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RT9218BGS Datasheet(PDF) 4 Page - Richtek Technology Corporation

Part # RT9218BGS
Description  12V Synchronous Buck PWM DC-DC and Linear Power Controller
PDF  17 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9218BGS Datasheet(HTML) 4 Page - Richtek Technology Corporation

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RT9218B
4
DS9218B-09 March 2007
www.richtek.com
Timing Diagram
Specific Power Sequence for LDO
90%
80%
1-10ms
<1ms
FSB_VTT (1.2V @ 5Amp)
VTT_GD
Function Block Diagram
Gate Control
Logic
Oscillator
(300k/600kHz)
EO
UV_L
GM
0.6V
DRV
GND
UGATE
OPS
LGATE
FBL
PGOOD
BOOT
FB
PHASE
VCC
+
-
+
-
Soft-Start
&
Fault Logic
UV_S
+
-
0.6V
+
-
+
-
VCC
0.8V
REF
Power On
Reset
Reference
Bias & Regulators
(3V_Logic & 3VDD_Analog)
1.5V
0.15V
+
-
PH_M
+
-
EN
+
+
-
+
OC
3V
0.4V
40uA
+
-
VCC



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