RT5021 datasheet(8/67 Pages) RICHTEK

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RT5021

DS5021-01 April 2013

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Recommended Operating Conditions

(Note 4)

Supply Input Voltage, BAT ----------------------------------------------------------------------------------------------- 1.8V to 5.5V

Supply Input Voltage Range, VIN (A7.ISETL = 1) ------------------------------------------------------------------- 4.4V to 6V

Supply Input Voltage Range, VIN (A7.ISETL = 0) ------------------------------------------------------------------- 4.5V to 6V

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

−40°C to 125°C

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

−40°C to 85°C

Electrical Characteristics

(VSYS = 3.3V, TA = 25

°C, unless otherwise specified)

Power Converter Unit :

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Supply Voltage

PMU Startup Voltage at SYS

VST

For bootstrap

1.5

SYS Operating Voltage for PMU

VSYS

2.7

5.5

VDDI Over Voltage Protection

(OVP) (Hysteresis High)

5.82

6.18

VDDI OVP Hysteresis (Gap)

−0.25

VDDI UVLO (Hysteresis High)

VDDI UVLO takes effect once

CH2 soft-start finish

2.2

2.4

2.6

VDDI UVLO Hysteresis (Gap)

−0.3

Absolute Maximum Ratings

(Note 1)

Supply Voltages, SYS ----------------------------------------------------------------------------------------------------

−0.3V to 6V

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

−0.3V to 28V

Switch Node Voltage, LX1, LX2, LX3, LX4, LX5 ----------------------------------------------------------------------

−0.3V to 6V

PVD7, LX7 --------------------------------------------------------------------------------------------------------------------

−0.3V to 25V

CHG ---------------------------------------------------------------------------------------------------------------------------

−0.3V to 28V

CHG2 --------------------------------------------------------------------------------------------------------------------------

−0.3V to 6V

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

−0.3V to 6V

INT, CHG, CHG2 Continuous Current ---------------------------------------------------------------------------------- 20mA

BAT Continuous Current (Total in two pins) -------------------------------------------------------------------------- 2.5A

Power Dissipation, PD @ TA = 25

°C

WQFN-40L 5x5 ------------------------------------------------------------------------------------------------------------- 3.64W

Package Thermal Resistance (Note 2)

WQFN-40L 5x5,

θJA -------------------------------------------------------------------------------------------------------- 27.5°C/W

WQFN-40L 5x5,

θJC ------------------------------------------------------------------------------------------------------- 6°C/W

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

°C

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

°C

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

−65°C to 125°C

ESD Susceptibility (Note 3)

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

MM (Machine Model) ------------------------------------------------------------------------------------------------------ 200V

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