New prod uc t ap7176b, Operating waveforms, Ap7176b – Diodes AP7176B User Manual
Page 8: Enable, Shutdown, Over current protection, Load transient response, Power off, Power on
AP7176B
Document number: DS35818 Rev.3 - 2
8 of 14
April 2014
© Diodes Incorporated
NEW PROD
UC
T
AP7176B
Operating Waveforms
(Test Conditions V
IN
= 1.8V, V
CNTL
= 5V, V
OUT
1.2V, T
A
= +25°C unless otherwise specified.)
Enable
C
OUT
= 10µF, C
IN
= 10µF, R
L
= 0.4Ω
CH1: V
EN
, 5V/Div, DC
CH2: V
OUT
, 1V/Div, DC
CH3: V
PG
, 5V/Div, DC
CH4: I
OUT
, 2A/Div, DC
TIME: 1ms/Div
V
EN
V
OUT
V
PG
I
OUT
Shutdown
C
OUT
= 10µF, C
IN
= 10µF, R
L
= 0.4Ω
CH1: V
EN
, 5V/Div, DC
CH2: V
OUT
, 1V/Div, DC
CH3: V
PG
, 5V/Div, DC
CH4: I
OUT
, 2A/Div, DC
TIME: 4µs/Div
V
EN
V
OUT
V
PG
I
OUT
Over Current Protection
C
OUT
= 10µF, C
IN
= 10µF, I
OUT
= 2A to 5.6A
CH1: V
OUT
, 0.5V/Div, DC
CH4: I
OUT
, 2A/Div, DC
TIME: 0.2ms/Div
V
OUT
I
OUT
Load Transient Response
I
OUT
= 10mA to 3A to10mA (rise / fall time = 1µs)
C
OUT
= 10µF, C
IN
= 10µF
CH2: V
OUT
, 50mV/Div, AC
CH4: I
OUT
, 1A/Div, DC
TIME: 50µs/Div
V
OUT
I
OUT
Power Off
C
OUT
= 10µF, C
IN
=10µF, R
L
= 0.4Ω
CH1: V
CNTL
, 5V/Div, DC
CH2: V
IN
, 1V/Div, DC
CH3: V
OUT
, 1V/Div, DC
CH4: V
PG
, 5V/Div, DC
TIME: 2ms/Div
V
IN
V
CNTL
V
OUT
V
PG
Power On
C
OUT
=10µF, C
IN
=10µF, R
L
= 0.4Ω
CH1: V
CNTL
, 5V/Div, DC
CH2: V
IN
, 1V/Div, DC
CH3: V
OUT
, 1V/Div, DC
CH4: V
PG
, 5V/Div, DC
TIME: 2ms/Div
V
IN
V
CNTL
V
OUT
V
PG