參數(shù)資料
型號(hào)： MAX1924XEEE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 電源管理
英文描述： Advanced Li+ Battery-Pack Protectors
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁(yè)數(shù)： 8/16頁(yè)
文件大?。?/td> 308K
代理商： MAX1924XEEE
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
相關(guān)PDF資料
PDF描述
MAX1924VEEE Advanced Li+ Battery-Pack Protectors
MAX1894 Fixed-Point Digital Signal Processor 256-BGA
MAX1894-MAX1924 Fixed-Point Digital Signal Processor 288-FCBGA
MAX1925 Fixed-Point Digital Signal Processor 548-FCBGA
MAX1926 Switch-Mode 1-Cell Li+ Chargers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1924XEEE+ 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1924XEEE+T 制造商:Maxim Integrated Products 功能描述:SMALLEST LI+ PROTECTION SOLUTION ALSO OFFERS THE MOST COMPLE - Tape and Reel
MAX1925ETC 功能描述:電池管理 Switch-Mode 1-Cell Li+ Charger RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1925ETC+ 功能描述:電池管理 Switch-Mode 1-Cell Li+ Charger RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1925ETC+T 功能描述:電池管理 Switch-Mode 1-Cell Li+ Charger RoHS:否 制造商:Texas Instruments 電池類(lèi)型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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