RT9238 Просмотр технического описания (PDF) - Richtek Technology
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RT9238 Datasheet PDF : 24 Pages
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RT9238
Preliminary
Parameter
Symbol
Test Conditions
Linear Regulators (VOUT2, VOUT3, and VOUT4)
VSEN3,4 Voltage Regulation
VREG2,3,4 FIX = 0V
VSEN2 Regulation Voltage
VREG2
VSEN3 Regulation Voltage
VREG3 FIX = open
VSEN3 Bias Current
IBVSEN3 FIX = open
VSEN4 Regulation Voltage
VREG4 FIX = open
VSEN4 Bias Current
IBVSEN4 FIX = open
Under-Voltage Level
(All Linears) (VSEN/VREG)
VSEN3,4 Rising
Under-Voltage Hysteresis
(All Linears) (VSEN/VREG)
VSEN3,4 Falling
Output Drive Current (All Linears)
VAUX – VDRIVER2,3,4 > 0.6V
Synchronous PWM Controller Error Amplifier
DC Gain
PWM Controller Gate Driver
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
Protection
RUGATE1
RUGATE1
ILGATE1
RLGATE1
VCC = 12V
VCC-VUGATE1 = 1V
VUGATE1 = 1V
VCC = 12V, VLGATE1 = 2V
VLGATE1 = 1V
VOUT1 Over-Voltage Trip
FAULT Souring Current
OCSET1 Current Source
Soft-Start Current
Power Good
IOCSET
ISS13,24
FB1 Rising
VFAULT = 8V
VOCSET1 = 4.5V
VSS13,SS24 = 2V
VOUT1 Upper Threshold
VOUT1 Under Voltage
VOUT1 Hysteresis (FB1/DACOUT)
VTTPG Upper Threshold
FB1 Rising
FB1 Rising
Upper/Lower Threshold
VSEN2 Rising
VTTPG Delay Threshold
SS13 Rising
VTTPG Voltage Low
PGOOD Voltage Low
VVTTPG
VPGOOD
IVTTPG = -4mA
IPGOOD = -4mA
Min Typ Max Units
1.240 1.265 1.290 V
1.180 1.200 1.240 V
1.455 1.500 1.545 V
-- 260 --
µA
1.746 1.800 1.854 V
-- 350 --
µA
-- 75 --
%
-- 100 -- mV
20 40 -- mA
-- 65
--
dB
--
4
7
Ω
--
3
7
Ω
--
1
--
A
--
2
6
Ω
112 118 125 %
5 10 -- mA
170 200 230 µA
-- 28
--
µA
108 -- 112 %
87
--
92
%
--
2
--
%
-- 1.08 --
V
-- 1.25 --
V
--
-- 0.5
V
--
-- 0.5
V
www.richtek-ic.com.tw
6
DS9238-01 July 2001
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