RT4841

5

DS4841-00 May 2021

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Copyright

2021 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

General

Supply Voltage

VIN

8.6

12

15.9

V

VIN Under Voltage

VUVLO

VIN rising

6.4

6.7

7

V

Lockout Hys

VIN falling

0.6

0.8

1

V

IIN Quiescent Current

IQVIN

VIN = 12V

--

5

--

mA

VL Output Voltage

VL

--

5

--

V

Fault Detection

Thermal Shutdown

TSD

Temperature rising

--

150

--

°C

Thermal Shutdown

Hysteresis

TSD_Hsy

--

15

--

°C

Enable

High-Level Input Voltage

VIH

1.3

--

--

V

Low-Level Input Voltage

VIL

--

--

0.8

V

Sync. Step-up Converter

FB Regulation Voltage

VREF

1.25V

1%

--

1

%

Switching Frequency

fOSC

450

500

550

kHz

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)



SW, SWO, SWG, SWI to GND -----------------------------------------------------------------------------------------

−0.3 to 22V



BT to GND --------------------------------------------------------------------------------------------------------------------

−0.3 to 26V



VIN to GND -------------------------------------------------------------------------------------------------------------------

−0.3 to 16.5V



SWI to SWO ----------------------------------------------------------------------------------------------------------------

−0.3 to 22V



VL, COMP, SS, FB, EN to GND ----------------------------------------------------------------------------------------

−0.3 to 6.5V



Power Dissipation, PD @ TA = 25

°C

WQFN-20L 4x4 ------------------------------------------------------------------------------------------------------------- 3.57W



Package Thermal Resistance (Note 2)

WQFN-20L 4x4,

θJA -------------------------------------------------------------------------------------------------------- 28°C/W

WQFN-20L 4x4,

θJC ------------------------------------------------------------------------------------------------------- 7°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 Model) ----------------------------------------------------------------------------------------------- 2kV

(VIN = 12V, EN = high, SWO = 14.5V, TA = 25

°C, unless otherwise specified)