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參數資料
| 型號： | RT9267 |
| 英文描述： | Step-up DC/DC Converter |
| 中文描述： | 升壓型DC / DC轉換器 |
| 文件頁數： | 3/14頁 |
| 文件大?。?/td> | 223K |
| 代理商： | RT9267 |
Preliminary
RT9261/A
DS9261/A-03 January 2002
www.richtek.com
3
Electrical Characteristics
(Refer to Fig. 2)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Output Voltage Accuracy
V
OUT
-2
--
+2
%
Input Voltage
V
IN
--
--
7
V
Start-up Voltage
V
ST
I
OUT
= 1mA, V
IN
: 0
→
2V
--
0.85
1.0
V
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
--
30
50
Input Current 1
To be measured at V
IN
at no
load
--
60
90
μ
A
Input Current 2
To be measured at V
OUT
in
switch off condition
--
6
10
μ
A
-1.5
--
--
EXT “H” Output
Current
V
EXT
= V
OUT
– 0.4V
-2
--
--
mA
1.5
--
--
EXT “L” Output
Current
V
EXT
= 0.4V
2
--
--
mA
Maximum Oscillator Frequency
F
MAX
80
120
160
KHz
Oscillator Duty Cycle
D
OSC
V
EXT
” H ” side
65
75
85
%
Notes:
(1) Unless otherwise provided, V
IN
= 1.8V, VSS = 0V, I
OUT
= 10mA, T
OPT
= 25
°
C, and use External Circuit of
Typical Application
(2) Unless otherwise provided, V
IN
= 3V, VSS = 0V, I
OUT
= 10mA, T
OPT
= 25
°
C, and External Circuit of Typical
Application
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