SC1462

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

HIGH OUTPUT CURRENT

CHARGE PUMP DOUBLER

October 20, 2000

8

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

T ypical Iin vs Vin @ T a = 25 D eg. C .

000E+0

100E-6

200E-6

300E-6

400E-6

500E-6

600E-6

700E-6

1.0

2.0

3.0

4.0

5.0

6.0

Vin (V)

Io = 0mA

Typical Iin vs Ta @ Io = 0mA

000E+ 0

100E-6

200E-6

300E-6

400E-6

500E-6

600E-6

700E-6

800E-6

900E-6

-40

-20

0

20

40

60

80

T a (Deg. C.)

Vin = 5.5V

Vin = 4.5V

Vin = 3.6V

Vin = 2.5V

Vin = 1.5V

T ypical Dropou t Voltage vs Iou t

@T a = 25 Deg. C.

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

000E+0

20E-3

40E-3

60E-3

80E-3

100E-3

Iou t (A)

Vin = 1.5V

Vin = 2.5V

Vin = 3.6V

Vin = 4.5V

Vin = 5.5V

T ypical D ropou t Voltage vs T a

300E-3

350E-3

400E-3

450E-3

500E-3

550E-3

-40

-20

0

20406080

T a (Deg. C.)

Vin = 2.5V, Iout = 50mA

Vin = 3.6V, Iout = 60mA

T ypical Efficien cy vs Iou t

@T a = 25 Deg. C.

80%

84%

88%

92%

96%

100%

000E+ 0

20E-3

40E-3

60E-3

80E-3

100E-3

Iou t (A)

Vin = 5.5V

Vin = 4.5V

Vin = 3.6V

Vin = 2.5V

Vin = 1.5V

Vout Ripple

50mV/Div.

Vin = 3.6V

Iout = 60mA

Cin = Cout = Cbucket =3.3uF