RT8032 datasheet(4/11 Pages) RICHTEK

4 / 11 page

RT8032

DS8032-02

March 2011

www.richtek.com

Absolute Maximum Ratings

(Note 1)

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

−0.3V to 6V

Switching Voltage, SW ------------------------------------------------------------------------------------------

−0.3V to (VIN+ 0.3V)

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

−0.3V to 6V

Power Dissipation, PD @ TA = 25

°C

WDFN-12L 4x3 ----------------------------------------------------------------------------------------------------- 1.667W

Package Thermal Resistance (Note 2)

WDFN-12L 4x3,

θJA ----------------------------------------------------------------------------------------------- 60°C/W

WDFN-12L 4x3,

θJC ----------------------------------------------------------------------------------------------- 7.5W

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

°C

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

°C

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

−65°C to 150°C

ESD Susceptibility (Note 3)

HBM (Human Body Mode) -------------------------------------------------------------------------------------- 2kV

MM (Machine Mode) ---------------------------------------------------------------------------------------------- 200V

Electrical Characteristics

(VIN = 5V, TA = 25

°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Feedback Reference Voltage

VREF

0.784

0.8

0.816

Active, Not Switching, VFB = 0.75V

550

μA

DC Bias Current (PVDD, VDD

total)

EN =0

μA

VIN Rising

2.3

2.43

2.55

Under Voltage Lockout

Threshold

VIN Falling

2.13

2.29

2.43

Switching Frequency

1.2

1.4

MHz

Logic-High Voltage VIH

VEN Rising

1.4

Threshold Logic-Low Voltage V

VEN Falling

0.4

Switch On Resistance, High

RPMOS

ISW = 0.2A

230

Switch On Resistance, Low

RNMOS

ISW = 0.2A

230

Input Average Current Limit

IAVG

RLIM = 25.5kΩ

0.4

0.45

0.5

Peak Current Limit

ILIM

1.6

1.9

Output Voltage Line Regulation

VIN = 3V to 5.5V

0.1

%/V

Output Voltage Load

Regulation

0mA < ILOAD < 1.2A

Recommended Operating Conditions

(Note 4)

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

−40°C to 125°C

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

−40°C to 85°C

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