TPS7A02 Nanopower IQ, 25-nA, 200-mA, Low-Dropout Voltage Regulator With Fast

Transient Response

1 Features

• Ultra-low IQ: 25 nA (typ), even in dropout

• Shutdown IQ: 3 nA (typ)

• Excellent transient response (1 mA to 50 mA)

– < 10-µs settling time

– 100-mV undershoot

• Packages:

– 1.0-mm × 1.0-mm X2SON

– SOT23-5

– 0.64-mm × 0.64-mm DSBGA

• Input voltage range: 1.5 V to 6.0 V

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

• Output accuracy: 1.5% over temperature

• Smart enable pulldown

• Very low dropout:

– 270 mV (max) at 200 mA (VOUT = 3.3 V)

• Stable with a 1-µF 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 TPS7A02 is an ultra-small, ultra-low quiescent

current low-dropout linear regulator (LDO) that can

source 200 mA with excellent transient performance.

The TPS7A02, with an ultra-low IQ of 25 nA, 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 ultra-low,

3-nA IQ that helps increase the shelf life of the battery.

The TPS7A02 has an output range of 0.8 V to 5.0

V available in 50-mV steps to support the lower core

voltages of modern microcontrollers (MCUs).

The TPS7A02 features a smart enable circuit with an

internally controlled pulldown resistor that keeps the

LDO disabled even when the EN pin is left floating

and 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 TPS7A02 is fully specified for TJ = –40°C to

+125°C operation.

Package Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS7A02

DQN (X2SON, 4)

1.00 mm × 1.00 mm

YCH (DSBGA, 4)

0.64 mm × 0.64 mm

DBV (SOT-23, 5)

2.90 mm × 1.60 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

Time (µs)

-200 -100

0

100

200

300

400

500

600

700

800

-200

-350

-150

-300

-100

-250

-50

-200

0

-150

50

-100

100

-50

150

0

200

50

250

100

300

150

350

200

400

250

VOUT

IOUT

Load Transient Response (VIN = VOUT + 1 V, COUT =

1 µF, IOUT = 1 mA to 50 mA in 1 µs)

Output Current (mA)

84

86

88

90

92

94

96

98

100

102

0.001

0.01

0.1

1

10

100

Curr

TJ

-55°C

-40°C

0°C

25°C

85°C

125°C

140°C

Ground Current Efficiency vs Output Current

TPS7A02

SBVS277C – JULY 2019 – REVISED SEPTEMBER 2022

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.