rt9238 ETC-unknow, rt9238 Datasheet - Page 6

• Manufacturer Part Number: rt9238
• Description: Vrm 8.5 Pwm And Triple Linear Power System Controller
• Manufacturer: ETC-unknow

RT9238
www.richtek-ic.com.tw
6
Under-Voltage Level
Linear Regulators (V
VSEN3,4 Voltage Regulation
VSEN2 Regulation Voltage
VSEN3 Regulation Voltage
VSEN3 Bias Current
VSEN4 Regulation Voltage
VSEN4 Bias Current
Under-Voltage Hysteresis
Output Drive Current (All Linears)
Synchronous PWM Controller Error Amplifier
DC Gain
PWM Controller Gate Driver
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
Protection
V
FAULT Souring Current
OCSET1 Current Source
Soft-Start Current
Power Good
V
V
V
VTTPG Upper Threshold
VTTPG Delay Threshold
VTTPG Voltage Low
PGOOD Voltage Low
(All Linears) (VSEN/VREG)
(All Linears) (VSEN/VREG)
OUT1
OUT1
OUT1
OUT1
Over-Voltage Trip
Upper Threshold
Under Voltage
Hysteresis (FB1/DACOUT)
Parameter
OUT2
, V
OUT3
, and V
V
V
V
IB
V
IB
R
R
I
R
I
I
V
V
LGATE1
OCSET
SS13,24
Symbol
REG2,3,4
REG2
REG3
REG4
VTTPG
PGOOD
UGATE1
UGATE1
LGATE1
VSEN3
VSEN4
OUT4
)
Preliminary
FIX = 0V
FIX = open
FIX = open
FIX = open
FIX = open
VSEN3,4 Rising
VSEN3,4 Falling
VAUX – V
VCC = 12V
VCC-V
V
VCC = 12V, V
V
FB1 Rising
V
V
V
FB1 Rising
FB1 Rising
Upper/Lower Threshold
VSEN2 Rising
SS13 Rising
I
I
VTTPG
PGOOD
UGATE1
LGATE1
FAULT
OCSET1
SS13,SS24
UGATE1
= -4mA
= 8V
= -4mA
Test Conditions
= 1V
= 1V
= 4.5V
DRIVER2,3,4
= 2V
LGATE1
= 1V
= 2V
> 0.6V
1.240 1.265 1.290
1.180 1.200 1.240
1.455 1.500 1.545
1.746 1.800 1.854
Min
112
170
108
20
87
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5
1.08
1.25
Typ
DS9238-01 July 2001
260
350
100
118
200
75
40
65
10
28
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4
3
1
2
2
Max
125
230
112
0.5
0.5
92
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7
7
6
Units
mV
mA
mA
µA
µA
µA
µA
dB
%
%
%
%
%
Ω
Ω
Ω
V
V
V
V
A
V
V
V
V