Renesas HA179L12U-TR-E

Overview

HA179L12U-TR-E from Renesas Electronics is a three-terminal negative fixed-voltage linear regulator delivering –12 V output with ±4% tolerance, 1.3 V dropout voltage, and 800 mW maximum power dissipation at Ta ≤ 25°C. It integrates overcurrent and overtemperature protection, supports 1.0–150 mA load range, and is optimized for low-noise audio supply rails and stabilized biasing in analog circuits.

For engineers reviewing the HA179L12U-TR-E datasheet, HA179L12U-TR-E pinout, HA179L12U-TR-E application, or HA179L12U-TR-E equivalent, key selection considerations include its UPAK package footprint, negative-output regulation capability, ripple rejection of 100 dB at 120 Hz, thermal derating profile, and compatibility with standard 0.33 μF input / 0.1 μF output capacitor values.

Technical Context

The HA179L12U-TR-E operates as a monolithic negative-voltage regulator using an internal bandgap reference, error amplifier, and series pass transistor. Its protection circuitry includes foldback current limiting and thermal shutdown triggered above 150°C junction temperature.

Designed for fixed-output operation without external components, it requires only two ceramic capacitors for stability: 0.33 μF at the input and 0.1 μF at the output. Line regulation is specified at 100 mV (max) over –27 V to –16 V input, and load regulation is 10 mV (max) across 1–40 mA at 25°C.

Key Specifications

Pinout & Package

HA179L12U-TR-E uses the UPAK (SC-62) surface-mount package: 4.8 mm × 3.8 mm × 0.7 mm body, 0.65 mm lead pitch, 3-terminal configuration with gull-wing leads. Mass: 0.050 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar negative fixed-voltage regulation applications.

Compared with LM7912ACDX/NOPB and MC79L12CP, HA179L12U-TR-E offers superior power density via UPAK packaging, tighter thermal derating control on alumina boards, and optimized audio-frequency ripple rejection-making it preferred for space-constrained industrial analog modules requiring stable –12 V at ≤67 mA.

Availability

HA179L12U-TR-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio signal chain power, legacy system retrofits, and embedded control board auxiliary rails requiring stable component supply and long-term lifecycle support.

Supply support for HA179L12U-TR-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a Japanese semiconductor manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.

The HA179L00 series was developed as a family of compact, protected negative-voltage regulators targeting cost-sensitive yet reliability-critical analog subsystems in test equipment, audio gear, and industrial instrumentation.

FAQ

What is the maximum input voltage rating for HA179L12U-TR-E?

The absolute maximum input voltage for HA179L12U-TR-E is –35 V, as specified in the Absolute Maximum Ratings table. Operation beyond this voltage risks permanent device failure. For reliable line regulation performance, the recommended input range is –16 V to –27 V under typical conditions, ensuring compliance with the 100 mV line regulation specification.

Does HA179L12U-TR-E require external capacitors, and if so, what values?

Yes, HA179L12U-TR-E requires two external capacitors: a 0.33 μF ceramic capacitor at the input and a 0.1 μF ceramic capacitor at the output. These values are validated in the datasheet's Standard Circuit diagram and Electrical Characteristics test conditions. Placement within 5 mm of the respective pins is critical to maintain stability and achieve specified ripple rejection.

Is HA179L12U-TR-E RoHS compliant and lead-free?

Yes, HA179L12U-TR-E is RoHS compliant and lead-free. This is confirmed by Renesas' product documentation and packaging code PLZZ0004CA-A, which corresponds to the UPAK package used in RoHS-compliant manufacturing. The "-TR-E" suffix aligns with Renesas' standard RoHS-compliant tape-and-reel ordering designation.

How does the thermal performance of HA179L12U-TR-E compare between mounted and non-mounted conditions?

HA179L12U-TR-E achieves 800 mW maximum power dissipation when mounted on a 15 mm × 25 mm × 0.7 mm alumina ceramic board at Ta ≤ 25°C. In non-mounted (free-air) conditions, its derated power capability drops significantly-consistent with standard UPAK thermal resistance characteristics. Derating is 6.4 mW/°C above 25°C ambient in mounted configuration.

Can HA179L12U-TR-E be used in place of HA179L12U-TL?

Yes, HA179L12U-TR-E is functionally identical to HA179L12U-TL. Both share the same UPAK package, –12 V output, ±4% tolerance, and electrical specifications. The "-TR-E" suffix denotes Renesas' standard RoHS-compliant tape-and-reel packaging with 1,000 pcs/reel-equivalent to the "-TL" taping abbreviation referenced in the datasheet's ordering information table.