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DESCRIPTION

TPS61100, TPS61103

TPS61106, TPS61107

SLVS411B – JUNE 2002 – REVISED APRIL 2004

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.

The TPS6110x devices provide a complete power supply solution for products powered by either one or two

Alkaline, NiCd, or NiMH battery cells. The converter generates two stable output voltages that are either adjusted

by an external resistor divider or fixed internally on the chip. It stays in operation with supply voltages down to

0.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller

using a synchronous rectifier to obtain maximum efficiency.

The maximum peak current in the boost switch is limited to a value of 1800 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected

from the battery. An auto discharge function allows discharging the output capacitors during shutdown mode.

This is especially useful in microcontroller applications where the microcontroller or microprocessor should not

remain active due to the stored voltage on the output capacitors. Programming the ADEN-pin disables this

feature. A low-EMI mode is implemented to reduce ringing and in effect lower radiated electromagnetic energy

when the converter enters the discontinuous conduction mode. A power good output at the boost stage provides

additional control of cascaded power supply components.

The built-in LDO can be used for a second output voltage derived either from the boost output or directly from

the battery. The output voltage of this LDO can be programmed by an external resistor divider or is fixed

internally on the chip. The LDO can be enabled separately i.e., using the power good of the boost stage.

The device is packaged in a 20-pin TSSOP (20 PW) package or in a 24-pin QFN (24 RGE) package.

AVAILABLE PACKAGE OPTIONS

PACKAGE

CODE

20-Pin TSSOP

PW

24-Pin QFN

RGE

AVAILABLE OUTPUT VOLTAGE OPTIONS

OUTPUT

OUTPUT

VOLTAGE

VOLTAGE

DC/DC

LDO

Adjustable

Adjustable

TPS61100PW

TPS61100RGE

3.3 V

Adjustable

TPS61103PW

TPS61103RGE

40

°C to 85°C

3.3 V

1.5 V

TPS61106PW

TPS61106RGE

3.3 V

1.8 V

TPS61107PW

TPS61107RGE

(1)

The PW package is available taped and reeled. Add R suffix to device type (e.g., TPS61100PWR) to

order quantities of 2000 devices per reel. The RGE package is only available in reels. Add R suffix to

device type (e.g. TPS61100RGER) to order quantities of 3000 devices per reel.

2

Not Recommended for New Designs