SC600
POWER MANAGEMENT
Pin Descriptions
Pin#
1
Pin Name Pin Function
VOUT
CF1+
VIN
Output voltage regulated to 5.0V, 4.5V, or 4.0V.
Positive terminal of bucket capacitor 1.
Input voltage ranging from 2.5V to 6.5V.
2
3
4
CD4
CX8
EN
Bits select the charge pump operating frequency from 8kHz, 32kHz, 262kHz, and 650kHz.
Frequency selection is defined in Table 1 on page 9.
5
6
Active high enable. Bias current is less than 1μA when set low.
Negative terminal of bucket capacitor 2.
Ground.
7
CF2-
GND
CF1-
CF2+
8
9
Negative terminal of buck capacitor 1.
Positive terminal of bucket capacitor 2.
10
Block Diagram
VIN
EN
3
6
SWITCH
BLOCK
1
VOUT
DRIVERS
650kHz, 262kHz, 32kHz, or 8kHz
COMPARATORS
MODE
SELECT
X
CLK/16
CLK/8
X0
X1
CF1+
CF1-
2
9
CX8
5
EN
OSC
262kHz
650kHz
VIN
X2
X
VOUT
VREF
10
7
CF2+
CF2-
3 A
B
CD4
GND
4
8
TIMER
CX8
CD4
VIN
© 2006 Semtech Corp.
5
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