35

LTC4230

4230f

4230 F26

NOTE: DRAWING IS NOT TO SCALE!

**ADDITIONAL DETAILS OMITTED FOR CLARITY

*OPTIONAL COMPONENTS

VIA TO

GNDPLANE

12k

5.1k

LTC4230**

D

D

D

D

G

S

S

S

POWER MOSFET

SO-8

SENSE RESISTOR

CURRENT FLOW

TO LOAD

TRACK WIDTH W

W

W

CURRENT FLOW

TO LOAD

CURRENT FLOW

TO LOAD

W

APPLICATIO S I FOR ATIO

APPE DIX

Table 4 lists some current sense resistors that can be used

with the circuit breaker. Table 5 lists some power MOSFETs

that are available. Table 6 lists the web sites of several

manufacturers. Since this information is subject to change,

please verify the part numbers with the manufacturer.

Table 4. Sense Resistor Selection Guide

CURRENT LIMIT VALUE

PART NUMBER

DESCRIPTION

MANUFACTURER

1A

LR120601R050

0.05

Ω 0.5W 1% Resistor

IRC-TT

2A

LR120601R025

0.025

Ω 0.5W 1% Resistor

IRC-TT

2.5A

LR120601R020

0.02

Ω 0.5W 1% Resistor

IRC-TT

3.3A

WSL2512R015F

0.015

Ω 1W 1% Resistor

Vishay-Dale

5A

LR251201R010F

0.01

Ω 1.5W 1% Resistor

IRC-TT

10A

WSR2R005F

0.005

Ω 2W 1% Resistor

Vishay-Dale

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.