RT7262A Datasheet, PDF (8/17 Pages) Richtek Technology Corporation – 2A, 21V 500kHz Synchronous Step-Down Converter

RT7262A
Typical Operating Characteristics
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs. Output Current
VIN = 12V
VIN = 21V
VOUT = 1.22V, IOUT = 0A to 2A
0.25 0.5 0.75 1 1.25 1.5 1.75 2
Output Current (A)
Reference Voltage vs. Temperature
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
-50 -25
0
25 50 75
Temperature (°C)
100 125
Switching Frequency vs. Input Voltage
550
525
500
475
450
425
VOUT = 1.22V
400
4 6 8 10 12 14 16 18 20 22
Input Voltage (V)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
8
Reference Voltage vs. Input Voltage
0.825
0.820
0.815
0.810
0.805
0.800
0.795
0.790
0.785
4 6 8 10 12 14 16 18 20 22
Input Voltage (V)
Output Voltage vs. Output Current
1.26
1.25
1.24
1.23
1.22
1.21
VIN = 21V
VIN = 12V
1.20
1.19
1.18
0
VOUT = 1.22V, IOUT = 0A to 2A
0.25 0.5 0.75 1 1.25 1.5 1.75 2
Output Current (A)
Switching Frequency vs. Temperature
650
600
550
500
450
400
350
300
-50 -25
VIN = 12V, VOUT = 1.22V
0
25 50 75
Temperature (°C)
100 125
is a registered trademark of Richtek Technology Corporation.
DS7262A-01 September 2012