TLS115D0 datasheet(22/26 Pages) INFINEON

Part #	TLS115D0

Description	High Precision Voltage Tracker

PDF	26 Pages

Scroll/Zoom	100%

Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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22 / 26 page

TLS115D0

High Precision Voltage Tracker

Application information

Data Sheet

Rev. 1.00

2016-10-13

Based on the above calculation the proper PCB type and the necessary heat sink area can be determined with

reference to the specification in “Thermal resistance” on Page 8.

Example

Application conditions:

VIN = 13.5 V

VOUT = VADJ =5V

IOUT =100 mA

Ta = 75°C

Calculation of RthJA,max:

PD =(VIN – VOUT) x IOUT + VIN x Iq

= (13.5V – 5V) x 100 mA + 13.5 V x 3.5 mA

= 0.897 W

RthJA,max =(Tj,max – Ta) / PD

= (150°C – 75°C) / 0.897 W

= 83.61 K/W

As a result, the PCB design must ensure a thermal resistance RthJA lower than 83.61 K/W. According to

“Thermal resistance” on Page 8, at least 300 mm² heatsink area is required on the FR4 1s0p PCB, or the FR4

2s2p board can be used.

5.4

Further application information

• For further information you may contact http://www.infineon.com/

TLS115D0 Datasheet(PDF) 22 Page - Infineon Technologies AG