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參數(shù)資料
| 型號： | RT9261B-40CX |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | VFM STEP UP DC/DC CONVERTER |
| 中文描述： | 衡工量值式升壓型DC / DC變換器 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 192K |
| 代理商： | RT9261B-40CX |
RT9261B
Preliminary
www.richtek-ic.com.tw
4
DS9261B-03 September 2001
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
I
OUT
= 1mA, V
IN
: 2
→
0V
--
0.8
1
V
Hold-on Voltage
V
HO
0.7
--
--
V
Efficiency
--
80
--
%
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
--
24
36
Input Current 1
To be measured at V
IN
in
continuous switching
--
36
45
μ
A
Input Current 2
(1) (2)
To be measured at V
OUT
in switch off condition
--
6.5
10
μ
A
V
OUT
≤
3.5V
(1)
--
18
36
Input Current 3
3.5V
<
V
OUT
≤
5V
(2)
V
OUT
≤
3.5V
(1)
3.5V
<
V
OUT
≤
5V
(2)
I
SWITCHING
V
LX
= 0.4V
To be measured at V
IN
in
no load (guaranteed by I
1
and
I
2
)
--
20
45
μ
A
120
--
--
LX Switching Current
160
--
--
mA
LX Leakage Current
I
LEAKAGE
V
LX
= 6V
--
--
0.5
μ
A
CE “H” Level
V
IN
= V
OUT
* 0.9
0.4
×
V
OUT
--
--
V
CE “L” Level
V
IN
= V
OUT
* 0.9
--
--
0.2
V
CE “H” Input Current
CE = V
OUT
--
--
0.5
μ
A
CE “ L” Input Current
CE = 0V
-0.5
--
--
μ
A
Maximum Oscillator Frequency
F
MAX
140
190
240
KHz
Oscillator Duty Cycle
D
OSC
On (V
LX
“L”) side
65
75
85
%
V
LX
Voltage Limit
LX switch on
0.65
0.8
1.0
V
Notes:
(1) V
IN
= 1.8V, V
SS
= 0V, I
OUT
= 1mA, Topt = 25
°
C, and External Circuit of Typical Application
(2) V
IN
= 3V, V
SS
= 0V, I
OUT
= 1mA, Topt = 25
°
C, and External Circuit of Typical Application
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