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RT9008GE

P1-P3P4-P6P7-P9
RT9008
4
DS9008-01 April 2011www.richtek.com
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2. θ
JA
is measured in the natural convection at T
A
= 25°C on a low effective thermal conductivity single layer test board of
JEDEC 51-3 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
RT9008
5
DS9008-01 April 2011 www.richtek.com
Typical Operating Characteristics
DRI Sink Current vs. Temperature
12
15
18
21
24
27
30
-50 -25 0 25 50 75 100 125
Temperature
DRI Sink Current (mA)
V
FB
= 1V, V
CC
= 12V, V
DRI
= 6V
(°C)
DRI Source Current vs. Temperature
35
40
45
50
55
60
-50 -25 0 25 50 75 100 125
Temperature
DRI Source Current (mA)
V
FB
= 0.6V, V
CC
= 12V, V
DRI
= 6V
(°C)
Quiescent Current vs. Temperature
0.00
0.10
0.20
0.30
0.40
0.50
0.60
-50 -25 0 25 50 75 100 125
Temperature
Quiescent Current (mA)
V
IN
= 1.5V, V
CC
= 12V
(°C)
Feedback Voltage vs. Temperature
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
-50 -25 0 25 50 75 100 125
Temperature
Feedback Voltage (V)
V
IN
= 1.5V, V
CC
= 12V
(°C)
Sink Current vs. DRI Voltage
0
5
10
15
20
25
0 0.5 1 1.5 2 2.5 3
DRI Voltage (V)
Sink Current (mA
)
Refer to Test Circuit Figure 2
V
FB
= 1V, V
CC
= 12V V
FB
= 0.6V, V
CC
= 12V
Source Current vs. DRI Voltage
0
10
20
30
40
50
024681012
DRI Voltage (V)
Source Current (mA)
RT9008
6
DS9008-01 April 2011www.richtek.com
0
10
-10
1.5
2.5
Time (100μs/Div)
Line Transient Response
V
OUT
(mV/Div)
V
IN
(V/Div)
V
IN
= 1.5V to 2.5V, I
LOAD
= 100mA
C
IN
= 2.2μF, C
OUT
= 100μF
0
20
-20
0
5
Time (250μs/Div)
Load Transient Response
V
OUT
(mV/Div)
I
LOAD
(A/Div)
V
IN
= 2.5V, V
OUT
= 1.2V, C
IN
= C
OUT
= 100μF
Time (1ms/Div)
Power Off from EN
V
EN
(5V/Div)
V
OUT
(500mV/Div)
V
IN
= 5V, V
OUT
= 1.2V, I
LOAD
= 80mA
Soft Start Time vs. C
SS
0
1000
2000
3000
4000
5000
0 4 8 12 16 20 24
C
SS
(nF)
Soft Start Time (us)
EN Threshold Voltage vs. Temperature
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
-50 -25 0 25 50 75 100 125
Temperature
EN Threshold Voltage (V)
Rising
Falling
(°C)
Time (500μs/Div)
Power On from EN
V
EN
(5V/Div)
V
OUT
(500mV/Div)
V
IN
= 5V, V
OUT
= 1.2V, I
LOAD
= 80mA
P1-P3P4-P6P7-P9

RT9008GE

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Description:
IC LNR REG CTRLR SOT23-6
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