Output Current (A)

0.001

0.01

0.1

1

0

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

D001

Vout = 1.05 V

Vout = 1.5 V

Vout = 3.3 V

Vout = 5 V

TPS561201

VIN

VBST

SW

GND

EN

VFB

1

2

3

4

5

6

VOUT

VOUT

EN

VIN

COUT

CIN

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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.

TPS561201, TPS561208

SLVSC95 – APRIL 2017

TPS56120x 4.5-V to 17-V Input, 1-A Synchronous Step-Down Voltage Regulator in 6-Pin

SOT-23

1

1 Features

1

•

TPS561201 and TPS561208 1-A Converter

Integrated 140-mΩ and 84-mΩ FETs

•

D-CAP2™ Mode Control With Fast Transient

Response

•

Input Voltage Range: 4.5 V to 17 V

•

Output Voltage Range: 0.76 V to 7 V

•

Pulse-Skip Mode (TPS561201) or Continuous

Current Mode (TPS561208)

•

580-kHz Switching Frequency

•

Low Shutdown Current Less than 10 µA

•

2% Feedback Voltage Accuracy (25°C)

•

Startup from Pre-Biased Output Voltage

•

Cycle-by-Cycle Overcurrent Limit

•

Hiccup-Mode Overcurrent Protection

•

Non-Latch UVP and TSD Protections

•

Fixed Soft-Start: 1.0 ms

•

Create a Custom Design Using the TPS56120x

With the WEBENCH® Power Designer

2 Applications

•

Digital TV Power Supply

•

High Definition Blu-ray™ Disc Players

•

Networking Home Terminal

•

Digital Set-Top Box (STB)

•

Surveillance

3 Description

The TPS561201 and TPS561208 are simple, easy-to-

use, 1-A synchronous step-down converters in SOT-

23 package.

The devices are optimized to operate with minimum

external component counts and also optimized to

achieve low standby current.

These switch mode power supply (SMPS) devices

employ D-CAP2 mode control providing a fast

transient

response

and

supporting

both

low

equivalent series resistance (ESR) output capacitors

such as specialty polymer and ultra-low ESR ceramic

capacitors

with

no

external

compensation

components.

The TPS561201 operates in pulse skip mode, which

maintains high efficiency during light load operation.

The TPS561201 and TPS561208 are available in a 6-

pin 1.6 × 2.9 (mm) SOT (DDC) package and

specified

from

–40°C

to

125°C

of

junction

temperature.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS561201

TPS561208

SOT (6)

1.60 mm × 2.90 mm

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

the end of the data sheet.

Simplified Schematic

TPS561201 Efficiency