TPS62736

TPS62737

SLVSBO4B – OCTOBER 2012 – REVISED JULY 2013

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

DESCRIPTION

The TPS6273X family provides a highly integrated ultra low power buck converter solution that is well suited for

meeting the special needs of ultra low power applications such as energy harvesting. The TPS6273X provides

the system with an externally programmable regulated supply in order to preserve the overall efficiency of the

power management stage compared to a linear step down converter. This regulator is intended to step down the

voltage from an energy storage element such as a battery or super capacitor in order to supply the rail to low

voltage electronics. The regulated output has been optimized to provide high efficiency across low output

currents (<10 µA) to high currents (200 mA).

The TPS6273X integrates an optimized hysteretic controller for low power applications. The internal circuitry

utilizes a time based sampling system in order to reduce the average quiescent current.

To further assist users in the strict management of their energy budgets, the TPS6273X toggles the input power

good indicator to signal an attached microprocessor when the voltage on the input supply has dropped below a

pre-set critical level. This signal is intended to trigger the reduction of load currents to prevent the system from

entering an under-voltage condition. There are also independent enable signals to allow the system to control

whether the converter is regulating the output, only monitoring the input voltage, or shut down in an ultra-low

quiescent sleep state.

The input power good threshold and output regulator levels are programmed independently via external resistors.

All the capabilities of TPS6273X are packed into a small foot-print 14-lead 3.5mm x 3.5 mm QFN package

(RGY).

ORDERING INFORMATION

ORDERING

OUTPUT

MAX OUTPUT

INPUT

PACKAGE

PART NO.

NUMBER (TAPE

QUANTITY

VOLTAGE

CURRENT

UVLO

MARKING

AND REEL)

TPS62736RGYR

3000

Resistor

–40°C to 85°C

50 mA

2 V

TPS62736

Programmable

TPS62736RGYT

250

TPS62737RGYR

3000

Resistor

–20°C to 85°C

200 mA

2V

TPS62737

Programmable

TPS62737RGYT

250

(1)

The RGY package is available in tape on reel. Add R suffix to order quantities of 3000 parts per reel, T suffix for 250 parts per reel.

ABSOLUTE MAXIMUM RATINGS

(1)

over operating free-air temperature range (unless otherwise noted)

UNIT

MIN

MAX

Input voltage range on IN, EN1, EN2, VRDIV, VIN_OK_SET,

Pin voltage

–0.3

5.5

V

VOUT_SET, VIN_OK, OUT, SW,NC

TPS62736

Peak currents

IN, OUT

100

mA

TPS62737

Peak currents

IN, OUT

370

mA

Temperature range

Operating junction temperature range

–40

125

°C

Storage temperature range

–65

150

°C

Human Body Model - (HBM)

1

kV

Machine Model (MM)

150

V

Charge Device Model - (CDM)

500

V

(1)

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings

only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating

conditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.

(2)

All voltage values are with respect to VSS/ground terminal

(3)

ESD testing is performed according to the respective JESD22 JEDEC standard.

2

Submit Documentation Feedback

Copyright © 2012–2013, Texas Instruments Incorporated

Product Folder Links: TPS62736 TPS62737