Datasheet

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APPLICATION INFORMATION
C1
+
C2
R1
R2
+
INPUT OUTPUT
ADJUSTMENT
LM237
or
LM337
V
O
V
I
C1 is a 1-µF solid tantalum capacitor required only if the regulator is more than 10 cm (4 in) from the power-supply filter capacitor.
C2 is a 1-µF solid tantalum or 10-µF aluminum electrolytic capacitor required for stability.
R2 + R1ǒ
–V
O
–1..25
* 1Ǔ
R1 typically is 120 Ω.
, where V
O
is the output in volts.
ADJUSTMENT
OUTPUTINPUT
V
I
R
S
V
O
LM237
or
LM337
R
S
=
1.25 V
I
LIMIT
LM237 , LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047K – NOVEMBER 1981 – REVISED NOVEMBER 2007
Figure 1. Adjustable Negative-Voltage Regulator
Figure 2. Current-Limiting Circuit
Copyright © 1981 – 2007, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): LM237 LM337