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MAX1908 Arkusz danych(PDF) 11 Page - Maxim Integrated Products

Numer części MAX1908
Szczegółowy opis  Low-Cost Multichemistry Battery Chargers
PDF  30 Pages
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Producent  MAXIM [Maxim Integrated Products]
Strona internetowa  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1908 Arkusz danych(HTML) 11 Page - Maxim Integrated Products

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Low-Cost Multichemistry Battery Chargers
______________________________________________________________________________________
11
INDUCTOR
CURRENT
500mA/div
VDCIN
10V/div
VBATT
500mV/div
LINE-TRANSIENT RESPONSE
MAX1908 toc04
10ms/div
ICTL = LDO
VCTL = LDO
ICHARGE = 3A
LINE STEP 18.5V TO 27.5V
-1.0
-0.8
-0.9
-0.6
-0.7
-0.4
-0.5
-0.3
-0.1
-0.2
0
0
234
1
567
9
810
LDO LOAD REGULATION
LDO CURRENT (mA)
VLDO = 5.4V
-0.05
-0.03
-0.04
-0.01
-0.02
0.01
0
0.02
0.04
0.03
0.05
8
121416
10
18 20 22
26
24
28
LDO LINE REGULATION
VIN (V)
ILDO = 0
VLDO = 5.4V
-0.10
-0.07
-0.08
-0.09
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
0
0
200
100
300
400
500
REF VOLTAGE LOAD REGULATION
REF CURRENT (
µA)
-0.10
-0.04
-0.06
-0.08
-0.02
0
0.02
0.04
0.06
0.08
0.10
-40
10
-15
35
60
85
REF VOLTAGE ERROR vs. TEMPERATURE
TEMPERATURE (
°C)
90
0
0.01
10
1
0.1
EFFICIENCY vs. CHARGE CURRENT
30
10
70
50
100
40
20
80
60
CHARGE CURRENT (A)
VBATT = 16V
VBATT = 8V
VBATT = 12V
0
100
50
250
200
150
300
350
450
400
500
04
6
2
8
10 12 14 16 18 20 22
FREQUENCY vs. VIN - VBATT
(VIN - VBATT) (V)
ICHARGE = 3A
VCTL = ICTL = LDO
3 CELLS
4 CELLS
-0.4
-0.1
-0.3
-0.5
0
0.2
0.3
0.4
0.5
01234
OUTPUT V/I CHARACTERISTICS
BATT CURRENT (A)
0.1
-0.2
2 CELLS
3 CELLS
4 CELLS
0
0.02
0.01
0.03
0.06
0.07
0.05
0.04
0.08
0
0.2 0.3 0.4 0.5
0.1
0.6 0.7 0.8 0.9 1.0
BATT VOLTAGE ERROR vs. VCTL
VCTL/REFIN (%)
4 CELLS
REFIN = 3.3V
NO LOAD
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VDCIN = 20V, TA = +25°C, unless otherwise noted.)



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