TPS62200, TPS62201

TPS62202, TPS62203

TPS62204, TPS62205

SLVS417B – MARCH 2002 – REVISED OCTOBER 2002

HIGH-EFFICIENCY, SOT23

STEP-DOWN, DC-DC CONVERTER

1

www.ti.com

FEATURES

Converter With up to 95% Efficiency

Range Due to Power Save Mode

APPLICATIONS

VI

GND

EN

SW

FB

C1

4.7

µF

L1

10

µH

C2

10

µF

TPS62202

VI

2.5 V – 6 V

VO

1.8 V / 300 mA

Figure 1. Typical Application (Fixed Output

Voltage Version)

1

5

2

3

4

DESCRIPTION

The TPS6220x devices are a family of high-efficiency

synchronous step-down converters ideally suited for

portable systems powered by 1-cell Li-Ion or 3-cell

NiMH/NiCd batteries. The devices are also suitable to

operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6.0 V down to 0.7 V and

up to 300 mA output current, the devices are ideal to

power low voltage DSPs and processors used in PDAs,

pocket PCs, and smart phones. Under nominal load

current, the devices operate with a fixed switching

frequency of typically 1 MHz. At light load currents, the

part enters the power save mode operation; the

switching frequency is reduced and the quiescent

current is typically only 15

µA; therefore it achieves the

highest efficiency over the entire load current range.

The TPS6220x needs only three small external

components. Together with the tiny SOT23 package, a

minimum system solution size can be achieved. An

advanced fast response voltage mode control scheme

achieves superior line and load regulation with small

ceramic input and output capacitors.

40

45

50

55

60

65

70

75

80

85

90

95

100

0.010

0.100

1

10

100

1000

EFFICIENCY

vs

LOAD CURRENT

IL – Load Current – mA

VO = 1.8 V

VI = 2.7 V

VI = 3.7 V

VI = 5 V

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

 2002, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.