MAX1940 查看數據表（PDF） - Maxim Integrated
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MAX1940 Datasheet PDF : 13 Pages
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Triple USB Switch with Autoreset and
Fault Blanking
Typical Operating Characteristics (continued)
(Circuit of Figure 2, VIN_ = 5V, CIN_ = 0.1µF, COUT_ = 1µF, ON_ = SEL, TA = +25°C, unless otherwise noted.)
STARTUP TIME
COUT = 1µF
MAX1940 toc19
VSEL = 5V, ROUT_ = 10Ω, COUT_ = 1µF
5V
A
B
5V
5V
C
D
400µs/div
A: VON_ 5V/div C: VOUT_ 5V/div
B: VFAULT_ 5V/div D: IOUT_ 500mA/div
500mA
STARTUP TIME
COUT = 100µF
MAX1940 toc21
VSEL = 5V, ROUT_ = 10Ω, COUT_ = 100µF
5V
A
B
5V
5V
C
D
1ms/div
A: VON_ 5V/div C: VOUT_ 2V/div
B: VFAULT_ 5V/div D: IOUT_ 500mA/div
500mA
STARTUP TIME
COUT = 330µF
MAX1940 toc20
VSEL = 5V, ROUT_ = 10Ω, COUT_ = 330µF
5V
A
B
5V
C
D
1ms/div
A: VON_ 5V/div C: VOUT_ 5V/div
B: VFAULT_ 5V/div D: IOUT_ 500mA/div
0
500mA
UNDERVOLTAGE LOCKOUT RESPONSE
MAX1940 toc22
ROUT_ = 10Ω, COUT_ = 1µF
A
0
B
0
C
0
A: VIN_ 5V/div
B: VOUT_ 5V/div
10ms/div
C: VFAULT_ 5V/div
6 _______________________________________________________________________________________
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