SC600
POWER MANAGEMENT
Pin Descriptions
Pin#
1
2
3
4
5
6
7
8
9
10
Pin Name
VOUT
CF1+
VIN
CD4
CX8
EN
CF2-
GND
CF1-
CF2+
Pin Function
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.
Bits select the charge pump operating frequency from 8kHz, 32kHz, 262kHz, and 650kHz.
Frequency selection is de ? ned in Table 1 on page 9.
Active high enable. Bias current is less than 1 μ A when set low.
Negative terminal of bucket capacitor 2.
Ground.
Negative terminal of buck capacitor 1.
Positive terminal of bucket capacitor 2.
Block Diagram
VIN
3
SWITCH
BLOCK
1
VOUT
EN
6
CLK/16
X 0
X
650kHz, 262kHz, 32kHz, or 8kHz
MODE
SELECT
DRIVERS
2
CF1+
CX8
CD4
5
4
EN
OSC
CLK/8
262kHz
650kHz
X 1
X 2
X 3
A
B
VIN
VOUT
VREF
COMPARATORS
9
10
CF1-
CF2+
7
CF2-
GND
8
CX8
CD4
VIN
TIMER
? 2006 Semtech Corp.
5
www.semtech.com
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