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Renesas HA179L08P-TZ-E
- Part No.:
- HA179L08P-TZ-E
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
HA179L08P-TZ-E.pdf
- Description:
- IC REG LINEAR 1 OUTPUT BIPOLAR
- Quantity:
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Inventory:7,996
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Product details
Overview
HA179L08P-TZ-E from Renesas Electronics is a three-terminal negative fixed-voltage linear regulator delivering –8 V output with ±4% tolerance, 800 mW maximum power dissipation, and integrated overcurrent/overtemperature protection - used in industrial power supplies for analog audio circuitry requiring low-noise bias rails.
For engineers reviewing the HA179L08P-TZ-E datasheet, HA179L08P-TZ-E pinout, HA179L08P-TZ-E application, or HA179L08P-TZ-E equivalent, key selection criteria include negative output polarity, TO-92MOD package thermal performance, ripple rejection at audio frequencies, voltage drop under load, and industrial-grade ambient temperature range (–40°C to +85°C).
Technical Context
The HA179L08P-TZ-E implements a monolithic bandgap reference-based error amplifier driving a pass transistor, with dedicated thermal shutdown and current-limit circuitry. Its internal architecture supports stable operation with only 0.33 μF input and 0.1 μF output capacitors.
It operates exclusively as a negative-output regulator: input must be more negative than output by ≥1.3 V (typical dropout), and common terminal is tied to system ground while output delivers –8 V referenced to that ground. No enable, adjust, or bypass pins are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | –8.0 V ±4% (guaranteed across 1.0–70 mA load and –40°C to +85°C ambient) |
| Line Regulation | ≤125 mV (change in VOUT when VIN varies from –23 V to –11 V at 40 mA load) |
| Load Regulation | ≤40 mV (change in VOUT when IOUT varies from 1.0 mA to 40 mA at 25°C) |
| Quiescent Current | 2.0–4.0 mA (supply current consumed during regulation, independent of load) |
| Dropout Voltage | 1.3 V (minimum |VIN – VOUT| required to maintain regulation at 40 mA) |
| Ripple Rejection | ≥65 dB at 120 Hz (attenuates input AC ripple before delivering clean –8 V DC) |
| Short-Circuit Current | 270 mA (internally limited output current during fault conditions) |
Pinout & Package
HA179L08P-TZ-E uses the TO-92MOD (PRSS0003DC-A) package: 3-pin through-hole plastic case, 0.35 g typical mass, 8.0 ± 0.5 mm height, with standard lead spacing compatible with manual soldering and wave processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Common | Ground reference node; connects to system 0 V; all internal protections and references referenced to this pin |
| 2 | Input | Negative input supply terminal; accepts –11 V to –23 V DC input for stable –8 V output |
| 3 | Output | Regulated –8 V output; requires 0.1 μF ceramic capacitor to ground for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Negative Fixed Output | Delivers precise –8 V without external resistors or feedback network - simplifies design of dual-rail analog systems |
| Audio-Optimized Ripple Rejection | ≥65 dB at 120 Hz enables clean power for op-amps, preamps, and DACs without additional filtering stages |
| Thermal & Overcurrent Protection | Shuts down safely under sustained overload or high-ambient conditions - prevents device failure in unventilated enclosures |
| Industrial Temperature Range | Specified from –40°C to +85°C ambient - suitable for factory automation, test equipment, and outdoor instrumentation |
| Low Dropout Voltage | 1.3 V typical dropout allows use with minimal input headroom - reduces heat generation vs. higher-dropout regulators |
Applications
| Audio Signal Processing | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Powering dual-supply operational amplifiers in studio-grade microphone preamplifiers and analog summing mixers. IC Role / Device Role / Timing Role: Negative rail generator providing stable –8 V bias for op-amp input/output stage symmetry and headroom. Use Value: Ripple rejection ≥65 dB at 120 Hz suppresses mains-borne noise, preserving signal-to-noise ratio in low-level analog paths. |
Use Scenario: Biasing precision bridge sensors (e.g., strain gauges, pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: Stable negative reference source for instrumentation amplifier front-ends requiring matched ±8 V rails. Use Value: ±4% output tolerance and <40 mV load regulation ensure consistent sensor excitation and ADC reference accuracy across temperature. |
| Legacy Industrial Control Systems | Test & Measurement Equipment |
Use Scenario: Replacing discrete Zener-based negative regulators in aging motor drive control boards and relay logic panels. IC Role / Device Role / Timing Role: Drop-in functional replacement for –8 V Zener diode networks, reducing component count and improving long-term drift stability. Use Value: Integrated thermal protection eliminates need for external foldback circuits - improves field reliability in sealed cabinets. |
Use Scenario: Supplying analog front-end circuitry in portable multimeters and handheld oscilloscopes with dual-rail ADCs. IC Role / Device Role / Timing Role: Low-noise negative supply for precision voltage references and analog switches in measurement signal chains. Use Value: 800 mW power dissipation rating supports continuous operation at 40 mA load without heatsinking in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar negative fixed-voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7908CT | Same –8 V output, ±2% tolerance, TO-220 package, higher 1.5 A short-circuit limit, but no guaranteed ripple rejection spec at audio frequencies | Better suited for higher-current loads (>100 mA); less optimal for noise-sensitive audio where HA179L08P-TZ-E's 65 dB rejection is critical | Select LM7908CT when thermal margin and peak current capability outweigh low-noise requirements |
| MC79L08ACP | Same –8 V output, ±5% tolerance, TO-92 package, 100 mW lower max power dissipation (700 mW), identical pinout and protection features | Valid alternative for space-constrained designs with lower power budgets; not rated for full industrial temperature range (only 0°C to +70°C) | Choose MC79L08ACP only for commercial-temperature applications where cost is prioritized over extended thermal coverage |
Compared with LM7908CT and MC79L08ACP, HA179L08P-TZ-E uniquely balances industrial temperature support, audio-grade ripple rejection, and TO-92MOD mechanical compatibility - making it optimal for noise-critical, thermally demanding embedded analog subsystems.
Availability
HA179L08P-TZ-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio signal conditioning circuits, legacy control system upgrades, and portable test equipment requiring stable component supply and long-term obsolescence management.
Supply support for HA179L08P-TZ-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 designed specifically for cost-sensitive, space-constrained industrial and audio applications needing reliable negative voltage regulation without external components - emphasizing thermal robustness and noise immunity in small-outline packages.
FAQ
What is the maximum input voltage rating for HA179L08P-TZ-E?
The absolute maximum input voltage for HA179L08P-TZ-E is –35 V, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable regulation, input should remain between –11 V and –23 V per the Electrical Characteristics test conditions - ensuring sufficient headroom above the 1.3 V dropout while avoiding excessive power dissipation in the HA179L08P-TZ-E.
Does HA179L08P-TZ-E require external capacitors to operate stably?
Yes, HA179L08P-TZ-E requires both an input capacitor (0.33 μF ceramic) and an output capacitor (0.1 μF ceramic) for stable operation, as defined in the Standard Circuit diagram and Electrical Characteristics test conditions. Omitting either capacitor may cause oscillation, poor transient response, or failure to regulate - especially under dynamic load changes typical in analog signal paths powered by HA179L08P-TZ-E.
Is HA179L08P-TZ-E pin-compatible with other TO-92 negative regulators like LM79L08?
No, HA179L08P-TZ-E is not pin-compatible with LM79L08. While both use TO-92 variants, HA179L08P-TZ-E follows the TO-92MOD pinout (1=Common, 2=Input, 3=Output), whereas LM79L08 uses standard TO-92 (1=Output, 2=Ground, 3=Input). Swapping them without PCB revision will result in incorrect connections and potential damage - HA179L08P-TZ-E must be mounted according to its documented pin assignment.
What is the thermal derating behavior of HA179L08P-TZ-E above 25°C ambient?
HA179L08P-TZ-E derates linearly above 25°C ambient: maximum power dissipation decreases by 6.4 mW per °C rise, down to zero at approximately 153°C. At 85°C ambient, usable power drops to ~420 mW. This derating ensures safe junction temperature operation and must be factored into layout decisions - such as copper area and airflow - when designing systems using HA179L08P-TZ-E in industrial enclosures.
Can HA179L08P-TZ-E be used in automotive applications?
No, HA179L08P-TZ-E is not qualified for automotive use. Renesas classifies it as a "Standard" grade product intended for industrial, office, and communications equipment - not "High Quality" grade required for transportation systems. It lacks AEC-Q100 qualification, extended temperature validation beyond +85°C, and automotive-specific reliability testing. For automotive negative regulation, a qualified alternative must be selected instead of HA179L08P-TZ-E.
HA179L08P-TZ-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HA179L08P-TZ-E FAQ
1.How can I place an order for HA179L08P-TZ-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HA179L08P-TZ-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HA179L08P-TZ-E reliable?
The price and inventory of HA179L08P-TZ-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HA179L08P-TZ-E is usually 5 days.
3.What payment methods are accepted for HA179L08P-TZ-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HA179L08P-TZ-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HA179L08P-TZ-E?
HA179L08P-TZ-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HA179L08P-TZ-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HA179L08P-TZ-E?
For technical support, including HA179L08P-TZ-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HA179L08P-TZ-E requirements.
6.How does Aetrix verify that HA179L08P-TZ-E is sourced from the original manufacturer or authorized distributors?
All HA179L08P-TZ-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HA179L08P-TZ-E meets industry standards.
7.What is the process for return or replacement of HA179L08P-TZ-E?
All HA179L08P-TZ-E units undergo pre-shipment inspection (PSI). If there is an issue with HA179L08P-TZ-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HA179L08P-TZ-E part is unused and in its original packaging.
Return procedure for HA179L08P-TZ-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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