Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

Copyright

© 2000

Rev. 1.0e, 2005-03-03

LX1882

Charge Pump Doubler with Linear Regulator

I N T E GRA T ED

PR ODUC T S

ELECTRI CAL CHA RACTERI S TI CS

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C

LX1882-xx

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Operating Voltage

LX1882-00

LX1882-33

1.8

2.0

4.4

4.4

V

SHDN =0V

1

5

µA

250

400

µA

FB Input Current

FB=1.175V

-50

50

nA

FB Voltage

1.15

1.175

1.20

V

Regulated Output Voltage

3.23

3.30

3.37

V

±150

ppm

Charge Pump Oscillator Frequency

480

550

620

kHz

22

30

Ω

16

20

Ω

CPO (Charge Pump Output) Output

Resistance

10

20

Ω

∆V

100

75

160

120

mV

350

µS

)

17

30

mV

3

10

mV

40

mV

SHDN =0V, Resistance Measured to GND,

120

350

Ω

SHDN =0V, Resistance Measured to GND,

50

150

Ω

SHDN Input Threshold

0.4

1

1.6

V

-1

1

µA

SHDN Input Current

SHDN =0V

-1

1

µA

Note 1: Dropout voltage is defined as the minimum input to output differential required to maintain regulation.