參數(shù)資料
型號： SP6641BEK-50TR
英文描述： MS3120E20-39PXF0
中文描述： 堿性500mA的DC / DC升壓穩(wěn)壓器采用SOT - 23
文件頁數(shù)： 1/13頁
文件大?。?/td> 120K
代理商： SP6641BEK-50TR
1
Rev. 3/5/02, *Patent Pending
SP6641A/6641B 500mA Alkaline DC/DC Boost Regulator in SOT-23
Copyright 2002 Sipex Corporation
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 10
μ
A quiescent current, a 0.3
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.
500mA Alkaline DC/DC Boost Regulator in SOT-23
I
Ultra Low Quiescent Current: 10
μ
A
I
Wide Input Voltage Range: 0.9V to 4.5V
I
90mA I
OUT
at 1.3V Input (SP6641A-3.3V)
I
500mA I
OUT
at 2.6V Input (SP6641B-3.3V)
I
100mA I
OUT
at 2.0V Input (SP6641A-5.0V)
I
500mA I
OUT
at 3.3V Input (SP6641B-5.0V)
I
Fixed 3.3V or 5.0V Output Voltage
I
Up to 87% Efficiency
I
0.3
NFET R
DS
on
I
Startup Voltage Guaranteed at 0.9V
I
0.33A Inductor Current Limit (SP6641A)
I
1A Inductor Current Limit (SP6641B)
I
Logic Shutdown Control
I
SOT-23-5 Package
V
OUT
GND
SHDN
V
BATT
LX
SP6641
5 Pin SOT-23
1
2
3
5
4
APPLICATIONS
I
PDA's
I
DSC's
I
CD/MP3 Players
I
Pagers
I
Digital Cameras
I
Portable Handheld Medical Devices
SP6641A/6641B
Figure 1. Typical Application Schematic
Figure 2. Maximum Load Current in Operation
I
O
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
V
IN
(V)
SP6641B, 1.0A, 3.3V
SP6641B, 1.0A, 5V
SP6641A, 0.33A, 3.3V
SP6641A, 0.33A, 5V
GND
LX
V
BATT
SHDN
L1
0.9V to 4.5V
V
BATT
U1
SP6641A
V
OUT
SHDN
C2
V
+3.3V or 5V
D1
1
2
3
C1
5
4
C3
R1
SP6641A 3.3V & 5V:
D1 = MBR0520, C3 = Open, R1 = Shorted.
μ
F Ceramic, L1 = 22
μ
H CDRH5D28,
SP6641B 3.3V & 5V:
D1 = ZHCS2000, C3 = 1
μ
F POSCAF Ceramic, R1 = 10
μ
H CDRH5.
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相關代理商/技術(shù)參數(shù)
參數(shù)描述
SP6641BEK-L-3-3 功能描述:開關變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-3-3/TR 功能描述:開關變換器、穩(wěn)壓器與控制器 100mA Alkaline DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-5-0 功能描述:開關變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BEK-L-5-0/TR 功能描述:開關變換器、穩(wěn)壓器與控制器 500mA Alkaline DC/DC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
SP6641BKEB 功能描述:電源管理IC開發(fā)工具 500mA Alkaline DC/DC Boost Regulator RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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