MAX1774EMJ(2002) 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
比赛名单
MAX1774EMJ
(Rev.:2002)
(Rev.:2002)
Maxim Integrated
MAX1774EMJ Datasheet PDF : 21 Pages
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Dual, High-Efficiency, Step-Down
Converter with Backup Battery Switchover
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = +5V, VINC = +3.3V, TA = +25°C, unless otherwise noted.)
CORE SWITCHING WAVEFORMS
(LIGHT LOAD 50mA)
MAX1774-08
3.3V
0
LX
2V/div
CORE SWITCHING WAVEFORMS
(HEAVY LOAD 500mA)
4V MAX1774-09
2V
LXC
0
2V/div
500mA
IL2
0 500mA/div
VCORE
(AC-COUPLED)
20mV/div
20mV
0
VCORE
(AC-COUPLED)
-20mV 20mV/div
500mA L2
0
500mA/div
1µs/div
2µs/div
MAIN LINE-TRANSIENT RESPONSE
MAX1774-10
12V
10V VIN
5V/div
5V
0
50mV VMAIN
(AC-COUPLED)
50mV/div
-50mV
100µs/div
MAIN LOAD-TRANSIENT RESPONSE
MAX1774-12 1000mA
500mA
IMAIN
0
500mA/div
20mV
0
VMAIN
(AC-COUPLED)
-20mV 20mV/div
100µs/div
CORE LINE-TRANSIENT RESPONSE
MAX1774-11
4V
VINC
2V 2V/div
0
VCORE
(AC-COUPLED)
50mV/div
1µs/div
MAIN LOAD-TRANSIENT RESPONSE
50mA TO 500mA
MAX1774-13
500mA IMAIN
0
500mA/div
100µs/div
10mV
0
-10mV
VMAIN
(AC-COUPLED)
10mV/div
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