VIN

EN

FB

TPS62120

PG

L 22 H

m

SW

GND

SGND

VOUT

PWRGOOD

V

=2.5Vto15V

IN

C

4.7 F

IN

m

R

300k

1

W

R

240k

2

W

Cff

22pF

V

=1.8V

upto75mA

OUT

C

4.7 F

OUT

m

0.1

1

10

100

I -OutputCurrent-mA

O

30

40

50

60

70

80

90

100

V

=5.5V

IN

V

=8V

IN

V

=10V

IN

V

=12V

IN

V

=15V

IN

V =5V,

L =18 H,

LPS3015,

C =4.7 F

O

O

m

m

TPS62120

TPS62122

www.ti.com

SLVSAD5 – JULY 2010

15V, 75mA High Efficient Buck Converter

Check for Samples: TPS62120 , TPS62122

1

FEATURES

DESCRIPTION

•

Wide Input Voltage Range 2V to 15V

•

Up to 96% Efficiency

The TPS6212X device family is a high efficient

synchronous step down DC-DC converter optimized

•

Power Save Mode with 11 µA Quiescent

for low power applications. It supports up to 75mA

Current

output current and allows the use of tiny external

•

Output Current 75mA

inductors and capacitors.

•

Output Voltage Range 1.2V to 5.5V

The wide operating input voltage range of 2V to 15V

•

Up to 800kHz Switch Frequency

supports energy harvesting, battery powered and as

well 9V or 12V line powered applications.

•

Synchronous Converter, no External Rectifier

•

Low Output Ripple Voltage

With its advanced hysteretic control scheme the

converter provides power save mode operation. At

•

100% Duty Cycle for Lowest Dropout

light loads the converter operates in PFM mode

•

Small SOT 8 pin (TPS62120) and 2x2 SON 6

(pulse

frequency

modulation)

and

transitions

pin (TPS62122) Package

automatically in PWM (pulse width modulation) mode

•

Internal Soft Start

at higher load currents. The Power Save Mode

maintains high efficiency over the entire load current

•

Power Good Open Drain Output TPS62120

range. The hysteretic control scheme is optimized for

•

Open Drain Output for Output Discharge

low output ripple voltage in PFM mode in order to

TPS62120

reduce output noise to a minimum. It consumes only

•

2.5V Rising / 1.85V Falling UVLO Thresholds

10uA quiescent current from VIN in PFM mode

operation.

APPLICATIONS

In shutdown mode, the device is turned off.

•

Low Power RF Applications

An open drain power good output is available in the

•

Ultra Low Power Microprocessor

TPS62120 and indicates once the output voltage is in

•

Energy Harvesting

regulation.

•

Industrial Measuring

TPS62120 has an additional SGND pin which is

connected to GND during shutdown mode. This

output can be used to discharge the output capacitor.

pin SON package.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.