RT4539A

Copyright © 2022 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation

www.richtek.com

DS4539A-01

December 2022

38

Package

Number of

Pin

Footprint Dimension (mm)

Tolerance

P

Ax

Ay

Bx

By

C

D

Sx

Sy

V/W/U/XQFN4*4-24

Option1

24

0.50 4.80 4.80 3.10 3.10 0.85 0.30

2.55 2.55

±0.05

Option2

2.60 2.60

Richtek Technology Corporation

14F, No. 8, Tai Yuen 1st Street, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789

Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should

obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot assume

responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and

reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may

result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.