ISL6185 Datasheet, PDF (14/20 Pages) Intersil Corporation – Dual USB Port Power Supply Controller

ISL6185
Typical Performance Curves (Continued)
I_IN
ENABLE
V_OUT
I_IN
LIMITED TO 1.7A
CH1 ON
(1.8A)
FAULT
1.8A I_CONT VARIANT
ENABLE
V_OUT
CH1 and CH2 ON
(3.6A TOTAL I_IN)
FAULT
1.8A ICONT VARIANT
FIGURE 23. TURN-ON INTO A SHORT
V_OUT
FLT
I_IN
FIGURE 24. TURN-ON 2ND OUTPUT TO FULL LOAD
1.1A I_CONT VARIANT
FLT
V_OUT
I_IN
FIGURE 25. ISL6185 RETRY FUNCTION
FIGURE 26. I_LIM WAVEFORM
FIGURE 26. PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
Test Circuits
10k
+V -
10k
FLT
5V
VIN
OUT
OUTPUT
ISL6185
10µF
EN
10
FLT
OUTPUT
5V
VIN
OUT
R_L sized
ISL6185
10µF
for desired
EN
OC level
10
R_L
r_DS(ON) = V/(VOUT/10Ω)
FIGURE 27A. r_DS(ON)
FIGURE 27B. CURRENT LIMITING
FIGURE 27. DC TEST CIRCUIT
14
FN6937.0
October 22, 2010