rt9261b-45cx ETC-unknow, rt9261b-45cx Datasheet - Page 4

• Manufacturer Part Number: rt9261b-45cx
• Description: Vfm Step-up Dc/dc Converter
• Manufacturer: ETC-unknow

RT9261B
Electrical Characteristics
Notes:
(1) V
(2) V
www.richtek-ic.com.tw
4
Output Voltage Accuracy
Input Voltage
Start-up Voltage
Hold-on Voltage
Efficiency
Input Current 1
Input Current 2
LX Switching Current
LX Leakage Current
CE “H” Level
CE “L” Level
CE “H” Input Current
CE “ L” Input Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
V
Input Current 3
LX
Voltage Limit
IN
IN
= 1.8V, V
= 3V, V
SS
(1) (2)
Parameter
SS
= 0V, I
= 0V, I
V
3.5V < V
V
3.5V < V
V
3.5V < V
OUT
OUT
OUT
OUT
OUT
≤ 3.5V
≤ 3.5V
≤ 3.5V
= 1mA, Topt = 25°C, and External Circuit of Typical Application
= 1mA, Topt = 25°C, and External Circuit of Typical Application
OUT
OUT
OUT
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
(Refer to Fig. 2)
(2)
(2)
(2)
∆V
V
V
V
I
I
F
D
SWITCHING
LEAKAGE
Symbol
MAX
IN
ST
HO
OSC
OUT
Preliminary
I
I
To be measured at V
continuous switching
To be measured at V
in switch off condition
To be measured at V
no load (guaranteed by I
and I
V
V
V
V
CE = V
CE = 0V
On (V
LX switch on
OUT
OUT
LX
LX
IN
IN
Test Conditions
= V
= V
= 0.4V
= 6V
= 1mA, V
= 1mA, V
2
)
LX
OUT
OUT
OUT
“L”) side
* 0.9
* 0.9
IN
IN
: 0 → 2V
: 2 → 0V
IN
OUT
IN
in
in
1
0.4×V
DS9261B-03 September 2001
0.65
Min
120
160
140
0.7
-0.5
65
-2
--
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OUT
Typ
190
0.8
6.5
0.8
80
24
36
18
20
75
--
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--
--
--
--
--
--
--
--
Max Units
240
0.5
0.2
0.5
1.0
+2
36
45
10
36
45
85
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--
--
--
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7
1
KHz
mA
µA
µA
µA
µA
µA
µA
%
%
%
V
V
V
V
V
V