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reference designMCP1781 | Demoboard BB58Y01A

Microchip MCP1781 | Demoboard BB58Y01A

200 mA High-Voltage Automotive LDO

Overview

TopologyOther Topology
Input voltage4-55 V
Output 15 V / 0.2 A
IC revision1

Description

The MCP1781 is a high-voltage, Low Drop-Out (LDO) regulator, capable of supplying 200 mA of output current.The input voltage range of 4.0V to 55V makes it suitable for 12V to 48V power rails, such as those found in highvoltage battery packs, or automotive applications where it can maintain regulation through large transients,including load dump events.A low UVLO of 2.3V makes it adequate for cold cranking conditions in automotive applications.The MCP1781 offers two standard fixed output voltage versions, 3.3V and 5.0V, and an adjustable outputoption, with a voltage range from 1.3V to 5V. The regulator output is stable with a 3.3 µF ceramic capacitor. Thedevice is protected from short-circuit events by the current foldback function and from overheating by meansof thermal shutdown protection.

Features

Modular Design for Easy Evaluation of Each LDOClearly Labeled Sub-Modules for Quick IdentificationPre-Configured Output Voltages for Typical Use CasesTest Points and Connectors for Easy Measurement and Integration

Typical applications

  • Infotainment systems
  • Body control modules
  • High-Voltage Battery Packs for Power Tools, E-Mobility for up to 10S Battery Packs
  • Always-on battery applications: door modules, remote keyless entry, immobilizer
  • Instrument clusters

More information

Parts approved by Microchip

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
Application
PCB/Cable/Panel
Modularity
Type
Wire Section
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
SamplesAvailability & Sample
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691210910004
SPECWR-TBL Series 2109 - 2.54 mm Horiz. Entry, 4, Rising Cage Clamp
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 2109 - 2.54 mm Horiz. Entry
Pins4 
ApplicationRising Cage Clamp 
PCB/Cable/PanelPCB 
ModularityNo 
TypeHorizontal 
Wire Section 30 to 18 (AWG) 0.2 to 0.75 (mm²)
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Operating Temperature -40 °C up to +105 °C
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Length10.56 mm
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PackagingBox 
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885012208067
SPECWCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
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Capacitance3.3 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size1206 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance0.2 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Height1.6 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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885012214003
SPECWCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
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Capacitance4.7 µF
Capacitance±10% 
Rated Voltage100 V (DC)
Size2220 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance0.02 GΩ
Ceramic TypeX7R Class II 
Length5.7 mm
Width5 mm
Height2.5 mm
Pad Dimension0.85 mm
Packaging7" Tape & Reel 
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