RT9229 データシートの表示（PDF） - Richtek Technology
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RT9229 Datasheet PDF : 10 Pages
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RT9229
Function Block Diagram
FB3
GATE3
VOUT2
FB4
UGATE2
PHASE2
FB2
VSEN2
OCSET2
VSEN1
OCSET1
VCC
_
VSEN2
0.3V
LIN EA R
UN DE R
VOLTAGE
LUV
1.26V
_
0.25V
VCC
OC4
OC2
GATE
INHIBIT
PWM2
CONTROL
_
PWM
COMPEN- COMP2
SATION
200µA
OC
SOFT-START
& FAULT
LOGIC
1.26V
ERROR
AMP2
110%
90%
115%
200µA
POWER-ON
RESET (POR)
UPPER
DR IVE
VCC
0V
OC1 _
INHIBIT
GATE
PWM1
CONTROL
LOGIC
ERROR
AMP1
PWM
COMP1
LOWER
DR IVE
VCC
2.5V
4.3V
OSCILLATOR
VCC
11µA
5V
DACOUT
COMPEN-
SATION
TTL D/A
CONVERTER
(DAC)
FAULT
SS
FB1
VID0 VID2 VID4
VID1 VID3
PGOOD
UGATE1
PHASE1
LGATE1
PGND
GND
www.richtek-ic.com.tw
4
DS9229-03 July 2001
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