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參數(shù)資料
| 型號(hào)： | RT9231A |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大?。?/td> | 163K |
| 代理商： | RT9231A |
RT9231A
DS9231A-02 July 2001
www.richtek.com
5
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Oscillator
Free Running Frequency
180
200
225
kHz
Ramp Amplitude
V
OSC
--
1.9
--
V
P-P
Linear Regulators (OUT2, OUT3, and OUT4)
VSEN2 Regulation Voltage
SELECT
<
0.8V
1.462 1.500 1.538
V
VSEN2 Regulation Voltage
SELECT
>
2.0V
3.500 3.600 3.700
V
VSEN3 Regulation Voltage
1.455 1.500 1.545
V
VSEN4 Regulation Voltage
1.746 1.800 1.854
V
Under-Voltage Level
(All Linears) (VSEN/VREG)
VSEN3 Rising
--
75
--
%
Under-Voltage Hysteresis
(All Linears) (VSEN/VREG)
VSEN3 Falling
--
100
--
mV
Output Drive Current (All Linears)
VAUX = 5V
20
40
--
mA
Synchronous PWM Controller Error Amplifier
DC Gain
--
65
--
dB
PWM Controller Gate Driver
UGATE Source
R
UGATE
VCC = 12V
VCC-V
UGATE
= 1V
--
4
7
UGATE Sink
R
UGATE
V
UGATE
= 1V
--
3
7
LGATE Source
I
LGATE
VCC = 12V, V
LGATE
= 2V
--
1
--
A
LGATE Sink
R
LGATE
V
LGATE
= 1V
--
2
6
Protection
V
OUT1
Over-Voltage Trip
FAULT Souring Current
VSEN1 Rising
112
115
124
%
V
FAULT
= 8V
10
14
--
mA
OCSET1 Current Source
I
OCSET
V
OCSET1
= 4.5V
170
200
230
μ
A
Soft-Start Current
I
SS
V
SS
= 1V
--
28
--
μ
A
Power Good
V
OUT1
Upper Threshold
VSEN1 Rising
108
--
112
%
V
OUT1
Under Voltage
VSEN1 Rising
87
--
95
%
V
OUT1
Hysteresis (VSEN1/DACOUT)
PGOOD Voltage Low
Upper/Lower Threshold
--
2
--
%
V
PGOOD
I
PGOOD
= -4mA
--
--
0.5
V
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