rt9201 Richtek Technology Corporation, rt9201 Datasheet - Page 7

• Manufacturer Part Number: rt9201
• Description: High Efficiency Step-down Dc-dc Converter
• Manufacturer: Richtek Technology Corporation

DS9201-04 August 2004
1.90
1.88
1.86
1.84
1.82
1.80
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
300
250
200
150
100
50
0
2.5
0
2
Minimum On-Time vs. Input Voltage
Output Voltage vs. Output Current
100
2.5
Current Limit vs. Input Voltage
3
200
3
3.5
Output Current (mA)
Input Voltage (V)
Input Voltage (V)
300
3.5
4
400
4
4.5
500
4.5
5
600
V
V
5
V
V
IN
OUT
OUT
OUT
= 3.3V
5.5
= 1.8V
700
5.5
= 1.3V
= 1.8V
Preliminary
800
6
6
V
(mV)
(mA)
I
OUT
OUT
3.45
3.43
3.40
3.38
3.35
3.33
3.30
3.28
3.25
300
250
200
150
100
-100
50
100
500
0
-50
0
0
0
V
I
OUT
Output Voltage vs. Output Current
Minimum On-Time vs. Temperature
IN
100
-25
= 3.3V, V
= 0A to 600mA
Load Transient Response
200
0
Output Current (mA)
OUT
Time (500 s/Div)
300
= 1.8V
25
Temperature ( C)
400
50
500
75
RT9201
www.richtek.com
100
600
V
V
V
V
I
OUT
IN
OUT
IN
OUT
= 5V
= 3.3V
= 0A
125
700
= 3.3V
= 1.8V
150
800
7