- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383341 > MAX1894 (Maxim Integrated Products, Inc.) Fixed-Point Digital Signal Processor 256-BGA PDF資料下載
參數(shù)資料
| 型號： | MAX1894 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | Fixed-Point Digital Signal Processor 256-BGA |
| 中文描述： | 高級Li+電池組保護(hù)器 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 308K |
| 代理商： | MAX1894 |
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 |
|---|---|
| MAX1894-MAX1924 | Fixed-Point Digital Signal Processor 288-FCBGA |
| MAX1925 | Fixed-Point Digital Signal Processor 548-FCBGA |
| MAX1926 | Switch-Mode 1-Cell Li+ Chargers |
| MAX1926ETC | Switch-Mode 1-Cell Li+ Chargers |
| MAX1925ETC | Switch-Mode 1-Cell Li+ Chargers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1894EVKIT | 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX1894XEEE | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型: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 |
| MAX1894XEEE-T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型: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 |
| MAX1895EGI | 功能描述:顯示驅(qū)動(dòng)器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX1895EGI-T | 功能描述:顯示驅(qū)動(dòng)器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。