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LTC1923EGN#PBF
LTC1923EGN#PBF
| Part Number | LTC1923EGN#PBF |
|---|---|
| Manufacturer | Analog Devices Inc. (Linear Technology) |
| Category | Integrated Circuits (ICs) > PMIC – Thermal Management / TEC Controllers |
| Description | High-efficiency pulse-width modulated (PWM) Thermoelectric Cooler (TEC) controller, featuring bipolar current control, precision temperature regulation, and integrated fault monitoring in a 28-SSOP package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The LTC1923EGN#PBF is a high-efficiency PWM TEC controller from Analog Devices (Linear Technology), designed for precision temperature control of laser diodes, photodetectors and fiber-optic devices.
Its synchronous H-bridge topology delivers bidirectional heating/cooling drive via a single inductor, reaching up to 90% efficiency and cutting power loss compared with linear TEC drivers. Equipped with an internal 2.5V reference, programmable current limits and error amplifier, it achieves ≤0.01°C temperature stability with external thermistor bridges.
Packaged in thermally optimized 28-SSOP, it integrates full fault protection for overcurrent, open thermistor and loop failure, widely deployed in telecom transponders and precision laser modules.
Core Advantages
High-Efficiency Bidirectional PWM Drive
Adopts fully synchronous H-bridge switching topology to realize smooth heating and cooling switching, greatly reducing heat loss and power consumption compared with linear regulators.
Ultra-Precise Temperature Regulation
Supports external PID closed-loop circuit design, enabling long-term temperature control accuracy within 0.01°C to avoid laser wavelength drift caused by temperature fluctuation.
Integrated System Diagnostics and Safety Functions
Built-in hardware alarm and over-limit protection for maximum heating/cooling current, temperature deviation and sensor disconnection, effectively preventing permanent damage to TEC devices.
Adjustable Switching Frequency & Slew Rate
Equipped with independent main oscillator, users can adjust PWM switching frequency flexibly; adjustable output slew rate suppresses EMI noise and simplifies filter circuit design.
On-Board 2.5V Precision Reference
Integrated stable 2.5V voltage reference output for thermistor divider circuits, reducing external component count and improving temperature sampling consistency.
Key Specifications
| Brand | Analog Devices / Linear Technology |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free (#PBF Suffix) |
| EDA/CAD Model | 3D STEP Models, Schematic Symbols, and PCB Layout Footprints available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | SSOP-28 (150 mil) |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Packaging Form | Original Anti-Static Tube Packing |
| Single Unit Weight | 0.316g |
| Surface Marking / Silkscreen | LTC1923EGN Marking |
| Controller Topology Class | Pulse-Width Modulated (PWM) Thermoelectric Cooler (TEC) Full H-Bridge Controller |
| Operating Voltage Supply ($V_{CC}$) | 2.7 V to 5.5 V DC Low-Voltage Input Range |
| UVLO Undervoltage Lockout | 2.4V Input Under-Voltage Shutdown Threshold |
| Internal Reference Voltage | 2.5V Precision Bandgap Reference Output |
| Typical System Drive Efficiency | Up to 90% Operational Conversion Efficiency Range |
| Temperature Stability Index | Capable of achieving ≤ 0.01°C regulation accuracy with external op-amp circuit |
| Basic Setpoint Accuracy | 0.1°C Standard Temperature Control Precision |
| Current Limit Adjustability | Independent, programmable heating and cooling pulse-by-pulse maximum threshold limits |
| TEC Protection Function | TEC Voltage Clamping, Current Soft-Start Circuit |
| Oscillator Frequency Scope | Programmable or syncable up to 1 MHz switching frequency |
| Output Slew Rate Control | Adjustable rise/fall slew rate to reduce EMI interference |
| Fault Monitoring Outputs | TEC Current, TEC Voltage, Heat/Cool State, Thermistor Open/Short Alarm Flag |
| Operating Temperature Range | -40°C to +85°C / Industrial and Telecommunication Performance Envelope |
Typical Applications
- Dense Wavelength Division Multiplexing (DWDM) Laser Diode Module Temperature Controllers
- Fiber-Optic Transponders, Telecom Erbium-Doped Fiber Amplifiers (EDFA), and Optical Transmitters
- Laboratory Laser Measurement Backplanes, Spectrometers, and Gas Chromatograph Detectors
- High-Resolution Infrared CCD Camera Thermoelectric Chillers and Thermal Imaging Arrays
- Precision Semiconductor Baseplate Conditioning Loops and Crystal Oscillator Ovens (OCXO)
- Medical Optical Test Instruments, Precision CPU Thermal Regulation Systems
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the LTC1923EGN#PBF 100% original and genuine?
A: Yes, we guarantee that all LTC1923EGN#PBF integrated circuits in our inventory are 100% brand-new, factory-original products directly from Analog Devices / Linear Technology. Every batch undergoes formal quality verification and is safely packed in original anti-static tubes or tape-and-reel to protect pin integrity.
Q2: Why is a PWM switching topology like the LTC1923 preferred over traditional linear drive methods for TEC elements?
A: Linear controllers control temperature by consuming excess power as heat inside the chip, with efficiency usually lower than 50% and severe heat dissipation issues. The LTC1923 adopts PWM H-bridge switch control with efficiency up to 90%, avoiding thermal interference from the driver to the temperature sensing unit.
Q3: What does the “#PBF” suffix signify on this part number?
A: “#PBF” stands for Pb-Free. It means the device terminals and molding compound fully comply with international environmental standards including RoHS, suitable for environmentally friendly mass production.
Q4: How can our design engineers request an official component datasheet, reference designs, or a volume commercial quotation?
A: Please submit the Quick Inquiry form on this page. Our technical sales team will evaluate your project requirements and send complete technical documents and bulk price list within 24 hours.
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