APL3514 Datasheet, PDF (9/21 Pages) Anpec Electronics Coropration – Power-Distribution Switches with Soft Start

APL3512
Operating Waveforms (Cont.)
The test condition is V_IN=5V, T_A= 25^oC unless otherwise specified.
Soft Start Ramp-up Control
V_{E N}
1
C =820pF
C_SS=560pF ^{S S}
C =330pF
SS
C_{S S}=unconnected
or SS tied to V _IN
C_{S S}=5.6nF
2
V_OUT
C =4.4nF
C =2.2nF ^{CSS=3.3nF SS}
SS
V_IN =5V R_LOAD =30Ω, C_IN =1µF/MLCC,
C_OUT=33µF/Electrolytic
CH1: V_EN, 5V/Div, DC
CH2: V_OUT, 2V/Div, DC
TIME: 0.5ms/Div
Current Limit Response
V _IN
V
OUT
1
2
I_OUT
3
V_IN =5V, C_IN =1µF/MLCC,
C_OUT=33µF/Electrolytic
CH1: V_IN, 2V/Div, DC
CH2: V_OUT, 2V/Div, DC
CH3: I_OUT, 1A/Div, DC
TIME: 2ms/Div
Short Circuit Protection
V_IN
V
OUT
1
2
I
OUT
3
V_IN =5V, VOUT short to ground,
C_IN =1µF/MLCC, C_OUT=33µF/Electrolytic
CH1: V_IN, 2V/Div, DC
CH2: V_OUT, 2V/Div, DC
CH3: I_OUT, 20A/Div, DC
TIME: 100µs/Div
Copyright © ANPEC Electronics Corp.
9
Rev. A.6 - Aug., 2012
www.anpec.com.tw