SP6682EU Sipex Corporation, SP6682EU Datasheet
SP6682EU
Manufacturer Part Number
SP6682EU
Description
Manufacturer
Sipex Corporation
Specifications of SP6682EU
Date_code
03
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FEATURES
■ Ideal For White LED Driver
■ Low Profile, Inductorless Regulator
■ X1.5 and X2 Modes for Highest Efficiency
■ +2.7V to +5.5V Input Voltage Range
■ Fast Turn-On Time, 175µS
■ 1mA Quiescent Current
■ <1.5µA Shutdown Current
■ Built-in 600kHz Oscillator
■ Programmable Output Current or Voltage
■ PWM Dimming Control with Enable Pin
■ Shutdown to Disconnect Output from Input
■ Soft Start to Eliminate In-Rush Current
■ Industry Standard 10-pin MSOP Package
The SP6682 is a current regulated charge pump ideal for converting a Li-Ion battery input for
driving white LED used in backlighting color displays. The charge pump automatically switches
between X1.5 and X2 modes based on the input voltage, providing improved efficiency over
traditional methods using charge pump doubler followed by LDO. This input voltage threshold
can be externally programmed for optimized efficiency at specific output voltages and currents.
The SP6682 operates with an internal 600kHz clock, enabling the use of small external
components. Output current or voltage can be accurately regulated by modulating the switcher
between the charge pump and output capacitor. In shutdown mode, the IC disconnects the output
from the input and draws less than 1.5µA current. The SP6682 is offered in a 10-pin MSOP
package, and a small 10-Pin DFN Package.
Date: 5/5/04
and Small 10-pin DFN Package
Lithium-Ion
ENABLE/PWM DIMMING
2.7 - 4.2V
®
C2
2.2µF
C1
2.2µF
SP6682 High Efficiency Charge Pump Regulator for White LEDs
High Efficiency Charge Pump Regulator
R3
1M
R2
R1
C3
0.1µF
1
2
3
4
5
V
C1P
V
V
FB
OUT
IN
MODE
SP6682
EN/PWM
1
®
GND
C1N
C2N
C2P
10
9
8
7
6
APPLICATIONS
■ Next Generation Mobile Phones
■ PDAs
■ 3.3V to 5.0V Conversion
■ Digital Still Cameras
■ Digital Camcorders
■ Palmtop Computers
■ Color LCD Modules
Now Available in Lead Free Packaging
TYPICAL APPLICATION SCHEMATIC
V
MODE
V OUT
C1P
V IN
FB
C4
2.2µF C5
1
2
3
4
5
2.2µF
C6
0.1µF
SP6682
10 Pin DFN
for White LEDs
R6
20
© Copyright 2004 Sipex Corporation
20
SP6682
20
DESCRIPTION
10
9
8
7
6
20
C2P
C1N
GND
C2N
EN/PWM
White
LED
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