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SP6641BEK-L-3-3

Description
Switching Voltage Regulators 28-V 400-mA Switch Boost Converter
Categorysemiconductor    Power management   
File Size130KB,13 Pages
ManufacturerExar [Exar Corporation]
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SP6641BEK-L-3-3 Overview

Switching Voltage Regulators 28-V 400-mA Switch Boost Converter

SP6641BEK-L-3-3 Parametric

Parameter NameAttribute value
Product CategorySwitching Voltage Regulators
ManufacturerExar [Exar Corporation]
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseSOT-23-5
Output Voltage3.3 V
Output Current500 mA
Number of Outputs1 Output
Input Voltage MAX4.5 V
TopologyBoost
Input Voltage MIN0.5 V
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
PackagingBulk
ProductVoltage Regulators
Factory Pack Quantity50
TypeVoltage Converter
®
SP6641A/6641B
500mA Alkaline DC/DC Boost Regulator in SOT-23
Ultra Low Quiescent Current: 10µA
Wide Input Voltage Range: 0.9V to 4.5V
90mA I
OUT
at 1.3V Input (SP6641A-3.3V)
500mA I
OUT
at 2.6V Input (SP6641B-3.3V)
100mA I
OUT
at 2.0V Input (SP6641A-5.0V)
500mA I
OUT
at 3.3V Input (SP6641B-5.0V)
Fixed 3.3V or 5.0V Output Voltage
Up to 87% Efficiency
0.3Ω NFET R
DS
on
Startup Voltage Guaranteed at 0.9V
0.33A Inductor Current Limit (SP6641A)
1A Inductor Current Limit (SP6641B)
Logic Shutdown Control
SOT-23-5 Package
LX 1
5 V
BATT
SP6641
GND 2
5 Pin SOT-23
V
OUT
3
4 SHDN
APPLICATIONS
PDA's
DSC's
CD/MP3 Players
Pagers
Digital Cameras
Portable Handheld Medical Devices
Now Available in Lead Free Packaging
DESCRIPTION
The SP6641 is an ultra-low quiescent current, high efficiency, DC-DC boost converter designed
for single and dual cell alkaline, or Li-ion battery applications found in PDA’s, MP3 players, and
other handheld portable devices. The SP6641 features a 10µA quiescent current, a 0.3Ω N-
channel charging switch, 0.9V input startup, and a 0.33A or 1.0A inductor current limiting feature.
The SP6641 is offered in a 5 pin SOT-23 package and provides an extremely small power supply
footprint optimized for portable applications. The SP6641 is preset to 3.3V and can be controlled
by a 1nA active LOW shutdown pin.
L1
0.9V to 4.5V
V
BATT
V
BATT
5
®
1 LX
D1
2 GND
3 V
OUT
R1
C3
C1
U1
SP6641A
SHDN
SHDN
I
OUT
(mA)
4
C2
V
OUT
+3.3V or 5V
SP6641A 3.3V & 5V:
C1 = C2 = 22µF Ceramic, L1 = 22µH CDRH5D28,
D1 = MBR0520, C3 = Open, R1 = Shorted.
SP6641B 3.3V & 5V:
C1 = C2 = 100µF POSCAP, L1 = 10µH CDRH5D28,
D1 = ZHCS2000, C3 = 1µF Ceramic, R1 = 10Ω.
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
1.0
SP6641B, 1.0A, 3.3V
SP6641B, 1.0A, 5V
SP6641A, 0.33A, 3.3V
SP6641A, 0.33A, 5V
1.5
2.0
2.5
3.0
3.5
4.0
4.5
V
IN
(V)
Figure 1. Typical Application Schematic
Rev. 5/26/05,
*Patent Pending
Figure 2. Maximum Load Current in Operation
© Copyright 2002 Sipex Corporation
SP6641A/6641B 500mA Alkaline DC/DC Boost Regulator in SOT-23
1

SP6641BEK-L-3-3 Related Products

SP6641BEK-L-3-3 SP6641BKEB-3-3 SP6641AEK-L-3-3 SP6641AEK-L-5-0-TR
Description Switching Voltage Regulators 28-V 400-mA Switch Boost Converter 8-bit Microcontrollers - MCU 32KB In-system Flash 20MHz 1.8V-5.5V Switching Voltage Regulators 100mA Alkaline DC/DC
Product Category Switching Voltage Regulators Switching Voltage Regulators Switching Voltage Regulators Switching Voltage Regulators
Manufacturer Exar [Exar Corporation] Exar [Exar Corporation] Exar [Exar Corporation] Exar [Exar Corporation]
RoHS Details Details Details Details
Mounting Style SMD/SMT SMD/SMT SMD/SMT SMD/SMT
Package / Case SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5
Packaging Bulk Bulk Bulk Reel
Product Voltage Regulators Voltage Regulators Voltage Regulators Voltage Regulators
Factory Pack Quantity 50 1 50 3000
Type Voltage Converter Voltage Converter Voltage Converter Voltage Converter
Topology Boost Boost Boost -
Unit Weight - 0.000222 oz 0.000222 oz 0.000222 oz
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