RT9261 Ver la hoja de datos (PDF) - Richtek Technology
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Lista de partido
RT9261 Datasheet PDF : 12 Pages
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RT9261/A
Preliminary
Electrical Characteristics (Refer to Figure 4)
Parameter
Symbol
Test Conditions
Min Typ Max Units
Output Voltage Accuracy
ΔVOUT
-2
-- +2 %
Input Voltage
VIN
--
--
7
V
Start-up Voltage
Efficiency
Input Current 1
Input Current 2
EXT “H” Output
Current
EXT “L” Output
Current
VST
VOUT ≤ 3.5V (1)
3.5V < VOUT ≤ 5V (2)
VOUT ≤ 3.5V (1)
3.5V < VOUT ≤ 5V (2)
VOUT ≤ 3.5V (1)
3.5V < VOUT ≤ 5V (2)
VOUT ≤ 3.5V (1)
3.5V < VOUT ≤ 5V (2)
VOUT ≤ 3.5V (1)
3.5V < VOUT ≤ 5V (2)
IOUT = 1mA, VIN : 0 → 2V
--
--
--
To be measured at VIN at no --
load
--
To be measured at VOUT in
--
switch off condition
-1.5
VEXT = VOUT – 0.4V
-2
1.5
VEXT = 0.4V
2
0.85 1.0 V
75 --
%
85 --
30 50
μA
60 90
6 10 μA
--
--
mA
--
--
--
--
mA
--
--
EN “H” Level
VIN = VOUT × 0.9
0.4× VOUT --
--
V
EN “ L” Level
VIN = VOUT × 0.9
--
-- 0.2 V
EN “ H” Input Current
EN = VOUT
--
-- 0.5 μA
EN “ L“ Input Current
EN = 0V
-0.5
--
-- μA
Maximum Oscillator Frequency
FMAX
80
120 160 kHz
Oscillator Duty Cycle
DOSC On (VLX ” L” ) side
65
75 85 %
VLX Voltage Limit
LX switch on
0.65 0.8 1.0 V
Notes:
(1)Unless otherwise provided, VIN = 1.8V, VSS = 0V, IOUT = 10mA, TOPT = 25°C, and use External Circuit of Typical
Application
(2)Unless otherwise provided, VIN = 3V, VSS= 0V, IOUT = 10mA, TOPT
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8
DS9261/A-12 March 2007
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