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參數(shù)資料
| 型號： | RT9271 |
| 英文描述： | Step-up DC/DC Converter |
| 中文描述： | 升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大小： | 386K |
| 代理商： | RT9271 |
RT9271
Preliminary
www.richtek.com
4
DS9271-01 July 2003
Absolute Maximum Ratings
z
Input Supply Voltage
0.3V to 7V
0.3V to 21V
0.3V to 21V
0
°
C to 70
°
C
0
°
C to 125
°
C
65
°
C to 150
°
C
z
SW
z
The Other Pins
z
Operating Temperature Range
z
Junction Temperature Range
z
Storage Temperature Range
Electrical Characteristics
(V
CC
= 3.6V, T
A
= 25
°
C, Unless Otherwise specification)
Parameter
System Supply Input
Operation Voltage Range
Under Voltage Lock Out
Maximum Output Voltage
Supply Current
Quiescent Current
Shut Down Current
Oscillator
Operation Frequency
Maximum Duty Cycle
Reference Voltage
Feedback Voltage
MOSFET
On Resistance of MOSFET
Current Limitation
Current Limit
Control and Protection
Shut Down Voltage
Enable Voltage
CE Pin Pull Low Current
OVP Threshold
Note: Floating the OVP pin to disable OVP function
Symbol
Test Condition
Min
Typ
Max
Units
V
CC
UVLO
I
CC1
I
CC2
I
CC3
V
CC
=6V, Continuously Switching
V
CC
=6V, FB=1.3V, No Switching
V
CC
=6V, V
CE
<0.4V
2.4
6
20
2
1
V
V
V
mA
μA
μA
2.2
90
F
OSC
Dmax
0.9
85
1.1
90
1.3
MHz
%
VFB
0.237
0.25
0.263
V
Rds(on)
I
max1
I
max2
0.75
800
500
Ω
mA
mA
Normal Operation
Start up Condition
V
CE1
V
CE2
I
CE
OVP
0.4
14.5
0.8
0.8
4
15.5
V
V
μA
V
1.4
20.0
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