1 Features

• Ultra-low IQ: 250nA (typ), 400nA (max)

• Shutdown IQ: 3nA (typ)

• Excellent transient response (1mA to 50mA)

– < 10μs settling time

– 80mV undershoot

• Packages:

– 1.0mm × 1.0mm X2SON

– SOT23-5

• Input voltage range: 1.5V to 6.0V

• Output voltage range: 0.8V to 5.0V (fixed)

• Output accuracy: 1.5% over temperature

• Smart enable pulldown

• Very low dropout:

– 270mV (max) at 200mA (VOUT = 3.3V)

• Stable with a 1μF or larger capacitor

2 Applications

• Wearables electronics

• Thermostats, smoke and heat detectors

• Gas, heat, and water meters

• Blood glucose monitors and pulse oximeters

• Residential circuit breakers and fault indicators

• Building security and video surveillance devices

• EPOS card readers

3 Description

The TLV7A03 is an ultra-small, ultra-low quiescent

current low-dropout linear regulator (LDO) that

sources 200mA with excellent transient performance.

The TLV7A03, with an ultra-low IQ of 250nA, is

designed specifically for applications where very low

quiescent current is a critical parameter. This device

maintains low IQ consumption even in dropout mode

to further increase battery life. When in shutdown or

disabled mode, the device consumes only 3nA IQ,

which helps increase battery shelf life. The TLV7A03

has an output range of 0.8V to 5.0V, available in

50mV steps, to support the lower core voltages of

modern microcontrollers (MCUs).

The TLV7A03 features a smart enable circuit with an

internally controlled pulldown resistor that keeps the

LDO disabled even when the EN pin is floating. This

circuit also helps minimize the external components

used to pulldown the EN pin. This circuit also helps

minimize the current drawn through the external

pulldown circuit when the device is enabled.

The TLV7A03 is fully specified for TJ = –40°C to

+125°C operation.