TPS60500, TPS60501

TPS60502, TPS60503

SLVS391B − OCTOBER 2001 − REVISED FEBRUARY 2002

HIGH EFFICIENCY, 250mA

STEPDOWN CHARGE PUMP

1

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FEATURES

Output Voltage

and Temperature Variation

(Power Good)

APPLICATIONS

DESCRIPTION

The TPS6050x devices are a family of step-down

charge pumps that generate a regulated, fixed 3.3-V,

1.8-V, 1.5-V, or adjustable output voltage. Only four

small ceramic capacitors are required to build a

complete high efficiency dc/dc charge pump converter.

To achieve the high efficiency over a wide input voltage

range, the charge pump automatically selects between

three different conversion modes. The output can

deliver a maximum of 250-mA output current. The

power good function supervises the output voltage and

goes high when the output voltage rises to 97% of its

nominal value.

C1F

1

µF

86

C1F− C1F+

C2F

1

µF

34

C2F− C2F+

7

OUT

10

FB

+ Co

10

µF

1.8 V

150 mA

2

PG

R

5

VIN

1

EN

GND

9

OFF/ON

Ci

2.2

µF

Li-ion cell

INPUT

TPS60502

Typical Application Circuit

0

10

20

30

40

50

60

70

80

90

2

2.5

3

3.5

4

4.5

5

5.5

6

6.5

100

VI − Input Voltage − V

TPS60503

EFFICIENCY

vs

INPUT VOLTAGE

100 mA

150 mA

50 mA

LDO

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.