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

Output Current (mA)

84

86

88

90

92

94

96

98

100

102

0.001

0.01

0.1

1

10

100

Curr

-55°C

-40°C

0°C

25°C

85°C

125°C

140°C

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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.

TPS7A02

SBVS277B – JULY 2019 – REVISED MARCH 2020

Transient Response

1

1 Features

1

•

•

•

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 x 0.64-mm DSBGA (preview)

•

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:

–

•

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.

designed specifically for applications where very-low

quiescent current is a critical parameter. This device

to further increase the battery life. When in shutdown

or disabled mode, the device consumes ultra-low,

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.

+125°C operation.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS7A02

X2SON (4)

1.00 mm × 1.00 mm

DSBGA (4)(2)

0.64 mm × 0.64 mm

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.

(2) Preview package.

Load Transient Response

Ground Current Efficiency vs Output Current