5

© 2006 Semtech Corp.

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POWER MANAGEMENT

SC600

Pin#

Pin Name

Pin Function

1

VOUT

Output voltage regulated to 5.0V, 4.5V, or 4.0V.

2

CF1+

Positive terminal of bucket capacitor 1.

3

VIN

Input voltage ranging from 2.5V to 6.5V.

4

CD4

Bits select the charge pump operating frequency from 8kHz, 32kHz, 262kHz, and 650kHz.

Frequency selection is defined in Table 1 on page 9.

5

CX8

6

EN

Active high enable. Bias current is less than 1μA when set low.

7

CF2-

Negative terminal of bucket capacitor 2.

8

GND

Ground.

9

CF1-

Negative terminal of buck capacitor 1.

10

CF2+

Positive terminal of bucket capacitor 2.

Pin Descriptions

EN

CX8

CD4

GND

VIN

6

5

4

8

3

MODE

SELECT

DRIVERS

SWITCH

BLOCK

TIMER

COMPARATORS

VIN

VOUT

VREF

CX8

CD4

VIN

CF1+

CF1-

CF2+

CF2-

VOUT

2

9

10

7

1

EN

OSC

CLK/16

CLK/8

262kHz

650kHz

X

X

X

X

A

B

X

650kHz, 262kHz, 32kHz, or 8kHz

0

1

2

3

Block Diagram