Datasheet

ADP2121
Rev. B | Page 12 of 20
07407-056
TIME (10µs/DIV)
EN PIN VOLTAGE (5V/DIV)
V
IN
= 3.6V
V
OUT
= 1.8V
NO LOAD
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
Figure 40. Start-Up Waveform, No Load
07407-018
V
IN
= 3.6V
V
OUT
= 1.82V
NO LOAD
TIME (40µs/DIV)
OUTPUT VOLTAGE (500mV/DIV)
ENABLE PIN VOLTAGE (5V/DIV)
INDUCTOR CURRENT (200mA/DIV)
Figure 41. Start-Up Waveform, No Load
TIME (10μs/DIV)
07407-057
V
IN
= 3.6V
V
OUT
= 2.3V
NOLOAD
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 42. Start-Up Waveform, No Load
TIME (10μs/DIV)
07407-058
V
IN
= 3.6V
V
OUT
= 1.8V
R
LOAD
= 5.1Ω
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 43. Start-Up Waveform, Heavy Load
07407-021
V
IN
= 3.6V
V
OUT
= 1.82V
R
LOAD
= 5.1Ω
TIME (40µs/DIV)
OUTPUT VOLTAGE (500mV/DIV)
ENABLE PIN VOLTAGE (5V/DIV)
INDUCTOR CURRENT (200mA/DIV)
Figure 44. Start-Up Waveform, Heavy Load
TIME (10μs/DIV)
07407-059
V
IN
= 3.6V
V
OUT
= 2.3V
R
LOAD
= 5.1Ω
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 45. Start-Up Waveform, Heavy Load