RT9730 datasheet(3/9 Pages) RICHTEK

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RT9730

DS9730-01 April 2011

www.richtek.com

Electrical Characteristics

Recommended Operating Conditions

(Note 4)

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

−40°C to 125°C

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

−40°C to 85°C

Absolute Maximum Ratings

(Note 1)

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

−0.3V to 30V

Output (as VIN > VOUT, normal mode) ---------------------------------------------------------------------------------

−0.3V to 7V

Output (as sleep mode) --------------------------------------------------------------------------------------------------

−0.3V to 4.5V

Other Pins-------------------------------------------------------------------------------------------------------------------

−0.3V to 6V

Power Dissipation, PD @ TA = 25

°C

WDFN-8L 2x2 -------------------------------------------------------------------------------------------------------------- 0.833W

Package Thermal Resistance (Note 2)

WDFN-8L 2x2,

θJA --------------------------------------------------------------------------------------------------------- 120°C/W

WDFN-8L 2x2,

θJC -------------------------------------------------------------------------------------------------------- 8.2°C/W

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

(VIN = 5V, TA = 25

°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

VIN Under Voltage Lockout

Threshold

VUVLO

VIN Rising

2.5

2.7

2.9

VIN Under Voltage Lockout

Hysteresis

ΔVUVLO

100

VIN Bias Current

When enable

200

600

μA

Reverse Leakage

ILEAKAGE

As ACIN floating

μA

Operation Voltage

4.3

6.5

Operation Current

Protections

Input OVP Reference Voltage VINOVP

6.25

6.5

Input OVP Hysteresis

100

Input OVP Propagation Delay

μs

OTP Rising Thershold

140

°C

OTP Hysteresis

°C

Power MOSFET

RDS(ON) Between ACIN to

OUT

RDS(ON)_OUT

Measure @ 500mA.

4.3V < VIN < 6V

500

RDS(ON) Between ACIN to

CHRIN

RDS(ON)_CHRIN

Measure @ 50mA.

4.3V < VIN < 6V

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