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Overview
| Topology | Other Topology |
| Input voltage | 3.1-15 V |
| Switching frequency | 500-3000 kHz |
| Output 1 | 4 A |
Description
Demonstration circuit 3145A demonstrates a high efficiency thermoelectric cooler driver and features the LT8722 monolithic driver.The input voltage range of the DC3145A is from 3.1V to 15V and the output is a SPI programmable differential voltage output. The maximum output current is 4A. The switching frequency SPI programmable from 500kHz to 3MHz.The LT8722 is controlled through an SPI interface and therefore the demonstration circuit is also setup to interface through SPI. For demonstration purposes the manual provides instruction on how to connect the DC2026C Linduino board to monitor and control the DC3145A with a PC using a command line Arduino IDE interface.
Features
- 25-Bit Digital Output Voltage Control
- Wide Input Voltage Range: 3.1V to 15V
- ±4A Output Current
- High Output Power: Up to 54W1
- High Efficiency at High Frequency
- 92.6% Efficiency at 4A, 15VIN, fSW = 3MHz
- SPI Interface Allows User to:
- Set Output Regulation Voltage
- Set Output Current Limits
- Check Device Status
- Enable/Disable Output
- Integrated 4A Power Switches
- Silent Switcher® Architecture
- Analog Output for Diagnostics/Telemetry
- Adjustable and Synchronizable: 500kHz to 3MHz
- Small 3mm × 3mm 18-Lead LQFN
Typical applications
- Driving a Thermo Electric Cooler (TEC) with Fine Control, Transmit Optical Sub-Assembly (TOSA) Cooling, Erbium Doped Fiber Amplifier (EDFA) Temperature Regulation, Photonic Integrated Circuit (PIC) Cooling, LiDAR Mirror Control, Motor Control
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (DC)) | Endurance(h) | IRIPPLE(mA) | RESR(mΩ) | ILeak(µA) | DF(%) | Ø D(mm) | Packaging | Pins | Type | Mount | L(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-PSLP Aluminum Polymer Capacitors, 22 µF, 25 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-PSLP Aluminum Polymer Capacitors | Capacitance22 µF | Rated Voltage25 V (DC) | Endurance 2000 | Ripple Current2200 mA | ESR35 mΩ | Leakage Current600 µA | Dissipation Factor8 % | Diameter6.3 mm | Packaging15" Tape & Reel | – | – | MountV-Chip SMT | Length5.8 mm | – | – | Operating Temperature -55 °C up to +105 °C | ||||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | PackagingBag | Pins2 | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | PackagingBag | Pins3 | TypeStraight | MountTHT | Length6 mm | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |