RT9261 データシートの表示（PDF） - Richtek Technology

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RT9261

VFM Step-Up DC/DC Converter

Richtek Technology 

RT9261/A

Preliminary

Electrical Characteristics (Refer to Figure 2)

Parameter

Symbol

Test Conditions

Min Typ Max Units

Output Voltage Accuracy

ΔVOUT

-2 -- +2 %

Input Voltage

VIN

-- -- 7 V

Start-up Voltage

Input Current 1

Input Current 2

EXT “H” Output

Current

EXT “L” Output

Current

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)

VST

IOUT = 1mA, VIN : 0 → 2V

To be measured at VIN at no

load

To be measured at VOUT in

switch off condition

VEXT = VOUT – 0.4V

VEXT = 0.4V

-- 0.85 1.0 V

-- 30 50

μA

-- 60 90

-- 6 10 μA

-1.5 --

-2 --

1.5 --

2 --

--

mA

--

--

mA

--

Maximum Oscillator Frequency

FMAX

80 120 160 kHz

Oscillator Duty Cycle

DOSC VEXT ” H ” side

65 75 85 %

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 = 25° C, and External Circuit of Typical Application

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DS9261/A-12 March 2007

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