SP6651AEU Sipex Corporation, SP6651AEU Datasheet
SP6651AEU
Manufacturer Part Number
SP6651AEU
Description
Manufacturer
Sipex Corporation
Specifications of SP6651AEU
Case
MSOP-10
Date_code
03
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FEATURES
Date: 5/25/04
The SP6651A is a 800mA synchronous buck regulator which is ideal for portable applications that
use a Li-Ion or 3 cell alkaline/NiCD/NiMH input. The SP6651A’s proprietary control loop, 20µA
light load quiescent current, and 0.3Ω power switches provide excellent efficiency across a wide
range of output currents. As the input battery supply decreases towards the output voltage the
SP6651A seamlessly transitions into 100% duty ratio operation further extending useful battery
life. The SP6651A is protected against overload and short circuit conditions with a precise
inductor peak current limit. Other features include programmable under voltage lockout and low
battery detection, externally programmed output voltage down to 1.0V, logic level shutdown
control, and 140°C over temperature shutdown.
DFN Package (3mm x 3mm)
Ultra-low 20µA Quiescent Current
98% Efficiency Possible
800mA Output Current
2.7V to 5.5V Input Voltage Range
Output Adjustable Down to 1.0V
No External FET’s Required
1.25A Inductor Peak Current Limit
100% Duty Ratio Low Dropout Operation
80µA Light Load Quiescent Current
in Dropout
Over Temperature Protection
Logic Shutdown Control
Programmable UVLO and Adaptive
Battery Low Output
BLON
2.7V to 5.5V Input
VI
High Efficiency 800mA Synchronous Buck Regulator
1M
®
22µF
C
IN
SP6651A High Efficiency 800mA Synchronous Buck Regulator
1µF
CV
R
IN
10Ω
VIN
D1
D0
Ideal for portable designs powered with Li Ion battery
P
V
BLON
D1
D0
VIN
IN
SP6651A
1
P
GND
V
GND
OUT
FB
LX
Now Available in Lead Free Packaging
TYPICAL APPLICATION SCHEMATIC
APPLICATIONS
BLON
PDA's
DSC's
MP3 Players
USB Devices
Point of Use Power
PV
V
D1
D0
IN
IN
L1
10µH
1
2
3
4
5
SP6651A
10 Pin DFN
C
22µF
OUT
© Copyright 2004 Sipex Corporation
SP6651A
R
R
200K
F
I
V
800mA
DESCRIPTION
OUT
10
VO
9
8
7
6
CF
22pF
LX
P
GND
V
FB
GND
OUT
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