RT9722 datasheet(4/14 Pages) RICHTEK

4 / 14 page

RT9722

DS9722-00 August 2011

www.richtek.com

To be continued

Absolute Maximum Ratings (Note 1)

Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------ 6V

EN Voltage ------------------------------------------------------------------------------------------------------------------

−0.3V to 6V

FLAG, SET Voltage ------------------------------------------------------------------------------------------------------- 6V

Power Dissipation, PD @ TA = 25

°C

SOT-23-5/SOT-23-6 ------------------------------------------------------------------------------------------------------- 0.4W

WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 0.606W

Package Thermal Resistance (Note 2)

SOT-23-5/SOT-23-6 ------------------------------------------------------------------------------------------------------- 250

°C/W

WDFN-6L 2x2,

θJA --------------------------------------------------------------------------------------------------------- 165°C/W

Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260

°C

Junction Temperature ----------------------------------------------------------------------------------------------------- 150

°C

Storage Temperature Range --------------------------------------------------------------------------------------------

−65°C to 150°C

ESD Susceptibility (Note 3)

HBM -------------------------------------------------------------------------------------------------------------------------- 2kV

MM ---------------------------------------------------------------------------------------------------------------------------- 200V

Recommended Operating Conditions

(Note 4)

Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------ 2.4V to 5.5V

EN Voltage ------------------------------------------------------------------------------------------------------------------ 0V to 5.5V

Junction Temperature Range --------------------------------------------------------------------------------------------

−40°C to 125°C

Ambient Temperature Range --------------------------------------------------------------------------------------------

−40°C to 85°C

Electrical Characteristics

(VIN = 5V, CIN = 1

μF, COUT = 0.47μF, TA = 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Switch On Resistance

RDS(ON)

VIN = 5V, RSET = 20kΩ,

IOUT = 100mA

145

180

Quiescent Current

EN = Active, SET Pin Open,

IOUT = 0

μA

Shutdown Current

ISHDN

EN = Inactive, VOUT = Open

0.1

μA

Logic-Low

VIL

0.6

EN/EN Threshold

Voltage

Logic-High VIH

1.4

EN/EN Input Current

IEN/EN

VEN/EN = 5V

0.01

0.1

μA

Output Leakage Current

ILEAKAGE

Switch Off, VOUT = 0V

0.01

μA

Turn On Time

tON

VIN = 5V, RLOAD = 10Ω

200

μs

Turn Off Time

tOFF

VIN = 5V, RLOAD = 10Ω

μs

Current Limit

ILIM

RSET = 6.8kΩ, VOUT = 4V

0.75

1.25

Minimum Current Limit

ILIM(MIN)

0.2

Current Limit Response Time

tResponse

RLOAD = 0Ω

μs

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