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ADP2121 Datasheet(PDF) 12 Page - Analog Devices

Part # ADP2121
Description  600 mA, 6 MHz, Synchronous Step-Down DC-to-DC Converter
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP2121 Datasheet(HTML) 12 Page - Analog Devices

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ADP2121
Rev. B | Page 12 of 20
TIME (10µs/DIV)
EN PIN VOLTAGE (5V/DIV)
VIN = 3.6V
VOUT = 1.8V
NO LOAD
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
Figure 40. Start-Up Waveform, No Load
VIN = 3.6V
VOUT = 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)
VIN = 3.6V
VOUT = 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)
VIN = 3.6V
VOUT = 1.8V
RLOAD = 5.1Ω
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 43. Start-Up Waveform, Heavy Load
VIN = 3.6V
VOUT = 1.82V
RLOAD = 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)
VIN = 3.6V
VOUT = 2.3V
RLOAD = 5.1Ω
OUTPUT VOLTAGE
(500mV/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
EN PIN VOLTAGE (5V/DIV)
Figure 45. Start-Up Waveform, Heavy Load



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