RT8056 datasheet(3/11 Pages) RICHTEK

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RT8056

DS8056-02 April 2011

www.richtek.com

Absolute Maximum Ratings

(Note 1)

Supply Input Voltage, VIN -----------------------------------------------------------------------------------------------------------------------------------

−0.3V to 6.5V

LX1, LX2 Pin Voltages -----------------------------------------------------------------------------------------------

−0.3V to (VIN+0.3V)

Other I/O Pin Voltages ----------------------------------------------------------------------------------------------

−0.3V to 6.5V

Power Dissipation, PD @ TA = 25

°C

WDFN-10L 3x3 -------------------------------------------------------------------------------------------------------- 1.429W

Package Thermal Resistance (Note 2)

WDFN-10L 3x3,

θJA -------------------------------------------------------------------------------------------------- 70°C/W

WDFN-10L 3x3,

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 ------------------------------------------------------------------------------------------- 2.8V 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

Quiescent Current

300

μA

Feedback Reference Voltage

VREF

0.588

0.6

0.612

VIN Rising

2.1

Under Voltage Lockout Threshold

VUVLOH

Hysteresis

0.18

Shutdown Current

ISHDN

0.1

μA

Switching Frequency

1.2

1.5

1.8

MHz

Logic High

VIH

1.5

VIN

ENx Threshold

Voltage

Logic Low

VIL

0.4

Peak Current Limit

ILIM

VIN = 2.8V to 5.5V

1.1

1.5

Output Voltage Line Regulation

VIN = 2.8V to 5.5V

0.04

0.4

Output Voltage Load Regulation

0mA < ILOAD < 1A

(Note5)

Switch On-Resistance, High

RDS(ON)_H

ISW = 0.2A

280

Switch On Resistance, Low

RDS(ON)_L

ISW = 0.2A

290

Thermal Shutdown Temperature

TSD

138

°C

Thermal Shutdown Hysteresis

°C

(VIN = 3.6V, TA = 25

°C unless otherwise specified)

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