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SP6651AER Datasheet(PDF) 1 Page - Sipex Corporation

Part # SP6651AER
Description  High Efficiency 800mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6651AER Datasheet(HTML) 1 Page - Sipex Corporation

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Date: 5/25/04
SP6651A High Efficiency 800mA Synchronous Buck Regulator
© Copyright 2004 Sipex Corporation
SP6651A
FEATURES
■ 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
High Efficiency 800mA Synchronous Buck Regulator
APPLICATIONS
■ PDA's
■ DSC's
■ MP3 Players
■ USB Devices
■ Point of Use Power
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.
®
BLON
VI
VO
D1
D0
22µF
L1
10µH
VOUT
800mA
2.7V to 5.5V Input
10Ω
1µF
SP6651A
PVIN
BLON
D1
D0
LX
GND
VOUT
FB
PGND
VIN
22µF
CIN
CVIN
COUT
RVIN
RF
CF
22pF
RI
200K
1M
Ideal for portable designs powered with Li Ion battery
TYPICAL APPLICATION SCHEMATIC
DESCRIPTION
SP6651A
10 Pin DFN
10
9
8
7
6
1
2
3
4
5
PVIN
VIN
BLON
D1
D0
LX
PGND
GND
VOUT
FB
Now Available in Lead Free Packaging


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