MAX4959EUB 查看數據表（PDF） - Maxim Integrated
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MAX4959EUB Datasheet PDF : 17 Pages
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High-Voltage OVP with Battery Switchover
Typical Operating Characteristics (continued)
(VOVLO = 22.2V and VUVLO = 10.1V, R1 = 887kΩ, R2 = 66.5kΩ, R3 = 54.9kΩ, all resistors 1%, OVREF = UVREF = 1.228V.)
LOW-POWER ADAPTER RESPONSE
(VOVLO = 22.3V, VUVLO = 10.1V, pFET = IRF7726)
13
BATTERY SWITCHOVER WITH ADAPTER-
PLUGGED RESPONSE
(VIN = 19V, VGATE2-PULLUP = 4.2V, RPULLUP = 5kΩ)
25
11
9
VIN
7
5
3
LOAD BECOMES
1 PRESENT
VGATE1
DRAIN OF P1
20
VGATE1
15
VGATE2
10
CB
5
0
-1
0 .05 0.1 0.15 0.2 0.25 0.3
TIME (s)
-5
-150 -100 -50 0 50 100 150
TIME (μs)
OVERVOLTAGE AND UNDERVOLTAGE TRIP
DIFFERENCE vs. TEMPERATURE
(RPULLUP = 1kΩ)
5
4
3
2
UV TRIP DIFF
1
0
-1
-2
OV TRIP DIFF
-3
-4
-5
-50 -30 -10 10 30 50 70 90
TEMPERATURE (°C)
SUPPLY CURRENT vs. INPUT VOLTAGE
200
160
120
80
40
0
-40
0
5 10 15 20 25
VIN (V)
LOGIC-INPUT THRESHOLD vs. TEMPERATURE
2
1.8
1.6
1.4
VTH-HI
1.2
1
0.8
VTH-LO
0.6
0.4
0.2
0
-50 -30 -10 10 30 50 70 90
TEMPERATURE (°C)
VDD SUPPLY CURRENT vs. TEMPERATURE
5
4.5
4
3.5
-50 -30 -10 10 30 50 70
TEMPERATURE (°C)
90 110
VOLTAGE RANGE vs. INPUT VOLTAGE RANGE
6
5
4
3
2
1
0
0
5 10 15 20 25
VIN (V)
4 _______________________________________________________________________________________
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