RT9224B Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Lista de partido
RT9224B
Richtek Technology
RT9224B Datasheet PDF : 8 Pages
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Parameter
Protection
Over-voltage Trip (VSEN/DACOUT)
OCSET Current Source
OVP Sourcing Current
Soft-Start Current
Power Good
Upper Threshold (VSEN/DACOUT)
Lower Threshold (VSEN/DACOUT)
Hysteresis (VSEN/DACOUT)
PGOOD Voltage Low
Preliminary
Symbol
Test Conditions
RT9224B
Min Typ Max Units
IOCSET
IOVP
ISS
VOCSET = 4.5V
VSEN = 5.5V, VOVP = 0V
VSS = 1.5V
--
115 120
%
167 200 233 µA
60
--
--
mA
--
10
--
µA
VSEN Rising
106
--
114
%
VSEN Falling
89
--
96
%
Upper and Lower Threshold --
2
--
%
VPGOOD ICPGOOD = -5mA
--
0.5
--
V
Function Block Diagram
VSEN
110%
90%
VCC
POWER-ON
RESET (POR)
PGOOD
OCSET
VID0
VID1
VID2
VID3
VID25
FB
115%
OVER-
VOLTAGE
REFERENCE
200µA
OVER-
CURRENT
SOFT-
START
4.5V
10µA
TTL D/A
CONVERTER
(DAC)
DACOUT
ERROR
AMP
INHIBIT
PWM
COMPARATOR
GATE
CONTROL
LOGIC
PWM
OSCILLATOR
OVP
SS
BOOT
UGATE
PHASE
LGATE
PGND
GND
DS9224B-01 May 2001
www.richtek-ic.com.tw
3
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