My Inquiry
My Account
Renesas UPC79N15H-AZ
- Part No.:
- UPC79N15H-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC79N15H-AZ.pdf
- Description:
- IC REG LINEAR FIXED STNDRD REG
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UPC79N15H-AZ from NEC Electronics is a three-terminal negative fixed-voltage linear regulator delivering −15 V output with 100 mA maximum output current, 0.9 V dropout voltage at 25°C, and 65 dB typical ripple rejection at 120 Hz. It integrates overcurrent protection and thermal shutdown, and is used in low-noise analog supply rails for op-amp biasing, sensor signal conditioning, and dual-rail instrumentation circuits.
For engineers reviewing the UPC79N15H-AZ datasheet, UPC79N15H-AZ pinout, UPC79N15H-AZ application, or UPC79N15H-AZ equivalent, key selection criteria include guaranteed −15 V output tolerance (±5% over line/load/temperature), TO-92 package thermal resistance (180°C/W), quiescent current (4.5–6.0 mA), and short-circuit current limit (25 mA at VIN = −30 V).
Technical Context
The UPC79N15H-AZ operates as a monolithic bipolar linear regulator with internal pass transistor, error amplifier, reference, and protection circuitry. Its architecture delivers fixed negative output without external components beyond input/output capacitors (≥2.2 µF and ≥1 µF respectively), and requires no feedback network.
It functions within −20°C to +85°C ambient temperature, supports input voltages from −17.5 V to −30 V, and maintains output regulation across 1 mA to 40 mA load while exhibiting 100 µVr.m.s. typical output noise (10 Hz–100 kHz) and 1.0 mV/°C temperature coefficient of output voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | −15.0 V ±5% (guaranteed over −17.5 V ≤ VIN ≤ −30 V, 1 mA ≤ IO ≤ 40 mA, −20°C ≤ TJ ≤ +125°C) |
| Max Output Current | 100 mA continuous (with thermal derating above 75°C junction) |
| Dropout Voltage | 0.9 V at 25°C (minimum headroom required between VIN and VO for regulation) |
| Ripple Rejection | 65 dB typical at 120 Hz (attenuates AC ripple on input supply before reaching output) |
| Output Noise | 100 µVr.m.s. typical (10 Hz–100 kHz bandwidth; critical for low-noise analog stages) |
| Quiescent Current | 4.5–6.0 mA (power overhead independent of load; impacts standby efficiency) |
| Thermal Resistance | 180°C/W junction-to-ambient (limits power dissipation to ~389 mW at TA = 85°C) |
Pinout & Package
UPC79N15H-AZ is housed in a 3-pin plastic SIP (TO-92) package with standard lead configuration: Pin 1 = Input (VIN), Pin 2 = Ground (GND), Pin 3 = Output (VO). The marking side view shows "79L15" as top-side laser marking. Package dimensions comply with JEDEC TO-92 outline (5.0 mm × 4.0 mm × 15.0 mm body, 1.27 mm lead pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input (VIN) | Negative DC supply input; must be ≤ −17.5 V and ≥ −30 V for stable −15 V regulation |
| Pin 2 | Ground (GND) | Reference node for both input and output; connects to system common ground plane |
| Pin 3 | Output (VO) | Regulated −15 V output; requires ≥1 µF capacitor placed within 2 cm of this pin and GND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Overcurrent Protection | Short-circuit current limited to 25 mA at VIN = −30 V, preventing damage during fault conditions |
| Thermal Shutdown | Automatically disables output when junction temperature exceeds +150°C, enabling safe recovery after cooling |
| Low Quiescent Current Drift | ΔIBIAS ≤ 0.1 mA over 1–40 mA load range, minimizing supply current variation in precision systems |
| Stable with Ceramic Output Capacitors | No ESR requirement; compatible with ≥1 µF X7R/X5R ceramics, reducing board space vs. tantalum |
| Pb-Free Construction | External electrodes and all package parts are lead-free per JIS C 0950, compliant with RoHS Directive |
Applications
| Industrial Sensor Signal Conditioning | Audio Preamp Dual-Rail Supply |
|---|---|
Use Scenario: Powering precision instrumentation amplifiers and ADC drivers in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Provides clean, stable −15 V rail for op-amp input stage biasing and reference generation. Use Value: 100 µVr.m.s. low noise ensures <0.001% added noise floor degradation in 24-bit sensor front-ends. | Use Scenario: Generating symmetrical ±15 V supplies for discrete transistor-based microphone preamplifiers. IC Role / Device Role / Timing Role: Delivers regulated negative rail independent of positive rail (e.g., LM7815), avoiding cross-talk. Use Value: 65 dB ripple rejection suppresses 120 Hz rectifier hum before entering high-gain audio paths. |
| Legacy Industrial Control I/O Modules | Test Equipment Reference Supplies |
Use Scenario: Supplying −15 V to analog output DACs and isolation amplifiers in PLC analog output cards. IC Role / Device Role / Timing Role: Serves as dedicated negative rail for current-loop drivers and opto-isolator biasing. Use Value: Guaranteed −15 V ±5% tolerance ensures consistent 4–20 mA full-scale accuracy across temperature and line variations. | Use Scenario: Providing stable bias for precision voltage references (e.g., REF5015) in multimeter and calibrator designs. IC Role / Device Role / Timing Role: Supplies low-drift negative reference voltage to reference buffer op-amps. Use Value: 1.0 mV/°C temperature coefficient enables <±0.15 mV drift over 0–70°C operating range. |
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 |
|---|---|---|---|
| LM7915CDT/NOPB | Higher max output current (1.5 A), higher dropout (2.0 V), SOIC-3 package, 72 dB ripple rejection | Better suited for higher-current loads but requires larger input–output differential and PCB real estate | Select if >100 mA load or surface-mount assembly is required; not drop-in due to different package and thermal profile |
| MC79L15ACDR2G | Same 100 mA rating, TO-92 package, but wider output tolerance (±10%), lower ripple rejection (50 dB), higher noise (150 µVr.m.s.) | Acceptable for non-critical digital logic supplies but insufficient for precision analog use | Choose only for cost-sensitive, non-analog applications where tighter regulation and lower noise are unnecessary |
Compared with LM7915CDT/NOPB and MC79L15ACDR2G, UPC79N15H-AZ offers superior noise performance (100 µVr.m.s. vs. ≥150 µVr.m.s.), tighter output tolerance (±5% vs. ±10%), and optimized thermal resistance for through-hole mounting-making it preferred for legacy-replacement analog subsystems requiring proven reliability and minimal layout change.
Availability
UPC79N15H-AZ is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, audio preamp dual-rail supply, and legacy PLC I/O module designs requiring stable component supply and long-term obsolescence support.
Supply support for UPC79N15H-AZ 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
NEC Electronics Corporation was a Japanese semiconductor manufacturer specializing in analog, logic, memory, and microcontroller ICs before merging into Renesas Electronics in 2010.
The μPC79Lxx Series was designed specifically for cost-effective, robust negative voltage regulation in industrial and instrumentation equipment where reliability, thermal stability, and low-noise operation were prioritized over high current or ultra-low dropout.
FAQ
What is the absolute maximum input voltage rating for UPC79N15H-AZ?
The absolute maximum input voltage for UPC79N15H-AZ is −35 V, as specified in the Absolute Maximum Ratings table. This applies specifically to −12 V and −15 V variants like UPC79N15H-AZ; −5 V and −8 V versions are rated to −30 V. Exceeding −35 V risks permanent device failure due to junction breakdown, even momentarily.
Does UPC79N15H-AZ require an input capacitor, and if so, what value is recommended?
Yes, UPC79N15H-AZ requires an input capacitor (CIN) when located more than a few centimeters from the main power supply filter. The datasheet recommends ≥2.2 µF ceramic or tantalum capacitor placed close to the VIN pin. This stabilizes the input under transient load changes and prevents oscillation caused by source impedance interacting with internal compensation.
Can UPC79N15H-AZ be used in parallel to increase output current capacity?
No, UPC79N15H-AZ is not designed for parallel operation. Its output voltage tolerance (±5%) and lack of current-sharing features mean paralleling units will cause unequal current distribution and possible thermal runaway. For higher current needs, select a single higher-rated regulator such as LM7915 or redesign with external pass transistors.
What is the thermal shutdown threshold and recovery behavior of UPC79N15H-AZ?
UPC79N15H-AZ activates thermal shutdown when junction temperature reaches +150°C, disabling output until TJ falls below approximately +130°C. Recovery is automatic and does not require power cycling. This protects against sustained overload or inadequate heatsinking, and the 180°C/W thermal resistance means power dissipation must stay below ~389 mW at 85°C ambient to avoid triggering shutdown.
Is UPC79N15H-AZ compatible with modern Pb-free reflow soldering processes?
UPC79N15H-AZ is Pb-free per JIS C 0950 and RoHS-compliant, but it is a through-hole TO-92 device intended for wave soldering-not reflow. The recommended process is wave soldering at ≤260°C for ≤10 seconds on leads only. Reflow profiles exceed its thermal limits and may damage the epoxy package or internal die attach.
UPC79N15H-AZ 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:
- -
UPC79N15H-AZ FAQ
1.How can I place an order for UPC79N15H-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC79N15H-AZ 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 UPC79N15H-AZ reliable?
The price and inventory of UPC79N15H-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC79N15H-AZ is usually 5 days.
3.What payment methods are accepted for UPC79N15H-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC79N15H-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC79N15H-AZ?
UPC79N15H-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC79N15H-AZ 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 UPC79N15H-AZ?
For technical support, including UPC79N15H-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC79N15H-AZ requirements.
6.How does Aetrix verify that UPC79N15H-AZ is sourced from the original manufacturer or authorized distributors?
All UPC79N15H-AZ 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 UPC79N15H-AZ meets industry standards.
7.What is the process for return or replacement of UPC79N15H-AZ?
All UPC79N15H-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC79N15H-AZ, 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 UPC79N15H-AZ part is unused and in its original packaging.
Return procedure for UPC79N15H-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UPC79N15H-AZ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
