MAX1874(2003) データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX1874
(Rev.:2003)
(Rev.:2003)
Maxim Integrated
MAX1874 Datasheet PDF : 16 Pages
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Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
Typical Operating Characteristics
(VUSB = VDC = VDCLV = VEN = 5V, VBATT = 4.2V, VTHRM = VREF / 2, VDCI = VREF, VUSEL = 5V, Circuit of Figure 4, TA = +25°C,
unless otherwise noted.)
DC INPUT CURRENT
vs. DC INPUT VOLTAGE
14
VUSB = 0
VBATT = 4.2V
12
VEN = 5V
INCLUDES R2 CURRENT
10
8
6
4
2
0
0 2 4 6 8 10 12 14 16 18 20
VDC (V)
CHARGE CURRENT
vs. DC INPUT-VOLTAGE HEADROOM
800
700
DCI SET FOR IBATT = 750mA
600
500
400
300
200
100
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
(VDC - VBATT) (V)
CHARGE CURRENT vs. TEMPERATURE
WITH THERMAL REGULATION
1.2
VDCI = VREF
VDC = 5V
1.0
VBATT = 3.9V
0.8
0.6
0.4
0.2
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
USB INPUT CURRENT
vs. USB INPUT VOLTAGE
5.0
VEN = 5V, VDC FLOATING
4.5 INCLUDES R3 AND R4 CURRENTS
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
01234567
VUSB (V)
CHARGE CURRENT
vs. USB VOLTAGE HEADROOM
600
500
400
300
200
100
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
(VUSB - VBATT) (V)
CHARGE CURRENT vs. VDCI
1.2
1.0
0.8
0.6
0.4
0.2
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VDCI (V)
USB INPUT CURRENT
vs. USB INPUT VOLTAGE (VEN = 0)
1.4 VEN = 0
INCLUDES R3 AND R4 CURRENTS
1.2
1.0
0.8
0.6
0.4
0.2
0
01234567
VUSB (V)
CHARGE CURRENT vs. BATTERY VOLTAGE
(IBATT vs. VBATT)
1000
VEN = 5
900 VUSB = 0
800 IBATT = SET TO 750mA
VDC = VDCLV = 5V
700
600
500
400
300
200
100
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VBATT (V)
BATTERY TERMINATION VOLTAGE
vs. TEMPERATURE
4.25
4.24
4.23
4.22
4.21
4.20
4.19
4.18
4.17
4.16
4.15
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
6 _______________________________________________________________________________________
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