RT9261 RICHTEK [Richtek Technology Corporation], RT9261 Datasheet - Page 4

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

RT9261/A
Electrical Characteristics
www.richtek-ic.com.tw
4
Notes:
(1) Unless otherwise provided, V
(2) Unless otherwise provided, V
Output Voltage Accuracy
Input Voltage
Start-up Voltage
Hold-on Voltage
Efficiency
Input Current 1
Input Current 2
LX Leakage Current
CE “H” Level
CE “ L” Level
CE “ H” Input Current
CE “ L“ Input Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
V
LX Switching
Current
LX
Typical Application
Application
Voltage Limit
Parameter
V
3.5V < V
V
3.5V < V
V
3.5V < V
V
3.5V < V
OUT
OUT
OUT
OUT
≤ 3.5V
≤ 3.5V
≤ 3.5V
≤ 3.5V
OUT
OUT
OUT
OUT
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
IN
IN
= 1.8V, VSS = 0V, I
= 3V, VSS = 0V, I
(2)
(2)
(2)
(2)
(Refer to Fig. 3)
∆V
V
V
V
I
I
F
D
SWITCHING
LEAKAGE
Symbol
MAX
IN
ST
HO
OSC
OUT
Preliminary
OUT
I
I
To be measured at V
no load
To be measured at V
in switch off condition
V
V
V
V
CE = V
CE = 0V
On (V
LX switch on
OUT
OUT
OUT
LX
LX
IN
IN
= 10mA, T
= V
= V
Test Conditions
= 0.4V
= 6V
= 1mA, V
= 1mA, V
= 10mA, T
LX
OUT
OUT
OUT
” L” ) side
× 0.9
× 0.9
IN
IN
OPT
OPT
: 0 → 2V
: 2 → 0V
= 25°C, and External Circuit of Typical
= 25°C, and use External Circuit of
IN
OUT
at
0.4× V
0.65
Min
-0.5
0.7
60
80
80
65
-2
--
--
--
--
--
--
--
--
--
--
--
OUT
DS9261/A-03 January 2002
0.85
Typ
120
0.8
75
85
15
18
75
--
--
--
--
--
--
--
--
--
--
5
6
Max
160
1.0
0.5
0.2
0.5
1.0
+2
18
24
10
85
--
--
--
--
--
--
--
7
8
Units
KHz
mA
µA
µA
µA
µA
µA
%
%
%
V
V
V
V
V
V