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參數資料
| 型號： | ADP3804 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.50V) 8-TSSOP -40 to 110 |
| 中文描述： | 高頻開關模式鋰離子電池充電器 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 89K |
| 代理商： | ADP3804 |
REV. PrI
12/5/00
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.
Prelimnary Technical Data
ADP3804
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
TECHNICAL
DATA
FUNCTIONAL BLOCK DIAGRAM
Hgh Frequency Swtch Mode
Li-Ion Battery Charger
GENERAL DESCRIPT ION
T he ADP3804 is a complete Li-Ion battery charging IC. T he
device combines high output voltage accuracy with constant
current control to simplify the implementation of Constant-
available in two options. T he ADP3804-12.6 guarantees the
final battery voltage to 12.6 V ± 0.6%, the ADP3804-12.5
guarantees 12.525 V ± 0.6% and the ADP3804 is adjustable
using two external resistors to set the battery voltage. T he
current sense amplifier has rail-to-rail inputs to accurately
operate under low drop out and short circuit conditions. T he
charge current is programmable with a DC voltage on ISET . A
second differential amplifier senses the system current across an
external sense resistor and outputs a linear voltage on the ISYS
pin. T he boosted synchronous driver allows the use of two
FEATURES
Li-Ion Battery Charger
Fixed 12,525 V, 12.600 V, or Adjustable Battery
Voltage
High End-of-Charge Voltage Accuracy
0.4% @ +25 C
0.6% @ 5 C to 55 C
0.75% @ 0 C to 85 C
Programmable Charge Current with
Rail-to-Rail Sensing
System Current Sense with Reverse Input Protection
Softstart Charge Current
Undervoltage Lockout
Boosted Synchronous Drive For External NMOS
Programmable Oscillator Frequency
Oscillator SYNC Pin
Constant Current/Constant Voltage Flag
Trickle Charge
APPLICATIONS
Portable Computers
Fast Chargers
BATTERY
ADJUST
COMP
SD
BOOST
REGULATOR
+
SUPPLY
REGULATOR
UVLO
ADP3804
REG
CT
VCC BSTREG
BST
DRVH
SW
DRVL
PGND
AGND
OSCILLATOR
LIMIT
ISYS
ISET
BAT
ADJ
REFERENCE
+
BIAS
VREF
REF
gm1
gm2
SYNC
CCCV
INPUT
DIVIDER
ADP3804-12.6
ADP3804-12.5
VREF
AMP
1
AMP
2
CS+
SYS
CS
SYS+
BOOSTED
SYNCHRONOUS
DRIVER
相關PDF資料 |
PDF描述 |
|---|---|
| ADP3804JRU | Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.50V) 8-TSSOP -40 to 110 |
| ADP3806JRU-12.6-R7 | High-Frequency Switch Mode Li-Ion Battery Charger |
| ADP3806JRU-12.6-RL | High-Frequency Switch Mode Li-Ion Battery Charger |
| ADP3806JRUZ-12.5R7 | High-Frequency Switch Mode Li-Ion Battery Charger |
| ADP3806JRUZ-12.5RL | High-Frequency Switch Mode Li-Ion Battery Charger |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADP3804JRU | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Frequency Switch Mode Li-Ion Battery Charger |
| ADP3804JRU-125 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Frequency Switch Mode Li-Ion Battery Charger |
| ADP3804JRU-126 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Frequency Switch Mode Li-Ion Battery Charger |
| ADP3806 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High-Frequency Switch Mode Li-Ion Battery Charger |
| ADP3806JRU | 制造商:AD 制造商全稱:Analog Devices 功能描述:High-Frequency Switch Mode Li-Ion Battery Charger |
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