10µ

100µ

1m

10m

100m

1

0

10

20

30

40

50

60

70

80

90

100

Load current [A]

Vin=2.7V

Vin=3.6V

Vin=5.5V

C001

V

OUT=1. 8V

V

IN=3.6V

V

IN=5.5V

V

IN=2.7V

TLV62565

2.7 V to 5.5 V

V

IN

FB

VIN

GND

EN

SW

C2

10 µF

V

OUT

1.8 V

L1

2.2 µH

C1

4.7 µF

R1

240 k

R2

120 k

Copyright © 2016, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TLV62565, TLV62566

SLVSBC1D – OCTOBER 2013 – REVISED OCTOBER 2016

TLV6256x 1.5-A High Efficiency Step-Down Converters in SOT-23 5-Pin Package

1

1 Features

1

•

2.7-V to 5.5-V Input Voltage Range

•

1.5-MHz Typical Switching Frequency

•

Output Current up to 1.5 A (Max)

•

Adaptive On-Time Current Control

•

Power Save Mode for Light Load Efficiency

•

50-µA Operating Quiescent Current

•

Up to 95% Efficiency

•

Over Current Protection

•

95% Maximum Duty Cycle

•

Excellent AC and Transient Load Response

•

Power Good Output, TLV62566

•

Internal Soft Startup of 250 µs (Typ)

•

Adjustable Output Voltage

•

Thermal Shutdown Protection

•

Available in SOT-23 5-Pin Package

2 Applications

•

Portable Devices

•

DSL Modems

•

Hard Disk Drivers

•

Set Top Box

•

Tablet

3 Description

The TLV62565/6 devices are synchronous step-down

converters optimized for small solution size and high

efficiency. The devices integrate switches capable of

delivering an output current up to 1.5 A.

The devices are based on an adaptive on time with

valley

current

mode

control

scheme.

Typical

operating frequency is 1.5 MHz at medium to heavy

loads. The devices are optimized to achieve very low

output

voltage

ripple

even

with

small

external

components and feature an excellent load transient

response.

During light load, the TLV62565/6 automatically enter

into Power Save Mode at the lowest quiescent

current (50 μA typ) to maintain high efficiency over

the entire load current range. In shutdown, the

current consumption is reduced to less than 1 μA.

The TLV62565/6 provide an adjustable output voltage

via an external resistor divider. The output voltage

start-up ramp is controlled by an internal soft start,

typically 250 µs. Power sequencing is possible by

configuring the Enable (TLV62565) and Power Good

(TLV62566) pins. Other features like over current

protection and over temperature protection are built-

in. The TLV62565/6 devices are available in a SOT-

23 5-pin package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TLV62565

TLV62566

SOT-23 (5)

2.90 mm × 2.80 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

4 Simplified Schematic

Efficiency vs Load Current