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參數(shù)資料
| 型號(hào)： | ADP3820 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Li-Ion Battery Chargers(鋰離子電池充電器) |
| 中文描述： | 鋰離子電池充電器（鋰離子電池充電器） |
| 文件頁(yè)數(shù)： | 1/3頁(yè) |
| 文件大?。?/td> | 111K |
| 代理商： | ADP3820 |
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
ANALOG DEVICES, INC., 1998
REV. 9 1/27/98
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
PRELIMINARY
Lithium-Ion
Battery Charger
ADP3820
FEATURES
±
1% Accuracy
800
μ
A Quiescent Current
Shutdown Current : 1
μ
A (Typical)
Stable with 10
μ
F Load Capacitor
4.5 V to 15 V Input Operating Range
Integrated Reverse Leakage Protection
6 Lead SOT-23 Package
Programmable Charge Current
–20
°
C to 85
°
C Ambient Temperature Range
Internal Gate-to-Source Protective Clamp
3
μ
A Reverse Leakage
APPLICATIONS
LiIon Battery Chargers
Desktop Computers
Handheld Instruments
Cellular Telephones
Battery Operated Devices
Preliminary specifications subject to change without notice.
COMPANY CONFIDENTIAL
GENERAL DESCRIPTION
The ADP3820 is a precision LiIon battery charge controller
which can be used with an external Power PMOS device to
form a 2 chip low cost, low dropout linear charger. It is available
in two voltage options to accommodate LiIon batteries with
coke or graphite anodes. The ADP3820's high accuracy (
±
1%)
low shutdown current (1
μ
A) and easy charge current program-
ming make this device especially attractive as a battery charge
controller.
Charge current can be set by an external resistor or printed
circuit board trace resistance. For example, 100 m
of board
metal trace resistance can be used to set the charge current to
0.4 A. Additional features of this device include foldback
current limit, overload recovery, and a gate-to-source voltage
clamp to protect the external MOSFET. The proprietary circuit
also minimizes the reverse leakage current from the battery if the
input voltage of the charger is disconnected. This feature
eliminates the need for an external serial blocking diode.
The ADP3820 operates with a wide input voltage range from
4.5 V to 15 V. It is specified over the industrial temperature
range of -20
°
C to 85
°
C and is available in the ultra small 6 pin
surface mount SOT-23 package.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. Typical LiIon Charger Application Circuit
VREF
IS
G
VOUT
GND
EN
VIN
50MV
+
-
BIAS
ADP3820-xx
VIN
RS
VOUT
LiIon
Battery
GND
OUT
IN
G
100m
1μF
EN
IS
+
-
10μF
R1
10k
C1
NDP6020P
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADR02AKS-R2 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series I; Body Material:Metal; Series:LJT; No. of Contacts:37; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight RoHS Compliant: No |
| ADR01 | Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage References |
| ADR01AKS-R2 | Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage References |
| ADR01AKS-REEL7 | Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage References |
| ADR01AR | Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage References |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3820AR-4.1 | 制造商:Analog Devices 功能描述:Battery Charger Li-Ion 4.1V 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:LITHIUM ION BATTERY CHARGER CONTROLLER - Bulk |
| ADP3820AR-4.1-REEL | 制造商:Analog Devices 功能描述:Battery Charger Li-Ion 1mA 4.1V 8-Pin SOIC N T/R |
| ADP3820AR-4.2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| ADP3820AR-41 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Lithium-Ion Battery Charger |
| ADP3820AR-42 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Lithium-Ion Battery Charger |
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