RT7296F

Copyright © 2023 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS7296F-06

September

2023

6

Absolute Maximum Ratings

(Note 1)

⚫

Supply Input Voltage, VIN

--------------------------------------------------------------------------------------- −0.3V to 20V

⚫

Switch Voltage, SW

------------------------------------------------------------------------------------------------ −0.3V to 20.3V

<10

s-------------------------------------------------------------------------------------------------------------------- −1V to 20.3V

<100ns

------------------------------------------------------------------------------------------------------------------ −5V to 25V

⚫

BOOT to SW, VBOOT – SW

--------------------------------------------------------------------------------------- −0.3V to 6V (7V for < 10s)

⚫

Bias Supply Output, PVCC

------------------------------------------------------------------------------------- −0.3V to 6V (7V for < 10s)

⚫

Other Pins

------------------------------------------------------------------------------------------------------------- −0.3V to 6V

⚫

Power Dissipation, PD @ TA = 25

C

TSOT-23-8 (FC)

---------------------------------------------------------------------------------------------------- 1.428W

⚫

Package Thermal Resistance

(Note 2)

TSOT-23-8 (FC),

JA---------------------------------------------------------------------------------------------- 70C/W

TSOT-23-8 (FC),

JC --------------------------------------------------------------------------------------------- 15C/W

⚫

Lead Temperature (Soldering, 10 sec.)

-------------------------------------------------------------------- 260C

⚫

Junction Temperature

--------------------------------------------------------------------------------------------- −40C to 150C

⚫

Storage Temperature Range

----------------------------------------------------------------------------------- −65C to 150C

⚫

ESD Susceptibility

(Note 3)

HBM (Human Body Model)

------------------------------------------------------------------------------------- 2kV

Recommended Operating Conditions

(Note 4)

⚫

Supply Input Voltage, VIN ----------------------------------------------------------------------------- 4.5V to 17V

⚫

Junction Temperature Range

---------------------------------------------------------------------------------- −40C to 125C

⚫

Ambient Temperature Range

---------------------------------------------------------------------------------- −40C to 85C

Electrical Characteristics

(VIN = 12V, TA = 25C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Shutdown Supply Current

VEN = 0V

--

7

--

A

Quiescent Current with no Load

at DCDC Output

VEN = 2V, VFB = 1V

--

0.8

1

mA

Feedback Voltage

VFB

0.799

0.807

0.815

V

Feedback Current

IFB

VFB = 820mV

--

10

50

nA

Switch

On-Resistance

High-Side

RDS(ON)H

--

80

--

m



Low-Side

RDS(ON)L

--

30

--

Switch Leakage

VEN = 0V, VSW = 0V

--

--

1

A

Current Limit

ILIM

Under 40% duty-cycle

4.2

5

5.8

A

Low-Side Switch Current Limit

From drain to source

--

2

--

A

Oscillation Frequency

fOSC

VFB = 0.75V

440

500

570

kHz

SYNC Frequency Range

fSYNC

200

--

2000

kHz

Fold-Back Frequency

VFB < 400mV

--

125

--

kHz