MAX1874ETE(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
MAX1874ETE
(Rev.:2003)
(Rev.:2003)
Maxim Integrated
MAX1874ETE 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 (continued)
(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.)
OFF-BATTERY LEAKAGE
vs. USB INPUT VOLTAGE
10
9
VEN = 0
VDCLV = VDC = 0
8 VBATT = 4.2V
7
6
5
4
3
2
1
0
01234567
VUSB (V)
BATTERY CURRENT AND VOLTAGE
vs. TIME
1000
900
IBATT
8.0 MAX1874 toc13
1.5AHr CELL
7.2
800
6.4
CHG
700
5.6
600
4.8
500
4.0
400
VBATT
3.2
300
2.4
200
1.6
100
0.8
0
0
0 50 100 150 200 250 300
TIME (MIN)
OFF-BATTERY LEAKAGE
vs. DC INPUT VOLTAGE
10
9
VEN = 0
VUSB = 0
8 VBATT = 4.2V
VDC = VDCLV
7
6
5
4
3
2
1
0
01234567
VDCIN (V)
USB LEAKAGE vs. DC INPUT VOLTAGE
600
LEAKAGE FROM USB TO GND
500
VEN = 5V
400
300
200
100
0
0 2 4 6 8 10 12 14 16 18
VDCIN (V)
RESPONSE TO OVERVOLTAGE INPUT
USB = 0
MAX1874 toc14
20V/div
DC
10V/div
DC CONNECT WAVEFORMS
VUSB = 0, VBATT = 3.9V
MAX1874 toc15
DC
5V/div
10V/div
DCLV 10V/div
DCLV
PON
5V/div
20V/div
PON
1A/div
DCOK 10V/div
IBATT
DCOK
40ms/div
40ms/div
10V/div
10V/div
10V/div
DC CONNECT WAVEFORMS
VUSB = 5V, VBATT = 3.9V
MAX1874 toc16
DC
DCLV
PON
5V/div
5V/div
USB CONNECT WAVEFORMS
VDC = 0, VBATT = 3.9V
MAX1874 toc17
DC STARTUP WAVEFORMS FOR ENABLE
VBATT = 3.9V
MAX1874 toc18
USB 5V/div
EN
PON 5V/div
CHG
1A/div
10V/div
40ms/div
IBATT 500mA/div
DCOK 5V/div
40ms/div
IBATT
500mA/div
UOK
IBATT
10ms/div
_______________________________________________________________________________________ 7
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