Load (A)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

60

65

70

75

80

85

90

95

100

D008

R1

200 k

R2

100 k

SW

GND FB

EN

PG

VIN

C3*

C2

10 µF

R3

499 k

C1

4.7 µF

2.5 V to 5.5 V

1.8 V / 1.0 A

L1

2.2 µH

C3: Optional

TLV62568P

Copyright Ú 2016, Texas Instruments Incorporated

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

TLV62568, TLV62568P

SLVSD89 – NOVEMBER 2016

TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package

1

1 Features

1

•

Up to 95% Efficiency

•

•

2.5-V to 5.5-V Input Voltage Range

•

•

Power Save Mode for Light Load Efficiency

•

100% Duty Cycle for Lowest Dropout

•

35-µA Operating Quiescent Current

•

1.5-MHz Switching Frequency

•

Power Good Output

•

Over Current Protection

•

Internal Soft Startup

•

Thermal Shutdown Protection

•

Available in SOT Package

•

Pin-to-Pin Compatible with TLV62569

2 Applications

•

General Purpose POL Supply

•

Network Video Camera

•

Set Top Box

•

Wireless Router

3 Description

The TLV62568 device is a synchronous step-down

buck DC-DC converter optimized for high efficiency

and compact solution size. The device integrates

switches capable of delivering an output current up to

1 A.

At medium to heavy loads, the device operates in

pulse width modulation (PWM) mode with 1.5-MHz

switching

frequency.

At

light

load,

the

device

automatically enters Power Save Mode (PSM) to

maintain high efficiency over the entire load current

range. In shutdown, the current consumption is

reduced to less than 2 μA.

The TLV62568 provides an adjustable output voltage

via an external resistor divider. An internal soft start

circuit limits the inrush current during startup. Other

features

like

over

current

protection,

thermal

shutdown protection and power good are built-in. The

device is available in a SOT23 and SOT563 package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TLV62568

SOT-23 (5)

2.90 mm × 2.80 mm

TLV62568P

SOT-23 (6)

TLV62568

SOT563 (6)

1.60 mm x 1.60 mm

TLV62568P

SOT563 (6)

(1) For all available packages, see Mechanical, Packaging, and

Orderable Information at the end of the datasheet.

Simplified Schematic

Efficiency at 5-V Input Voltage