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| 型号： | ADP3810 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | Secondary Side, Off-Line Battery Charger Controllers(电池充电控制器) |
| 中文描述： | 二次侧，离线电池充电器控制器（电池充电控制器） |
| 文件页数： | 1/16页 |
| 文件大小： | 403K |
| 代理商： | ADP3810 |
REV. 0
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
ADP3810/ADP3811
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., 1996
Secondary Side, Off-Line
Battery Charger Controllers
FUNCTIONAL BLOCK DIAGRAM
ADP3810/
ADP3811
V
SENSE
V
CS
COMP
OUT
V
CC
V
REF
GND
V
CTRL
1.5M
80k
V
REF
UVLO
GM
GM1
UVLO
UVLO
R1
R2
ADP3810
ONLY
GM2
V
REF
FEATURES
Programmable Charge Current
High Precision Battery Voltage Limit
Precision 2.000 V Reference
Low Voltage Drop Current Sense: 300 mV Full Scale
Full Operation in Shorted and Open Battery Conditions
Drives Diode-Side of Optocoupler
Wide Operating Supply Range: 2.7 V to 16 V
Undervoltage Lockout
SO-8 Package
ADP3810
Internal Precision Voltage Divider for Battery Sense
Four Final Battery Voltage Options Available: 4.2 V,
8.4 V, 12.6 V, 16.8 V
ADP3811
Adjustable Final Battery Voltage
APPLICATIONS
Battery Charger Controller for:
LiIon Batteries (ADP3810)
NiCad, NiMH Batteries (ADP3811)
GENERAL DESCRIPTION
The ADP3810 and ADP3811 combine a programmable current
limit with a battery voltage limit to provide a constant current,
constant voltage battery charger controller. In secondary side,
off-line applications, the output directly drives the diode side of
an optocoupler to give isolated feedback control of a primary
side PWM. The circuitry includes two gain (g
m
) stages, a preci-
sion 2.0 V reference, a control input buffer, an Undervoltage
Lock Out (UVLO) comparator, an output buffer and an over-
voltage comparator.
The current limit amplifier senses the voltage drop across an
external sense resistor to control the average current for charg-
ing a battery. The voltage drop can be adjusted from 25 mV
to 300 mV, giving a charging current limit from 100 mA to
1.2 amps with a 0.25
sense resistor. An external dc voltage
on the V
CTRL
input sets the voltage drop. Because this input
is high impedance, a filtered PWM output can be used to set
the voltage.
As the battery voltage approaches its voltage limit, the voltage
sense amplifier takes over to maintain a constant battery volt-
age. The two amplifiers essentially operate in an “OR” fash-
ion. Either the current is limited, or the voltage is limited.
The ADP3810 has internal thin-film resistors that are trimmed
to provide a precise final voltage for LiIon batteries. Four volt-
age options are available, corresponding to 1-4 LiIon cells as
follows: 4.2 V, 8.4 V, 12.6 V and 16.8 V.
The ADP3811 omits these resistors allowing any battery volt-
age to be programmed with external resistors.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP3810AR-12.6 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:OFF LINE BATTERY CHARGER SMD 3810 |
| adp3810ar-12.6-rl7 | 制造商:Rochester Electronics LLC 功能描述:OFF-LINE BATTERY CHARGER CONTRLR-12.6V - Tape and Reel 制造商:Analog Devices 功能描述: |
| ADP3810AR-126 | 制造商:AD 制造商全称:Analog Devices 功能描述:Secondary Side, Off-Line Battery Charger Controllers |
| ADP3810AR-16.8 | 制造商:Analog Devices 功能描述:Battery Charger 6mA 16.8V 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADP3810AR-168 | 制造商:AD 制造商全称:Analog Devices 功能描述:Secondary Side, Off-Line Battery Charger Controllers |
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