RT9269CE View Datasheet(PDF) - Richtek Technology
Part Name
Description
Manufacturer
RT9269CE Datasheet PDF : 10 Pages
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Preliminary
Typical Operating Characteristics
RT9269
Efficiency vs. Input Voltage
89
4 LEDs, L = 47 µH
87
85
IOUT = 20 mA
83
IOUT = 15 mA
81
79
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Efficiency vs. Vin
85
6 LEDs, L = 33 µH
84
83
82
IOUT = 20mA
81
80
IOUT = 15mA
79
3
3.5
4
4.5
5
5.5
6
VIN(V)
600
500
400
300
200
100
0
0
Frequency vs. VDD
FB = GND, TA = 25°C
1
2
3
4
5
6
VDD (V)
Efficiency vs. Input Voltage
100
90
IOUT = 20mA @ VIN > 3.8V
80
70 IOUT = 15mA @ VIN > 3.6V
60
Refer to Application Circuit Fig. 2
50
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
VFB vs. Ambient Temperature
256
254
252
250
248
246
244
-40
-20
0
20
40
60
80
Ambient Temperature (°C)
Efficiency vs. Output Current
100
90
80
70
VIN = 4.2V
60
50
VIN = 2.7V
VIN = 3.6V
40
30
20
0.1
1
10
100
Output Current (mA)
DS9269-01 March 2003
www.richtek.com
5
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