RT8841
Typical Operating Characteristics
Frequency vs. RRT
Output Voltage vs. Temperature
1200
1.324
1.323
1.322
1.321
1.320
1.319
1.318
1.317
1.316
1.315
1.314
1000
800
600
400
200
0
VIN = 12V, IOUT = 0A
0
40
80
120
160
200
240
280
-40 -20
0
20
40
60
80 100 120 140
Temperature
RRT ((kkΩoh)m)
Frequency vs. Temperature
Power On from VTT/EN
380
375
370
365
360
355
350
345
RRT = 30.1kΩ
VOUT
(1V/Div)
VTT/EN
(1V/Div)
PGOOD
(1V/Div)
PHASE
(10V/Div)
VIN = 12V, VOUT = 1.4V, IOUT = 0A
Time (2ms/Div)
-40 -20
0
20
40
60
80 100 120 140
Temperature (°C)
Power Off from VTT/EN
Power On from VIN
VOUT
VOUT
(1V/Div)
(1V/Div)
VTT/EN
(1V/Div)
VIN
(10V/Div)
SS
(2V/Div)
PGOOD
(2V/Div)
PHASE
PHASE
(10V/Div)
(10V/Div)
VIN = 12V, VOUT = 1.4V, IOUT = 0A
Time (40us/Div)
VIN = 12V, VOUT = 1.4V, IOUT = 0A
Time (4ms/Div)
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22
DS8841-01 April 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
