MAX1940(2002) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1940 Datasheet PDF : 12 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.)
FAULT OUTPUT LOW VOLTAGE
vs. TEMPERATURE
250
240 RPU = 4.7kΩ
230
220
210 VIN_ = 5.5V
VIN_ = 5V
200
190
180
170
160
150
VIN_ = 4.5V
140
130
120
110
100
-40 -15
10
35
60
85
TEMPERATURE (°C)
OVERLOAD RESPONSE INTO 2.5Ω
MAX1940 toc13
A
5V
AUTORESET CURRENT
vs. TEMPERATURE
38
36
34
VIN_ = 5.5V
32
VIN_ = 5V
30
28
26
24
22
20
VIN_ = 4.5V
18
-40 -15
10
35
60
85
TEMPERATURE (°C)
OVERLOAD RESPONSE INTO 2.5Ω
(EXPANDED TIME SCALE)
MAX1940 toc14
A
5V
AUTORESET CURRENT
vs. INPUT VOLTAGE
40
35
TA = +25°C
30
TA = -40°C
25
20
15
TA = +85°C
10
5
0
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
INPUT VOLTAGE (V)
SHORT-CIRCUIT RESPONSE INTO 0Ω
MAX1940 toc15
A
5V
B
0
C
0
D
0
10ms/div
A: VIN_ 5V/div C: VFAULT_ 5V/div
B: VOUT_ 5V/div D: IOUT_ 1A/div
SHORT-CIRCUIT RESPONSE INTO 0Ω
(EXPANDED TIME SCALE)
MAX1940 toc16
A
5V
B
0
C
5V
B
0
C
5V
D
0
400µs/div
A: VIN_ 5V/div C: VFAULT_ 5V/div
B: VOUT_ 5V/div D: IOUT_ 1A/div
SWITCH TURN-ON TIME (tON + tRISE)
MAX1940 toc17
VSEL = 5V
ROUT_ = 10Ω
COUT_ = 1µF
A
5V
5V
B
5V
B
C
5V
D
0
10ms/div
A: VIN_ 5V/div C: VFAULT_ 5V/div
B: VOUT_ 5V/div D: IOUT_ 1A/div
SWITCH TURN-ON TIME (tON + tFALL)
MAX1940 toc18
VSEL = 5V
ROUT_ = 10Ω
COUT_ = 1µF
5V
A
B
D
0
400µs/div
A: VIN_ 5V/div C: VFAULT_ 5V/div
B: VOUT_ 5V/div D: IIN_ 2A/div
A: VON_ 5V/div
B: VOUT_ 2V/div
1ms/div
0
A: VON_ 5V/div
B: VOUT_ 2V/div
1ms/div
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