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参数资料
| 型号： | MAX1924 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Advanced Li+ Battery-Pack Protectors |
| 中文描述： | 高级Li+电池组保护器 |
| 文件页数： | 8/16页 |
| 文件大小： | 308K |
| 代理商： | MAX1924 |
M
Advanced Li+ Battery-Pack Protectors
8
_______________________________________________________________________________________
the direction of current flow. To reverse the current flow,
the charger has to be removed (Figure 5). The sustain-
ing condition for the latch is a 100mV (max) voltage
drop across SRC and B4P. Since the charge-current
fault threshold between BN and PKN is also 100mV
(typ), the R
DS_ON
of the overcharge protection MOSFET
must be greater than the sense resistor in order to
ensure a latched state.
Discharge-Current Fault Protection
The MAX1894/MAX1924 protect against excessive dis-
charge-current by monitoring the voltage developed
across R
SENSE
. If V
RSENSE
exceeds the discharge-cur-
rent fault threshold (V
OD_TH
, typically 145mV) for more
than 3ms, the discharge-current comparator is tripped,
setting
DSO
,
CGO
, and
TKO
high.
Discharge-current fault is latched and is not reset until
the MAX1894/MAX1924 detect a reversal in the direc-
tion of current flow. To reverse the current flow, a
charger must be applied (Figure 6).
Pack-Short Current Fault Protection
The MAX1894/MAX1924 protect against a shorted
pack by monitoring the voltage developed across
R
SENSE
. If V
RSENSE
exceeds the pack-short threshold
(V
PS_TH
, typically 405mV) for more than 450μs, the
pack-short comparator is tripped, setting
CGO
,
DSO
,
and
TKO
high.
DSO
15
14
TKO
13
B4P
1
SRC
16
2
R4
51
R
TKO
510
R3
1k
C4
1
μ
F
C6
0.1
μ
F
R5
10
C3
0.1
μ
F
C2
0.1
μ
F
C1
0.1
μ
F
R2
1k
R1
1k
V
CC
B3P
3
IC3
4
B2P
5
IC2
6
B1P
7
IC1
8
BN
9
PKN
10
CGO
MICRO-
CONTROLLER
12
11
SHDN
CTL
R
0.02
PACK +
PACK -
OVERDISCHARGE
PROTECTION
OVERCHARGE
PROTECTION
D1
CMPSH-3
TRICKLE
CHARGE
MAX1894X
MAX1924X
C5
2.2
μ
F
BN
Figure 1. Typical Applications Circuit with Trickle Charge
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1894XEEE | Advanced Li+ Battery-Pack Protectors |
| MAX1924XEEE | Advanced Li+ Battery-Pack Protectors |
| MAX1924VEEE | Advanced Li+ Battery-Pack Protectors |
| MAX1894 | Fixed-Point Digital Signal Processor 256-BGA |
| MAX1894-MAX1924 | Fixed-Point Digital Signal Processor 288-FCBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1924VEEE | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1924VEEE+ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1924VEEE+T | 制造商:Maxim Integrated Products 功能描述:ADVANCED LI+ BATTERY-PACK PROTECTOR - Tape and Reel |
| MAX1924XEEE | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1924XEEE+ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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