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參數(shù)資料
| 型號(hào)： | LM3420M5X-8.4 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Lithium-Ion Battery Charge Controller |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | MINIATURE, SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大?。?/td> | 384K |
| 代理商： | LM3420M5X-8.4 |
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LM3420-4.2, -8.2, -8.4, -12.6, -16.8
Lithium-Ion Battery Charge Controller
General Description
The LM3420 series of controllers are monolithic integrated
circuits designed for charging and end-of-charge control for
Lithium-Ion rechargeable batteries. The LM3420 is available
in five fixed voltage versions for one through four cell charger
applications (4.2V, 8.2V/8.4V, 12.6V and 16.8V respec-
tively).
Included in a very small package is an (internally compen-
sated) op amp, a bandgap reference, an NPN output transis-
tor, and voltage setting resistors. The amplifier’s inverting in-
put
is
externally
accessible
compensation. The output is an open-emitter NPN transistor
capable of driving up to 15 mA of output current into external
circuitry.
A trimmed precision bandgap reference utilizes temperature
drift curvature correction for excellent voltage stability over
the operating temperature range. Available with an initial tol-
erance of 0.5% for the A grade version, and 1% for the stan-
dard version, the LM3420 allows for precision end-of-charge
control for Lithium-Ion rechargeable batteries.
for
loop
frequency
The LM3420 is available in a sub-miniature 5-lead SOT23-5
surface mount package thus allowing very compact designs.
Features
n
Voltage options for charging 1, 2, 3 or 4 cells
n
Tiny SOT23-5 package
n
Precision (0.5%) end-of-charge control
n
Drive capability for external power stage
n
Low quiescent current, 85 μA (typ.)
Applications
n
Lithium-Ion battery charging
n
Suitable for linear and switching regulator charger
designs
Typical Application and Functional Diagram
SIMPLE SWITCHER
is a registered trademark of National Semiconductor Corporation.
DS012359-1
Typical Constant Current/Constant Voltage
Li-Ion Battery Charger
DS012359-2
LM3420 Functional Diagram
July 2000
L
2000 National Semiconductor Corporation
DS012359
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM3420M5-8.4 | Lithium-Ion Battery Charge Controller |
| LM3420M5-8.2 | Lithium-Ion Battery Charge Controller |
| LM3420M5-4.2 | Lithium-Ion Battery Charge Controller |
| LM3420-42 | Lithium-Ion Battery Charge Controller |
| LM3420 | Lithium-Ion Battery Charge Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3421 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:N-Channel Controllers for Constant Current LED Drivers |
| LM3421_09 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:N-Channel Controllers for Constant Current LED Drivers |
| LM3421_10 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:N-Channel Controllers for Constant Current LED Drivers |
| LM342-155.52M | 制造商:CONNOR-WINFIELD 制造商全稱:Connor-Winfield Corporation 功能描述:5.0x7.0mm Surface Mount LVDS Clock Oscillator Series |
| LM3421MH | 制造商:Texas Instruments 功能描述:LED DRVR 3Segment 5V/9V/12V/15V/18V/24V 16-Pin TSSOP EP Rail 制造商:Texas Instruments 功能描述:LED DRIVER, HI V, 4.5~75V, POWERWISE |
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