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参数资料
| 型号： | MAX1925 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 数字信号处理 |
| 英文描述： | Fixed-Point Digital Signal Processor 548-FCBGA |
| 中文描述： | 开关模式单节Li+电池充电器 |
| 文件页数： | 3/16页 |
| 文件大小： | 443K |
| 代理商： | MAX1925 |
M
Switch-Mode 1-Cell Li+ Chargers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
PGND
= V
GND
= 0, V
INP
= V
IN
= V
CHG
= 5V, V
BATT
= V
CS
= V
EN
= 4V, THRM = 10k
to GND, C
CT
= 100nF,
T
A
= 0
°
C to +85
°
C
,
unless otherwise noted. Typical values are at T
A
= +25
°
C.)
PARAMETER
CONDITIONS
MIN
3.92
TYP
4.00
MAX
4.08
UNITS
V
Restart Threshold
Charging restarts when BATT falls to this point
BATT Voltage Fault Threshold
If BATT exceeds this threshold, EXT is high
(external MOSFET is off) and
CHG
blinks
4.275
4.350
4.425
V
CURRENT LOOP
V
CS
- V
BATT
, average value
Rise/fall hysteresis
V
BATT
< 2V
Average value, 2V < V
BATT
< 3V (charge current is C/10)
Rise/fall hysteresis, 2V < V
BATT
< 3V
132
142
30
4
14
12
152
CS - BATT Sense Threshold
mV
Prequal1 Charge Current
3
6
mA
Prequal2 CS - BATT Sense
Threshold
mV
Current Threshold for
Full-Battery Indication
I
LOAD
falling, as percentage of fast charge current
6
12
20
%
DRIVER FUNCTIONS
EXT Sink/Source Current
EXT On-Resistance
Nominal Switching Frequency
TIMER FUNCTIONS
Full-Time Timeout - t
FULL
EXT high or low
V
BATT
= 3.6V, L =10μH
1
5
A
12
235
kHz
C
CT
= 100nF
3.02
hours
Prequal1 Timeout
C
CT
= 100nF
t
FULL/1088
(10s)
s
Prequal2 Timeout
C
CT
= 100nF
t
FULL/17
(10.67 min)
min
Timer Accuracy
CHG
Output Low Current
C
CT
= 100nF for 3 hours
V
CHG
= 1V
-15
7
+15
14
%
mA
10
CHG
Output High Leakage
Current
V
CHG
= 12V
1
μA
CHG
Blink Rate - Fault
ACON
High Leakage
ACON
Sink Current
THERMISTOR MONITOR
(Note 2)
Fault state (50% duty cycle), C
CT
= 100nF
V
ACON
= 12V
V
ACON
= 0.4V
0.5
0.01
Hz
μA
mA
1.00
2
THRM Sense Current for Hot
Qualification
344.1
352.9
361.7
μA
THRM Sense Current for Cold
Qualification
47.58
48.80
50.02
μA
THRM Sense-Voltage Trip Point
(Note 3)
1.386
1.400
1.414
V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1925ETC | 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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 |
| MAX1925ETC+ | 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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 |
| MAX1925ETC+T | 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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 |
| MAX1925ETC-T | 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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 |
| MAX1926ETC | 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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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