HPL1117-25GC-TUL View Datasheet(PDF) - Unspecified

Part Name

Description

MFG CO.

HPL1117-25GC-TUL

1A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 1.8V, 2.5V, 2.85V, 3.3V and 5V

Unspecified 

HPL1117

Block Diagram

V IN

VOUT

T herm al

Protection

Current

Lim it

Voltage

Regulation

ADJ/GND

Application Circuits

1.25V to 10.7V Adjustable Regulator

Improving Ripple Rejection

HPL1117

VIN

IN

OUT

ADJ

R1

121Ω

+ 10µ F

C1*

R2

1k

VOUT1

+ 100µ F

C2

* Needed if device is far from filter capacitors

VOUT

=

1.250V

X

R1 + R2

R1

VIN

+

10µF

HPL1117

IN OUT

ADJ

R2

365Ω

1%

R1

121Ω

1%

+ C1

10µF

VOUT

150µF

* C1 improves ripple rejection.

XC should be approximately

equal to R1 at ripple frequency

 Copyright HIPAC Semiconductor, Inc.

5

Rev. B.13 - Mar., 2004

www.hipacsemi.com

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