The LT1175IQ#TRPBF is a negative micropower low‑dropout (LDO) linear voltage regulator manufactured by Analog Devices (Linear Technology)
Specifications
Manufacturer:
Analog Devices Inc.
Product Number:
LT1175IQ#TRPBF
Description:
IC REG LIN NEG ADJ 500MA DDPAK-5
Highlight:
negative micropower LDO voltage regulator
,LT1175IQ linear voltage regulator
,Analog Devices low-dropout regulator
Introduction
LT1175IQ#TRPBF Negative Micropower LDO Linear Voltage Regulator
The LT1175IQ#TRPBF is a negative micropower low-dropout (LDO) linear voltage regulator manufactured by Analog Devices (Linear Technology), designed for high-performance applications requiring stable negative voltage regulation.
Core Functions & Features
- Negative Voltage Regulation: Provides stable, adjustable negative output voltage (range: -3.8V to -19.3V) or fixed -5V version with maximum output current of 500mA
- Micropower Operation: Extremely low quiescent current of 45 μA (typical), dropping to 10 μA in shutdown mode for extended battery life
- Low Dropout Voltage: Achieves very low dropout (typically ~500mV at 500mA load) via unique power transistor anti-saturation design
- Flexible Shutdown Control: SHDN pin compatible with both positive and negative logic levels for versatile system integration
- Adjustable Current Limit: User-selectable current limits: 200mA, 400mA, 600mA, 800mA for load and regulator protection
- Reverse Voltage Tolerance: Output withstands reverse voltage without damage or latch-up for enhanced system reliability
- Precision DC Performance: Advanced reference amplifier topology ensures tight DC accuracy and excellent loop stability
- Comprehensive Protection: Integrates current limiting, power limiting, thermal shutdown, and anti-blowout protection
- Wide Operating Range: Input voltage up to -20V; operating junction temperature: -40°C to 125°C
Typical Applications
- Battery-powered portable devices: handheld meters, portable medical instruments, remote sensors, and field test equipment
- Precision analog systems: high-performance instrumentation, data acquisition systems, and precision sensor interfaces
- Mixed-signal circuits: powering analog front-ends, A/D & D/A converters, and interface drivers in communication and industrial systems
- Split-rail power supplies: paired with positive LDOs to generate symmetric ±V rails for op-amps and analog circuits
- Industrial control & automotive: stable negative voltage sources for PLCs, factory automation, and in-vehicle electronics
- Modems & communication equipment: low-noise negative power for RF and baseband circuits
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