- 您现在的位置：买卖IC网 > PDF目录375262 > ADP3801AR (ANALOG DEVICES INC) Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.50V) 8-SM8 -40 to 110 PDF资料下载
参数资料
| 型号： | ADP3801AR |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 电源管理 |
| 英文描述： | Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.50V) 8-SM8 -40 to 110 |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 8/20页 |
| 文件大小： | 256K |
| 代理商： | ADP3801AR |
ADP3801/ADP3802
–8–
REV. 0
BIAS
LDO
RESET
GATE
DRIVE
FF
S
VI
N
CS+
OSCILLATOR
D1
L
R
CS
V
REF
3.3V
UVLO
R
BATA
ISET
A/B
CS–
(FROM
m
C)
Rf2
Rf1
COMP
1
m
F
V
REF
POWER-
ON
RESET
(FROM
m
C)
(TO
m
C)
(TO
m
C)
FINAL
VBAT
PROG
GND
MUX
PROG
(FROM
m
C)
2.475V
ADJ
VCC
V
REF
3R
DRV
VL
D2
RB
SD
BATA
1
m
F
CI
N
COUT
EOC
Q
VT
ADP3801/ADP3802
100k
V
BATB
GM1
GM2
GM3
R
100k
V
V
REF
Figure 20. Simplified Application Diagram
Setting the Final Battery Voltage
The final battery voltage is determined by the voltage on the
Battery Programming (PROG) pin. This pin controls the state
of the PROG multiplexer, which selects the appropriate tap
from the internal battery voltage resistor divider. The specifica-
tion table details the PROG voltages for each final battery volt-
age. A resistor divider from the LDO can be used to set the
PROG voltage as shown in Figure 21. To provide fail safe op-
eration, a PROG voltage equal to 0.0 V or 3.3 V results in the
minimum final battery voltage of 4.2 V. The PROG input is
high impedance, so the voltage can be set with a high imped-
ance resistor divider from VL. Alternatively, a PWM output
from a microcontroller can be used with an RC filter to generate
the desired threshold voltage.
VL
R1
4.2
V
T1
= 0.0V
0*
8.4
V
T2
= 1.1V
200k
V
100k
V
12.6
V
T3
= 2.2V
100k
V
200k
V
V
BAT
SETTING
R1 (5%)
R2 (5%)
R2
PROG
*CONNECT PROG TO
GND FOR V
BAT
= 4.2V
Figure 21. Resistor Divider Sets the Final Battery Voltage
相关PDF资料 |
PDF描述 |
|---|---|
| ADP3802AR | Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.50V) 8-SM8 -40 to 110 |
| ADP3810 | Secondary Side, Off-Line Battery Charger Controllers(电池充电控制器) |
| ADP3811 | Secondary Side, Off-Line Battery Charger Controllers(电池充电控制器) |
| ADP667 | +5 V Fixed, Adjustable Low-Dropout Linear Voltage Regulator |
| ADP667AN | +5 V Fixed, Adjustable Low-Dropout Linear Voltage Regulator |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP3801AR-REEL | 制造商:Rochester Electronics LLC 功能描述:SWITCH MODE DUAL CHARGER/LDO REGULATOR - Tape and Reel |
| ADP3802 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Frequency Switch Mode Dual Li-Ion Battery Chargers |
| ADP3802AR | 制造商:AD 制造商全称:Analog Devices 功能描述:High Frequency Switch Mode Dual Li-Ion Battery Chargers |
| ADP3804 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Frequency Switch Mode Li-Ion Battery Charger |
| ADP3804JRU | 制造商:AD 制造商全称:Analog Devices 功能描述:High Frequency Switch Mode Li-Ion Battery Charger |
发布紧急采购，3分钟左右您将得到回复。