Datasheet

MAX1693/(MAX1693H)/MAX1694
USB Current-Limited Switches
with Fault Blanking
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(V
IN
= +5V, T
A
= +25°C, unless otherwise noted.)
4
3
1
2
2ms/div
MAX1693/4 toc10
MAX1693
CURRENT-LIMIT AND FAULT RESPONSE
CH1 = V
IN
, 200mV/div, AC-COUPLED; CH2 = V
OUT
,
5V/div; CH3 = V
FAULT
, 5V/div; CH4 = I
OUT
, 500mA/div
4
10
µ
s/div
3
1
2
MAX1693
CURRENT-LIMIT RESPONSE
MAX1693/4 toc11
CH1 = V
IN
, 200mV/div, AC-COUPLED; CH2 = V
OUT
,
5V/div; CH3 = V
FAULT
, 5V/div; CH4 = I
OUT
, 1A/div
4
3
2
1
MAX1693
SWITCH TURN-ON TIME
MAX1693/4 toc12
CH1 = V
OUT
, 5V/div; CH2 = V
ON
, 5V/div;
CH3 = V
FAULT
, 5V/div; CH4 = I
OUT
, 200mA/div
20µs/div
0
2
6
4
10
8
12
-40 0 20-20 406080100
FAULT-BLANKING TIMEOUT
vs. TEMPERATURE
MAX1693/4 toc09
TEMPERATURE (°C)
FAULT-BLANKING TIMEOUT (ms)
I
OUT
= 850mA
V
IN
= 3V OR 5V
4
3
2
1
MAX1693
SWITCH TURN-OFF TIME
MAX1693/4 toc13
CH1 = V
OUT
, 5V/div; CH2 = V
ON
, 5V/div;
CH3 = V
FAULT
, 5V/div; CH4 = I
OUT
, 200mA/div
1µs/div
4
3
2
1
MAX1693
STARTUP TIME
(TYPICAL USB APPLICATION)
MAX1693/4 toc14
CH1 = V
OUT
, 5V/div; CH2 = V
ON
, 5V/div;
CH3 = I
OUT
, 500mA/div; CH4 = V
FAULT
, 5V/div
C
L
= 150µF
R
L
= 15Ω
1ms/div
FULL-CURRENT LIMIT
CHARGES CAPACITOR
RESISTOR
LOAD
CURRENT
FOLDBACK-
CURRENT LIMIT