TPS7A4901DGNR Low-Dropout Regulator, SOT-223, High Reliability, Low VDO, for Precision Circuits, Genuine Components, In Stock
Category:
Integrated Circuits ICs
Payment Method:
T/T
Specifications
Highlight:
Introduction
TPS7A4901DGNR Low-Dropout Regulator, SOT-223, High Reliability, Low VDO, for Precision Circuits, Genuine Components, In Stock
Product Overview
The TPS7A4901DGNR is a high-performance, high-current low-dropout linear regulator (LDO) designed to deliver stable, ultra-low-noise power to power-hungry yet noise-sensitive electronic components. With a continuous output current capability of up to 3A—significantly higher than standard medium-power LDOs—it combines ultra-low output noise, exceptional power supply rejection ratio (PSRR), and an integrated Power Good (PG) monitoring pin.
Ideal for powering high-performance analog-to-digital converters (ADCs), digital-to-analog converters (DACs), radio frequency (RF) power modules, and high-speed microcontroller (MCU)/FPGA cores. Its wide input voltage range, low quiescent current, and robust protection suite make it suitable for battery-powered devices, industrial instrumentation, automotive ADAS (Advanced Driver Assistance Systems), and medical imaging equipment requiring reliable, high-current power regulation with minimal power loss.
Core Electrical Parameters
- Input Voltage Range: 2.7V ~ 18V, compatible with lithium-ion batteries (single/multi-cell), industrial 12V supplies, and automotive auxiliary power networks
- Output Voltage Range: Adjustable from 0.8V to VIN (via external feedback resistors), supporting core voltages of high-performance MCUs/FPGAs (e.g., 1.2V, 1.8V, 3.3V) and analog circuits
- Maximum Output Current: 3A (continuous), 4A (peak), meeting high-power demands of sensitive components like RF power amplifiers and high-resolution ADCs
- Dropout Voltage (V₀): Typical 200mV @ 3A (at V₀=3.3V), enabling efficient regulation even with small input-output voltage differences
- Output Noise: Typical 8μVrms (10Hz ~ 100kHz, at V₀=3.3V), lower than standard high-current LDOs, minimizing interference to precision analog/RF circuits
- Power Supply Rejection Ratio (PSRR): Typical 75dB @ 1kHz (at V₀=3.3V), 55dB @ 1MHz, effectively suppressing high-frequency input ripple from switching power supplies
- Quiescent Current: Typical 60μA (no-load, enabled), balancing high-current capability with low standby power for battery systems
- Operating Temperature Range: -40℃ ~ 125℃ (extended industrial/automotive grade), stable in extreme temperature environments (e.g., engine bays, industrial control cabinets)
- Package Type: TO-252-5 (DPAK) thermally enhanced package, 5-pin configuration with excellent heat dissipation (θJA ≈ 40°C/W), suitable for high-current heat management
- ESD Protection: Human-Body Model (HBM): ±2kV (all pins); Charged-Device Model (CDM): ±1kV (all pins), enhancing system robustness against electrostatic discharge
- Power Good (PG) Threshold: Typically 92% ~ 108% of nominal output voltage, providing reliable output voltage monitoring for system startup/shutdown
Core Functional Features
- 3A High-Current Capability: Supports power-hungry components (e.g., high-speed FPGAs, RF power modules) that exceed the 1A limit of standard low-noise LDOs, eliminating the need for parallel LDOs
- Ultra-Low Noise & High PSRR: Integrated noise-reduction circuitry and high-frequency PSRR suppress both low-frequency ripple (from batteries) and high-frequency noise (from switching regulators), critical for high-resolution ADCs (≥16-bit) and RF transceivers
- Adjustable Output & Power Good Monitoring: External resistor-based voltage adjustment (R1/R2) adapts to diverse system needs, while the PG pin alerts the host MCU to output voltage anomalies (e.g., under-voltage), enabling fail-safe system operation
- Enable Pin (EN) with Slow Startup: Active-high EN pin allows power sequencing (e.g., powering LDO after main supply), and slow startup (typical 1ms) prevents inrush current damage to downstream components
- Comprehensive Protection Mechanisms: Built-in overcurrent protection (OCP, 4.5A typical), thermal shutdown (TSD, 160℃ typical), reverse-current protection, and overvoltage protection (OVP, 115% of nominal V₀), safeguarding the LDO and load from abnormal conditions
- Fast Transient Response: Typical 8μs response time to 3A load steps, maintaining output voltage stability during sudden current spikes (e.g., FPGA core wake-up, ADC sampling bursts)
Typical Application Scenarios
Industrial Electronics Field
- High-resolution measurement equipment (e.g., 24-bit ADC-based data loggers, precision oscilloscopes) requiring 3A power with ultra-low noise
- Industrial IoT (IIoT) gateways with high-speed FPGAs and RF communication modules
- Motor control systems (e.g., servo drives) for powering noise-sensitive current-sensing circuits
Automotive Electronics Field
- ADAS sensors (e.g., laser radar (LiDAR), high-resolution cameras) needing stable 3A power and high PSRR to suppress automotive power ripple
- In-vehicle infotainment systems with high-performance audio amplifiers and RF tuners
- Automotive ECU (Electronic Control Unit) cores (e.g., powertrain ECUs) requiring high-current, temperature-stable regulation
Medical Electronics Field
- Portable medical devices (e.g., ultrasound scanners, portable MRI modules) with battery-powered designs and high-current analog front-ends
- Patient monitoring systems (e.g., multi-parameter vital sign monitors) powering low-noise sensor signal chains
Consumer Electronics Field
- High-end audio equipment (e.g., portable headphone amplifiers, Hi-Fi DACs) requiring ultra-low noise power
- Wearable fitness trackers with high-resolution biometric sensors (e.g., SpO₂ monitors) and low standby power
- Wireless communication devices (e.g., 5G small cells, Wi-Fi 6E routers) powering RF power amplifiers
Send RFQ
Stock:
MOQ:
1pcs
