3-Terminal 1.5A Negative Adjustable Regulator Output current exce

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3-Terminal 1.5A Negative Adjustable Regulator Output current exce

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LM337
3-Terminal 1.5A Negative Adjustable Regulator
Output current excess 1.5A Output voltage adjustable between -1.2V Internal thermal overload protection Internal short circuit current limiting Output transistor safe area compensation Floating operation high voltage applications Standard 3-pin TO-220 package
Description
LM337 3-terminal negative adjustable regulator. supplies excess 1.5A over output voltage range -1.2V 37V. This regulator requires only external resistor output voltage. Included chip current limiting, thermal overload protection safe area compensation.
TO-220
Input Output
Internal Block Diagram
Vadj
Output
Voltage Reference
Protection Circuitry
Input
Rev. 1.0.0
©2001 Fairchild Semiconductor Corporation
LM337
Absolute Maximum Ratings
Parameter Input-Output Voltage Differential Power Dissipation Operating Temperature Range Storage Temperature Range Symbol TOPR TSTG Value Internally limited +125 ~+125 Unit
Electrical Characteristics
40mA, +125°C, PDMAX 20W, unless otherwise specified) Parameter Symbol Conditions +25°C +25°C 10mA 0.5A 10mA 1.5A Adjustable Current Adjustable Current Change IADJ IADJ 25°C 10mA 1.5A 25°C Reference Voltage Temperature Stability Minimum Load Current Maintain Regulation Output Noise Ripple Rejection Ratio Long Term Stability Thermal Resistance Junction Case VREF IL(MIN) 10mA 1.5A +125°C =+25°C 10Hz 10KHz -10V, 120Hz CADJ 10µF (Note2) 125°C ,1000Hours -1.213 -1.200 Typ. 0.01 0.02 -1.250 -1.250 0.003 Max. 0.04 0.07 -1.287 -1.300 V/106 Unit
Line Regulation (Note1)
Rline
Load Regulation (Note1)
Rload
Note: Load line regulation specified constant junction temperature. Change heating effects must taken into account separately. Pulse testing with duty used. CADJ, when used, connected detween adjustment ground.
LM337
Typical Application
IPROG Iadj
Vadj
KA337 LM337
Figure Programmable Regulator
required regulator located more then inches from power supply filter. 1.0µF solid tantalum 10µF aluminum electrolytic recommended. necessary stability. 1.0µF solid tantalum 10µF aluminum electrolytic recommended. -1.25V (1+R2/R1)
LM337
Mechanical Dimensions
Package
TO-220
9.90 ±0.20 4.50 ±0.20
1.30 ±0.10
2.80 ±0.10
(8.70) ±0.10
(1.70)
1.30 -0.05
+0.10
9.20 ±0.20
(1.46)
13.08 ±0.20
(1.00)
(3.00)
15.90 ±0.20
1.27 ±0.10
1.52 ±0.10
0.80 ±0.10 2.54TYP [2.54 ±0.20] 2.54TYP [2.54 ±0.20]
10.08 ±0.30
18.95MAX.
(3.70)
(45°
0.50 -0.05
+0.10
2.40 ±0.20
10.00 ±0.20
LM337
Ordering Information
Product Number LM337T Package TO-220 Operating Temperature 125°C
LM337
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES RIGHT MAKE CHANGES WITHOUT FURTHER NOTICE PRODUCTS HEREIN IMPROVE RELIABILITY, FUNCTION DESIGN. FAIRCHILD DOES ASSUME LIABILITY ARISING APPLICATION PRODUCT CIRCUIT DESCRIBED HEREIN; NEITHER DOES CONVEY LICENSE UNDER PATENT RIGHTS, RIGHTS OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT FAIRCHILD SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury user.
www.fairchildsemi.com 6/1/01 0.0m Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation
critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness.

3-Terminal 1.5A Negative Adjustable Regulator Output current exce

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