參數(shù)資料
型號: MAX1925ETC
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Switch-Mode 1-Cell Li+ Chargers
中文描述: 0.1 A BATTERY CHARGE CONTROLLER, 235 kHz SWITCHING FREQ-MAX, QCC12
封裝: 4 X 4 MM, 0.80 MM HEIGHT, QFN-12
文件頁數(shù): 7/16頁
文件大小: 443K
代理商: MAX1925ETC
M
Switch-Mode 1-Cell Li+ Chargers
_______________________________________________________________________________________
7
FREQUENCY vs. BATTERY VOLTAGE
M
BATTERY VOLTAGE (V)
S
3.5
3.0
50
100
150
200
250
300
350
400
450
500
0
2.5
4.0
V
IN
= 12V
V
IN
= 8V
V
IN
= 5V
TIMER vs. CT CAPACITANCE
M
CT CAPACITANCE (nF)
T
100
0.1
1
10
100
1000
0.01
10
1000
t
FULLCHG
t
PREQUAL2
t
PREQUAL1
CHARGE CURRENT vs. TIME
M
TIME (h)
C
2.5
2.0
1.5
1.0
0.5
0.2
0.4
0.6
0.8
1.0
1.2
0
0
3.0
BATTERY VOLTAGE vs. TIME
M
TIME (h)
B
2.5
2.0
1.5
1.0
0.5
3.9
4.0
4.1
4.2
4.3
4.4
4.5
3.8
0
3.0
SWITCHING WAVEFORM
MAX1925/26 toc14
4
μ
s/div
1.2A
1A
0.8A
10V
0V
100mV/
div
INDUCTOR
CURRENT
V
LX
V
BATT
V
IN
= 5V
SWITCHING WAVEFORM
MAX1925/26 toc15
1
μ
s/div
1.2A
1.4A
1A
0.8A
10V
0V
100mV/
div
INDUCTOR
CURRENT
V
LX
V
BATT
V
IN
= 12V
CHARGE-ENABLE REPSONSE
EN
INDUCTOR
CURRENT
5V
0V
1A
0A
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
SUPPLY
= 5V, V
BATT
= 4V, T
A
= +25
°
C, unless otherwise noted.)
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