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A1157LLHLT-T Datasheet(PDF) 5 Page - Allegro MicroSystems

Part # A1157LLHLT-T
Description  Chopper-Stabilized, Two-Wire Hall-Effect Switches
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A1157LLHLT-T Datasheet(HTML) 5 Page - Allegro MicroSystems

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Temperature (ºC)
Power Derating Curve
(RθJA = 228 ºC/W)
1-layer PCB, Package LH
(RθJA = 110 ºC/W)
2-layer PCB, Package LH
(RθJA = 165 ºC/W)
1-layer PCB, Package UA
VCC(min)
VCC(max)
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1500
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Temperature (°C)
Power Dissipation versus Ambient Temperature
(R
θJA = 165
ºC/W)
1-layer
PCB, P
ackage
UA
(R
θJA
= 228 ºC
/W)
1-layer P
CB, Pack
age LH
(R
θJA = 1
10 ºC
/W)
2-lay
er P
CB,
Pack
age
LH
THERMAL CHARACTERISTICS: may require derating at maximum conditions; see application information
Characteristic
Symbol
Test Conditions*
Value
Unit
Package Thermal Resistance
RθJA
Package LH, on 1-layer PCB with copper limited to solder pads
228
ºC/W
Package LH, on 2-layer PCB with 0.463 in.2 of copper area each side
110
ºC/W
Package UA, on 1-layer PCB with copper limited to solder pads
165
ºC/W
Package UB, on 1-layer PCB with copper limited to solder pads
213
ºC/W
*Additional thermal information available on the Allegro website
LH and UA Power Derating Curve
UB Power Derating Curve
LH and UA Power Dissipation versus Ambient Temperature
UB Power Dissipation versus Ambient Temperature
Chopper-Stabilized, Two-Wire
Hall-Effect Switches
A1150, A1152, A1153, A1155,
A1156, A1157, and A1158
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com


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