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RT8105GS Datasheet(PDF) 6 Page - Richtek Technology Corporation

Part # RT8105GS
Description  5V/12V Synchronous Buck PWM DC/DC Controller
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8105GS Datasheet(HTML) 6 Page - Richtek Technology Corporation

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6
RT8105
www.richtek.com
DS8105-03 April 2011
Typical Operating Characteristics
Power On from VIN
Time (2ms/Div)
VOUT
(1V/Div)
UGATE
(20V/Div)
VIN = VCC = 12V, VOUT = 1.5V, ILOAD = 20A
VIN
(5V/Div)
LGATE
(20V/Div)
Disable from OPS
Time (40
μs/Div)
VOUT
(1V/Div)
UGATE
(20V/Div)
VIN = VCC = 12V, VOUT = 1.5V, ILOAD = 5A
OPS
(2V/Div)
LGATE
(20V/Div)
Enable from OPS
Time (2ms/Div)
VOUT
(1V/Div)
UGATE
(20V/Div)
VIN = VCC = 12V, VOUT = 1.5V, ILOAD = 5A
OPS
(2V/Div)
LGATE
(20V/Div)
Over Voltage Protection
Time (20
μs/Div)
UGATE
(10V/Div)
VIN = 5V, VCC = 12V, VOUT = 1.5V, No Load
FB
(500mV/Div)
LGATE
(10V/Div)
Under Voltage Protection
Time (20
μs/Div)
UGATE
(10V/Div)
VIN = 5V, VCC = 12V, VOUT = 1.5V, No Load
FB
(500mV/Div)
LGATE
(10V/Div)
VIN and VCC Power Sequence
Time (2ms/Div)
VOUT
(1V/Div)
UGATE
(20V/Div)
VIN = VCC = 12V, VOUT = 1.5V, ILOAD = 20A
VCC
(10V/Div)
VIN
(5V/Div)
VIN comes after VCC



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