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SP6682 Datasheet(PDF) 3 Page - Sipex Corporation

Part No. SP6682
Description  High Efficiency Charge Pump Regulator for White LEDs
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6682 Datasheet(HTML) 3 Page - Sipex Corporation

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Date: 5/5/04
SP6682 High Efficiency Charge Pump Regulator for White LEDs
© Copyright 2004 Sipex Corporation
VOUT
306m
EN/PW
1.25V
C2N
Start-up
and
Charge
Pump
Switches
VMODE
C2P
C1P
FB
Mode Control
GND
VIN
C1N
600 kHz
Clock
Manager
Voltage
Referenc
MODE
COMP
VOUT
COMP
FUNCTIONAL DIAGRAM
PIN DESCRIPTION
PIN NUMBER
PIN NAME
DESCRIPTION
1VOUT
Regulated charge pump output.
2
C1P
Positive terminal to the charge pump flying capacitor C2.
3VIN
Input pin for the 2.7V to 5.5V supply voltage.
4VMODE
Charge pump mode program pin. When VMODE is greater than 1.25V,
X1.5 charge pump is used. Otherwise, charge pump switches to X2
mode. A voltage divider shown in typical application circuit programs
the VIN threshold for charge pump mode switching.
5FB
This is the feedback pin for output current or voltage regulation. The
voltage of this pin is compared with an internal 306mV reference.
6
EN/PWM
Enable and PWM dimming control input. Pull this pin low to discon-
nect VOUT from VIN and shutdown the SP6682.
7
C2N
Negative terminal to the charge pump flying capacitor, C4.
8
GND
Ground reference.
9
C1N
Negative terminal to the charge pump flying capacitor, C2.
10
C2P
Positive terminal to the charge pump flying capacitor C4.


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