RT9481 datasheet(6/41 Pages) RICHTEK

6 / 41 page

RT9481

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS9481-00 June 2015

Absolute Maximum Ratings (Note 1)



VBUS, VHMID Supply Input Voltage ----------------------------------------------------------------------------

0.3V to 18V



VMID---------------------------------------------------------------------------------------------------------------------

0.3V to 6.7V



LX, BOOT --------------------------------------------------------------------------------------------------------------

0.3V to 6V



VMID

 VBUS, BOOT LX----------------------------------------------------------------------------------------- 0.3V to 6V



Others -------------------------------------------------------------------------------------------------------------------

0.3V to 6V



Power Dissipation, PD @ TA = 25°C

WQFN-24L 4x4 ------------------------------------------------------------------------------------------------------

3.57W



Package Thermal Resistance (Note 2)

WQFN-24L 4x4,

JA ------------------------------------------------------------------------------------------------- 28C/W

WQFN-24L 4x4,

JC------------------------------------------------------------------------------------------------- 7.1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 (Human Body Model) ----------------------------------------------------------------------------------------

2kV

MM (Machine Model) -----------------------------------------------------------------------------------------------

200V

Recommended Operating Conditions (Note 4)



Supply Input Voltage-------------------------------------------------------------------------------------------------

4.3V to 5.65V



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

40C to 125C



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

40C to 85C

Electrical Characteristics

(VBUS = 5V, VBATS = 4.2V, TA = 25C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Input Power Source

VBUS Operation Range

5.65

VBUS Supply Current

PWM switching,

ICHG = IBAT = 0mA

High Impendence Mode

200

A

Leakage Current from Battery IBAT_LEAK

VBAT = 4.2V, VBUS = 0V,

Charger off.

1/80 ADC execution time duty

A

Protection

VBUS OVP Threshold

Voltage

VBUS_OVP

VBUS Rising

5.7

6.3

VBUS OVP Hysteresis

VBUS_OVP_

HYS

VBUS Falling

200

VBUS UVLO

VBUS_UVLO

VBUS Rising

3.25

3.5

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