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RT9270GF Datasheet(PDF) 8 Page - Richtek Technology Corporation

Part # RT9270GF
Description  High Performance, Low Noise Boost Converter
Download  13 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9270GF Datasheet(HTML) 8 Page - Richtek Technology Corporation

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RT9270
Preliminary
8
DS9270-09 March 2007
www.richtek.com
Load
Current
(200mA/Div)
Output
Voltage
AC-Coupled
(200mV/Div)
Load-Transient Response
Time (100us/Div)
Inductor
Current
(1A/Div)
VIN = 3.3V, VOUT = 12V
fOSC = 670kHz, L = 4.7uH, COUT = 33uF+0.1uF
R3 = 47k
Ω
C3 = 1000pF
C4 = 22pF
Output
Voltage
AC-Coupled
(200mA/Div)
Load-Transient Response
Time (100us/Div)
Load
Current
(500mA/Div)
Inductor
Current
(1A/Div)
fOSC = 670kHz, L = 4.7uH ,COUT = 47uF+0.1uF
R3 = 22k
Ω
C3 = 820pF
C4 = 56pF
VIN = 3.3V, VOUT = 7.2V
Output
Voltage
(5V/Div)
Startup Waveform Without Soft-Start
Time (200us/Div)
Inductor
Current
(1A/Div)
fOSC = 670kHz, NO Soft-Start Capacitor
VIN= 3.3V, VOUT= 12V, IOUT= 10mA
EN
(2V/Div)
Output
Voltage
(5V/Div)
EN
(2V/Div)
Startup Waveform With Soft-Start
Time (1ms/Div)
Inductor
Current
(500mA/Div) fOSC = 670kHz, CSS = 0.027uF
VIN = 3.3V, VOUT= 12V, IOUT= 10mA
Time (1ms/Div)
Output
Voltage
(5V/Div)
Inductor
Current
(500mA/Div)
fOSC = 670kHz, CSS = 0.027uF
VIN = 3.3V, VOUT= 12V, IOUT= 100mA
EN
(2V/Div)
Startup Waveform With Soft-Start
Switching Waveform
Time (400ns/Div)
Output
Voltage
AC-Coupled
(200mV/Div)
Inductor
Current
(1A/Div)
fOSC = 670kHz, L = 10uH, COUT = 33uF+0.1uF
VIN = 3.3V, VOUT= 12V, IOUT= 200mA
LX Switching
Waveform
(5V/Div)


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