ST LM317D2T-TR Adjustable Linear Voltage Regulator, 1.5A Output Current, 1.2V-37V Output Range, SOT-223 Package, Overcurrent Protection, for Industrial/Consumer Electronics
Category:
Integrated Circuits ICs
Payment Method:
T/T
Specifications
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Introduction
ST LM317D2T-TR Adjustable Linear Voltage Regulator
High-performance three-terminal adjustable linear voltage regulator with 1.5A output current, 1.2V-37V output range, and comprehensive protection features for industrial and consumer electronics applications.
Product Overview
The ST LM317D2T-TR from STMicroelectronics is a versatile power management component featuring wide adjustable output voltage range, high output current capability, and excellent regulation performance. This industrial-grade regulator simplifies circuit design by eliminating the need for multiple fixed-voltage regulators.
Technical Specifications
| Category | Parameter | Value | Notes |
|---|---|---|---|
| Input & Output Characteristics | Input Voltage Range (Vin) | 2.7 V ~ 40 V DC | Adapts to various input power sources |
| Output Voltage Range (Vout) | 1.25 V ~ 37 V DC (Adjustable) | Precise adjustment via external resistor divider | |
| Maximum Output Current (Iout) | 1.5 A (Continuous, at 25 °C) | Supports medium-load applications | |
| Regulation & Ripple Performance | Line Regulation | 0.01%/V (at Iout=1 A, Vout=5 V) | Minimizes output voltage variation |
| Load Regulation | 0.1% (at Vout=5 V, Iout=10 mA ~ 1 A) | Stable output across load current range | |
| Ripple Rejection Ratio (RRR) | 80 dB (at 120 Hz, Vout=5 V) | Effective suppression of input voltage ripple | |
| Protection & Environmental | Protection Functions | OCP, OTP, SCP | Auto-limits current or shuts down on faults |
| Operating Temperature Range | -40 °C ~ +125 °C | Industrial grade reliability | |
| Package Type | TO-252 (DPAK) - Surface Mount | Compact 6.5 × 6.1 × 2.3 mm footprint |
Key Features
- Wide Adjustable Output Range: 1.25V-37V adjustable output eliminates need for multiple fixed-voltage regulators
- High Output Current: 1.5A continuous output supports medium-load applications
- Excellent Regulation: 0.01%/V line regulation and 0.1% load regulation for stable power supply
- Strong Ripple Suppression: 80dB ripple rejection for clean DC output
- Comprehensive Protection: Over-current, over-temperature, and short-circuit protection
- Industrial Reliability: -40°C to +125°C operating temperature range
- Easy Integration: Minimal external components and SMT-compatible package
Typical Applications
Consumer Electronics: Smartphones, laptops, tablets, and home appliances for voltage regulation of internal modules.
Industrial Control: PLCs, sensors, and motion control systems converting industrial power to precise voltages.
Power Supply Equipment: Bench power supplies and battery chargers with adjustable output stage.
Automotive Electronics: IVI systems and instrument clusters with protection against extreme temperatures.
Medical Equipment: Portable devices requiring precise and stable voltage for accurate measurements.
Lighting Systems: LED lighting and automotive lighting with current regulation and thermal protection.
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MOQ:
1pcs
