Datasheet

ADP1612/ADP1613 Data Sheet
Rev. D | Page 10 of 28
06772-034
T
TIME (400ns/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 20mA
L = 6.8µH
f
SW
= 1.3MHz
C
OUT
= 10µF
OUTPUT VOLTAGE (5V/DIV)
INDUCTOR CURRENT
(200mA/DIV)
SWITCH VOLTAGE (10V/DIV)
Figure 28. ADP1612/ADP1613 Switching Waveform in Discontinuous
Conduction Mode
06772-035
T
TIME (400ns/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 200mA
L = 6.8µH
f
SW
= 1.3MHz
C
OUT
= 10µF
OUTPUT VOLTAGE (5V/DIV)
INDUCTOR CURRENT
(500mA/DIV)
SWITCH VOLTAGE (10V/DIV)
Figure 29. ADP1612/ADP1613 Switching Waveform in Continuous
Conduction Mode
06772-036
T
TIME (20ms/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 250mA
L = 6.8µH
f
SW
= 1.3MHz
OUTPUT VOLTAGE (5V/DIV)
INDUCTOR CURRENT (2A/DIV)
SWITCH VOLTAGE (10V/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 30. ADP1612/ADP1613 Start-Up from V
IN
, C
SS
=33 nF
06772-037
T
TIME (20ms/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 250mA
L = 6.8µH
f
SW
= 1.3MHz
OUTPUT VOLTAGE (5V/DIV)
SWITCH VOLTAGE (10V/DIV)
EN PIN VOLTAGE (5V/DIV)
INDUCTOR CURRENT (2A/DIV)
Figure 31. ADP1612/ADP1613 Start-Up from V
IN
, C
SS
=100 nF
06772-038
T
TIME (400µs/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 250mA
L = 6.8µH
f
SW
= 1.3MHz
OUTPUT VOLTAGE (5V/DIV)
INDUCTOR CURRENT (500mA/DIV)
SWITCH VOLTAGE (10V/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 32. ADP1612/ADP1613 Start-Up from Shutdown, C
SS
= 33 nF
06772-039
T
TIME (400µs/DIV)
V
IN
= 5V
V
OUT
= 12V
I
LOAD
= 250mA
L = 6.8µH
f
SW
= 1.3MHz
OUTPUT VOLTAGE (5V/DIV)
INDUCTOR CURRENT (500mA/DIV)
SWITCH VOLTAGE (10V/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 33. ADP1612/ADP1613 Start-Up from Shutdown, C
SS
= 100 nF