c
3.3
3.3 - 1
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246
COM137T
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
ELECTRICAL CHARACTERISTICS -55°C T
125°C, IL= 8mA (unless otherwise specified)
A
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage V
Line Regulation R
REF
LINE
(Note 1) 3.0 V V
Load Regulation R
LOAD
(Note 1) V
Thermal Regulation V
Ripple Rejection R
RTH
N
(Note 2) C
Adjustment Pin Current I
Adjustment Pin ³I
Current Change ³I
Miminum Load Current I
Current Limit I
Adj
(Line) 3.0V V
Adj
(Load) V
Adj
Lmin
CL
(Note 2) V
V
Œ= 3.0V, TA= 25°C -1.275 -1.225
DIFF
V
Œ= 3.0V • -1.30 -1.20 V
DIFF
V
Œ= 40V, TA= 25°C -1.275 -1.225
DIFF
V
Œ= 40V • -1.30 -1.20
DIFF
3.0 V V
V
DIFF
Œ= 12V, 8mA IL 1.5A, TA= 25°C -2 5 25 m V
DIFF
V
Œ= 40V, 8mA IL 200mA, TA= 25°C -2 5 25
DIFF
V
DIFF
Œ 40V, TA= 25°C -99
DIFF
Œ 40V • -23 23 m V
DIFF
Œ= 5.0V, 8mA IL 1.5A • -25 25
Œ= 40V, 8mA IL 100mA • -25 25
Vin= -14.6V, IL= 1.5A - 55mV
P
= 20 Watts, t = 10 ms, TA= 25°C
d
f = 120 Hz, V
Adj
V
DIFF
V
DIFF
Œ= 5V, 8mA IL 1.5A • -55µA
DIFF
V
Œ= 3.0V, V
DIFF
V
Œ= 10V, V
DIFF
Œ= 40V, V
V
DIFF
V
Œ= 40V, TA= 25°C 0.24 1. 2 A
DIFF
= V
out
ref
• 66 dB
= 10 µF
Œ= 3.0V • 100
Œ= 40V • 100 µA
Œ 40V • -55µA
DIFF
= -1.4V (forced) • 3.0
out
= -1.4V (forced) • 3.0 m A
out
= -1.4V (forced) • 5.0
out
Œ 5V • 1.5 3.5
DIFF
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
PIN CONNECTION
TO-257AA
3.3
123
Pin 1: Adjust
Pin 2: Input
Pin 3: Output
Tab: Isolated
Isolated
Loading...