RT9261 datasheet(6/12 Pages) RICHTEK

6 / 12 page

RT9261/A

Preliminary

DS9261/A-12 March 2007

www.richtek.com

Electrical Characteristics (Refer to Figure 2)

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Output Voltage Accuracy

ΔVOUT

-2

Input Voltage

VIN

Start-up Voltage

VST

IOUT = 1mA, VIN : 0 → 2V

0.85

1.0

VOUT ≤ 3.5V

(1)

Input Current 1

3.5V

< V

OUT ≤ 5V

(2)

To be measured at VIN at no

load

μA

VOUT ≤ 3.5V

(1)

Input Current 2

3.5V

< V

OUT ≤ 5V

(2)

To be measured at VOUT in

switch off condition

μA

VOUT ≤ 3.5V

(1)

-1.5

EXT “H” Output

Current

3.5V

< V

OUT ≤ 5V

(2)

VEXT = VOUT – 0.4V

-2

VOUT ≤ 3.5V

(1)

1.5

EXT “L” Output

Current

3.5V

< V

OUT ≤ 5V

(2)

VEXT = 0.4V

Maximum Oscillator Frequency

FMAX

120

160

kHz

Oscillator Duty Cycle

DOSC

VEXT ” H ” side

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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