IC reference design search
IC manufacturers Analog Devices

IC manufacturers (107)

reference designLTC3639 | Demoboard DC3017A-A

Analog Devices LTC3639 | Demoboard DC3017A-A

High Efficiency, 150V 100mA Synchronous Step-Down Regulator

Overview

TopologyLAN / POE
Input voltage55 V
Output 157 V / 0.6 A
Output 257 V / 1.92 A
Output 357 V / 0.35 A
Output 457 V / 1.2 A
IC revision03

Description

The LTC®3639 is a high efficiency step-down DC/DC regulator with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load. The LTC3639 can supply up to 100mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3639’s combination of Burst Mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. With its wide input range of 4V to 150V and programmable overvoltage lockout, the LTC3639 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC3639 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. The LTC3639 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins.

Features

  • Wide Operating Input Voltage Range: 4V to 150V
  • Synchronous Operation for Highest Efficiency
  • Internal High Side and Low Side Power MOSFETs
  • No Compensation Required
  • Adjustable 10mA to 100mA Maximum Output Current
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 12µA
  • Wide Output Range: 0.8V to VIN
  • 0.8V ±1% Feedback Voltage Reference
  • Precise RUN Pin Threshold
  • Internal or External Soft-Start
  • Programmable 1.8V, 3.3V, 5V or Adjustable Output
  • Few External Components Required
  • Programmable Input Overvoltage Lockout
  • Thermally Enhanced High Voltage MSOP Package

Typical applications

  • Industrial Control Supplies
  • Automotive
  • Medical Devices
  • Distributed Power Systems
  • Battery-Operated Devices
  • Avionics

More information

Products

Log in now to view availability and request availability forecasts. LOGIN
Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(mm)
f(mm)
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
Pins
Version
Type
H(mm)
IR(A)
Packaging
Working Voltage(V (AC))
Data rate
Ports
PoE
Improved CMRR
Operating Temperature
VT(V (RMS))
Mount
L(µH)
SamplesAvailability & Sample
Log in now to view availability and request availability forecasts. LOGIN
155060BS75300
SPECWL-SMSW SMT Mono-color Side View Waterclear, 1.6 mm, –
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Length1.6 mm
–
Dominant Wavelength [typ.]470 nm
Emitting ColorBlue 
Peak Wavelength [typ.]465 nm
Luminous Intensity [typ.]145 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
–
–
–
Height0.8 mm
–
–
–
–
–
–
–
Operating Temperature -40 °C up to +85 °C
–
MountSMT 
–
–Check availability
62000311121
SPECWR-PHD Pin Header, 6 mm, –
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
Length6 mm
–
–
–
–
–
–
–
–
Pins3 
–
TypeStraight 
–
Rated Current2 A
PackagingBag 
Working Voltage200 V (AC)
–
–
–
–
Operating Temperature -40 °C up to +105 °C
–
MountTHT 
–
–Check availability
7490220122
SPECWE-LAN LAN Transformer, 17.55 mm, –
Simu­lation
Availability
–
Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LAN LAN Transformer
Length17.55 mm
–
–
–
–
–
–
–
–
Pins24 
VersionSMT 
Type4PPoE (to 900 mA) 
Height98.8 mm
–
–
–
Data rate10/100/1000BASE-T 
Ports1 
PoE4PPoE (up to 1000 mA) 
Improved Common Mode RejectionNo 
Operating Temperature -40 °C up to +105 °C
Insulation Test Voltage1500 V (RMS)
MountSMT 
Inductance350 µH
–Check availability
702937000
SPECWA-SNSR Self-Retaining Spacer, 19.1 mm, 4.8 mm
Simu­lation–
Availability
–
Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SNSR Self-Retaining Spacer
Length19.1 mm
Drilling in Panel4.8 mm
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Operating Temperature -30 °C up to +85 °C
–
–
–
–Check availability
61202021721
SPECWR-BHD 2.54 mm Male, 33.06 mm, –

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-BHD 2.54 mm Male
Length33.06 mm
–
–
–
–
–
–
–
–
Pins20 
VersionLow Profile 
TypeAngled 
–
Rated Current3 A
PackagingTray 
Working Voltage250 V (AC)
–
–
–
–
Operating Temperature -40 °C up to +105 °C
–
MountTHT 
–
–Check availability