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RT7263BZQW

P1-P3P4-P6P7-P9P10-P12P13-P15
RT7263B
7
DS7263B-01 September 2012 www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Reference Voltage vs. Temperature
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
-50-25 0 25 50 75100125
Temperature (°C)
Reference Voltage (V)
Reference Voltage vs. Input Voltage
0.580
0.585
0.590
0.595
0.600
0.605
0.610
0.615
0.620
4 6 8 10 12 14 16 18 20 22
Input Voltage (V)
Reference Voltage (V)
Typical Operating Characteristics
Switching Frequency vs. Temperature
300
350
400
450
500
550
600
650
-50 -25 0 25 50 75 100 125
Temperature (°C)
Switching Frequency (kHz) 1
V
IN
= 12V, V
OUT
= 1.2V
Switching Frequency vs. Input Voltage
400
425
450
475
500
525
550
4 6 8 10 12 14 16 18 20 22
Input Voltage (V)
Switching Frequency (kHz) 1
V
OUT
= 1.2V
Output Voltage vs. Output Current
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
00.511.522.53
Output Current (A)
Output Voltage (V)
V
OUT
= 1.2V, I
OUT
= 0A to 3A
V
IN
= 21V
V
IN
= 12V
Efficiency vs. Output Current
0
10
20
30
40
50
60
70
80
90
100
00.511.522.53
Output Current (A)
Efficiency (%)
V
OUT
= 1.2V, I
OUT
= 0A to 3A
V
IN
= 12V
V
IN
= 21V
RT7263B
8
DS7263B-01 September 2012www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Current Limit vs. Input Voltage
0
2
4
6
8
10
12
4 6 8 10 12 14 16 18 20 22
Input Voltage (V)
Current Limit (A)
Current Limit vs. Temperature
0
2
4
6
8
10
12
-50-25 0 25 50 75100125
Temperature (°C)
Current Limit (A)
V
IN
= 12V, V
OUT
= 1.2V
Time (100μs/Div)
Load Transient Response
V
OUT
(500mV/Div)
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 0A to 3A
Time (100μs/Div)
Load Transient Response
V
OUT
(200mV/Div)
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 1A to 3A
Time (1μs/Div)
Output Ripple Voltage
V
OUT
(50mV/Div)
V
SW
(10V/Div)
I
L
(1A/Div)
V
IN
= 12V, I
OUT
= 1A
Time (1μs/Div)
Output Ripple Voltage
V
OUT
(50mV/Div)
V
SW
(10V/Div)
I
L
(2A/Div)
V
IN
= 12V, I
OUT
= 3A
RT7263B
9
DS7263B-01 September 2012 www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Time (50μs/Div)
Power Off from EN
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 3A
V
OUT
(1V/Div)
V
EN
(5V/Div)
I
L
(5A/Div)
V
SW
(20V/Div)
Time (2.5ms/Div)
Power On from EN
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 3A
V
OUT
(1V/Div)
V
EN
(5V/Div)
I
L
(5A/Div)
V
SW
(20V/Div)
Time (25ms/Div)
Power Off from VIN
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 3A
V
OUT
(1V/Div)
V
IN
(10V/Div)
I
L
(5A/Div)
V
SW
(20V/Div)
Time (5ms/Div)
Power On from VIN
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 3A
V
OUT
(1V/Div)
V
IN
(10V/Div)
I
L
(5A/Div)
V
SW
(20V/Div)
P1-P3P4-P6P7-P9P10-P12P13-P15

RT7263BZQW

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IC REG BUCK ADJUSTABLE 3A 14WDFN
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