Datasheet

10 µF
(see Note C)
100 µF
(see Note A)
R1
R2
INPUT OUTPUT
ADJ/GND
TLV1117 − ADJ
V
O
V
I
C
ADJ
(see Note B)
1N4002 (See Note D)
I
ADJ
V
REF
Because I
ADJ
typically is 55 µA, it is negligible in most applications.
V
OUT
+ V
REF
ǒ
1 )
R2
R1
Ǔ
) (I
ADJ
R2)
V
OUT
is calculated as:
TLV1117
www.ti.com SLVS561K –DECEMBER 2004–REVISED APRIL 2013
APPLICATION INFORMATION
A. Output capacitor selection is critical for regulator stability. Larger C
OUT
values benefit the regulator by improving
transient response and loop stability.
B. C
ADJ
can be used to improve ripple rejection. If C
ADJ
is used, a C
OUT
that is larger in value than C
ADJ
must be used.
C. C
IN
is recommended if TLV1117 is not located near the power-supply filter.
D. An external diode is recommended to protect the regulator if the input instantaneously is shorted to GND.
E. This device is designed to be stable with tantalum and aluminum electrolytic output capacitors having an ESR
between 0.2 Ω and 10 Ω.
Figure 1. Basic Adjustable Regulator
Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Links: TLV1117