RT8057 datasheet(3/11 Pages) RICHTEK

3 / 11 page

RT8057

DS8057-03

November 2011

www.richtek.com

Absolute Maximum Ratings

(Note 1)

Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------ 6.5V

Power Dissipation, PD @ TA = 25

°C

WDFN-6SL 2x2 ------------------------------------------------------------------------------------------------------------ 0.606W

Package Thermal Resistance (Note 2)

WDFN-6SL 2x2,

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

WDFN-6SL 2x2,

θJC ------------------------------------------------------------------------------------------------------ 8.2°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 ------------------------------------------------------------------------------------------------ 2.7V to 5.5V

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

−40°C to 125°C

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

−40°C to 85°C

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Output Current

IOUT

VIN = 2.7V to 5.5V

Quiescent Current

IOUT = 0mA

μA

−2

Reference Voltage

VREF

Note 5

−2.5

2.5

VIN Rising

2.2

2.4

Under Voltage Lockout Threshold VUVLO

Hysteresis

0.2

Shutdown Current

ISHDN

0.1

μA

Switching Frequency

2.25

MHz

Logic-High

VIH

VIN

EN Threshold

Voltage

Logic-Low

VIL

0.4

Thermal Shutdown Temperature

TSD

150

°C

High Side

RDS(ON)_H ISW = 0.2A

250

Switch On

Resistance

Low Side

RDS(ON)_L ISW = 0.2A

200

Peak Current Limit

ILIM

1.1

1.5

Output Voltage Line Regulation

VIN = 2.7V to 5.5V

%/V

Output Voltage Load Regulation

0mA < IOUT < 0.6A

Start-Up Time

tss

Guaranteed by Design

200

300

400

μs

(VIN = 3.6V, TA = 25

°C unless otherwise specified)

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