TK71652 View Datasheet(PDF) - Toko America Inc

Part Name

Description

Manufacturer

TK71652

LOW DROPOUT VOLTAGE REGULATOR

Toko America Inc  

TK716xx

APPLICATION INFORMATION (CONT.)

The value of ESR between ceramic and tantalum capacitors differs by about two orders of magnitude as illustrated below.

The characteristics of tantalum capacitors also vary widely according to manufacturer. The output capacitor becomes

a part of the phase compensation in a LDO regulator using a PNP pass transistor. Because of this, it is necessary to

optimize the phase compensation in the IC for use with ceramic or tantalum capacitors.

ESR vs. TEMPERATURE

at 100 kHZ

10

BOARD LAYOUT

1

Tantalum Cap

Ceramic Cap

0.1

0.01

-20 0

50 60

TEMPERATURE (°C)

GND

VIN

VOUT

+

+

Page 16

CONTROL

NOISE

BYPASS

SOT23-5 BOARD LAYOUT

December 1999 TOKO, Inc.

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