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Analog Devices LTC3639 | Demoboard DC3017A-A
High Efficiency, 150V 100mA Synchronous Step-Down Regulator
Overview
| Topology | LAN / POE |
| Input voltage | 55 V |
| Output 1 | 57 V / 0.6 A |
| Output 2 | 57 V / 1.92 A |
| Output 3 | 57 V / 0.35 A |
| Output 4 | 57 V / 1.2 A |
| IC revision | 03 |
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
| Order Code | Datasheet | Simulation | Downloads | Product series | f (mm) | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (RMS)) | Mount | L (µH) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Pitch (mm) | L (mm) | Working Voltage (V (AC)) | Contact Resistance (mΩ) | Tol. R | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 61202021721 | SPEC | – | 6 files | WR-BHD 2.54 mm Male Angled Box Header | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | THT | – | 20 | – | – | Male | Angled | 3 | Tray | 2.54 | 33.06 | 250 | 20 | max. | |
 | 702937000 | SPEC | – | 3 files | WA-SNSR Self-Retaining Spacer | 4.8 | – | – | – | – | – | – | – | – | – | – | – | -30 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | 19.1 | – | – | – | |
 | 62000311121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | THT | – | 3 | Single | – | Pin Header | Straight | 2 | Bag | 2 | 6 | 200 | 20 | max. | |
 | 7490220122 | SPEC PCN pendingDue 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. | 8 files | WE-LAN LAN Transformer | – | – | – | – | – | – | – | – | 1000BASE-T | 1 | 4PPoE (up to 1000 mA) | No | -40 °C up to +105 °C | 1500 | SMT | 350 | 24 | – | 9.05 | – | 4PPoE (to 900 mA) | – | – | 1.27 | 18.04 | – | – | – | ||
 | 155060BS75300 | SPEC | 6 files | WL-SMSW SMT Mono-color Side View Waterclear | – | 470 | Blue | 465 | 145 | 3.2 | InGaN | 140 | – | – | – | – | -40 °C up to +85 °C | – | SMT | – | – | – | 0.8 | – | – | – | – | – | 1.6 | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 61202021721 | SPEC | – |
| 702937000 | SPEC | – |
| 62000311121 | SPEC | – |
| 7490220122 | SPEC PCN pendingDue 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. | |
| 155060BS75300 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | f (mm) | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | VT (V (RMS)) | Mount | L (µH) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Pitch (mm) | L (mm) | Working Voltage (V (AC)) | Contact Resistance (mΩ) | Tol. R | Samples |
|---|