RT9261 RICHTEK [Richtek Technology Corporation], RT9261 Datasheet - Page 5

• Manufacturer Part Number: RT9261
• Description: VFM Step-up DC/DC Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Electrical Characteristics
DS9261/A-03 January 2002
Notes:
(1) Unless otherwise provided, V
(2) Unless otherwise provided, V
Output Voltage Accuracy
Input Voltage
Start-up Voltage
Efficiency
Input Current 1
Input Current 2
CE “H” Level
CE “ L” Level
CE “ H” Input Current
CE “ L“ Input Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
V
EXT “H” Output
Current
EXT “L” Output
Current
LX
Typical Application
Application
Voltage Limit
Parameter
V
3.5V < V
V
3.5V < V
V
3.5V < V
V
3.5V < V
V
3.5V < V
OUT
OUT
OUT
OUT
OUT
≤ 3.5V
≤ 3.5V
≤ 3.5V
≤ 3.5V
≤ 3.5V
OUT
OUT
OUT
OUT
OUT
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
IN
IN
= 1.8V, VSS = 0V, I
= 3V, VSS = 0V, I
(Refer to Fig. 4)
(2)
(2)
(2)
(2)
(2)
Symbol
∆V
V
V
F
D
MAX
IN
ST
OSC
OUT
Preliminary
I
To be measured at V
no load
To be measured at V
switch off condition
V
V
V
V
CE = V
CE = 0V
On (V
LX switch on
OUT
OUT
EXT
EXT
IN
IN
OUT
= V
= V
= 10mA, T
Test Conditions
= 1mA, V
= V
= 0.4V
LX
= 10mA, T
OUT
OUT
OUT
” L” ) side
OUT
× 0.9
× 0.9
– 0.4V
IN
OPT
: 0 → 2V
OPT
= 25°C, and External Circuit of Typical
IN
OUT
= 25°C, and use External Circuit of
at
in
0.4× V
0.65
Min
-1.5
-0.5
1.5
80
65
-2
-2
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2
OUT
RT9261/A
0.85
Typ
120
www.richtek-ic.com.tw
0.8
75
85
30
60
75
--
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--
--
--
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6
Max
160
1.0
0.2
0.5
1.0
+2
50
90
10
85
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7
Units
KHz
mA
mA
µA
µA
µA
µA
%
%
%
V
V
V
V
V
5