0.01

0.1

1

10

100

300

300

30

35

40

45

50

55

60

65

70

75

80

85

90

95

V

= 1.25V

OUT

GND

EN

FB

SW

TPS62244-Q1

2.2µH

4.7µF

10 µF

Up to 300mA

V

1.25V

OUT

V

2.0V to 6.0V

IN

ON

OFF

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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.

TPS62243-Q1, TPS62244-Q1

SLVSEK3 – MARCH 2018

TPS6224X-Q1 Automotive 2.25MHz 300mA Step-Down Converter in TSOT23 Package

1

1 Features

1

•

AEC-Q100 Qualified with following results:

–

Device Temperature Grade 1: -40°C to 125°C

Operating Junction Temeperature Range

•

Output Current Up to 300 mA

•

•

2.25-MHz Fixed-Frequency Operation in PWM

Mode

•

Power-Save Mode at Light Load Currents

•

Output Voltage Accuracy in PWM Mode ±1.5%

•

Fixed Output Voltages

–

1.80V TPS62243-Q1

–

1.25V TPS62244-Q1

•

15-μA Typical Quiescent Current

•

100% Duty Cycle for Lowest Dropout

•

Available in a TSOT 23 (5) 2.90-mm × 1.60-mm

Package

2 Applications

•

Remote Keyless Entry (RKE)

•

Passive Entry Passive Start (PEPS)

•

Advanced Driver Assistance Systems (ADAS)

–

Front Camera, Surround View, and Park Assist

3 Description

The

TPS6224x-Q1

devices

are

high-efficiency

synchronous DC/DC step-down converters providing

a fixed output voltage and up to 300 mA of output

current. They offer low power consumption for

battery-powered/always-on automotive applications

like Remote Keyless Entry (RKE) or Passive Entry

Passive Start (PEPS) key fobs and base stations.

With an input voltage range of 2 V to 6 V, the devices

support applications powered by Li-MnO2 coin cell

batteries, Li-Ion batteries, two- (2S) and three-cell

(3S) alkaline, 3.3-V and 5-V input voltage rails. The

TPS6224x-Q1 operate at a 2.25-MHz fixed switching

frequency at high load current and enters the power-

save mode operation at light load currents to maintain

high efficiency and low power consumption over the

entire load current range. The power-save mode is

optimized

for

low

output-voltage

ripple.

In

the

shutdown mode, the current consumption is reduced

to less than 1 μA. The TPS6224x-Q1 allow the use of

small inductors and capacitors to achieve a small

solution size, and is available in a 5-pin TSOT23

package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS6224X-Q1

TSOT (5)

2.90 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application Schematic

Efficiency vs Output Current