79L09G-AB3-R – UTC -9V 100mA Negative Voltage Regulator

Quick Answer The 79L09G-AB3-R is a fixed -9V, 100mA negative voltage regulator from Unisonic Technologies (UTC). It is designed for local on-card regulation and provides excellent line and load regulation in a compact SOT-89 package. With built-in thermal overload and short circuit protection, it is ideal for dual power supply systems, analog circuits, op-amp negative rails, and industrial control applications.

Current Stock at ICMASS: Strong inventory available for immediate worldwide delivery.

Key Specifications

[Download Official 79L09 Datasheet PDF]

Why Choose 79L09G-AB3-R?

• Fixed -9V output with good regulation performance
• Low quiescent current for efficient operation
• Built-in thermal overload and short circuit protection
• Compact SOT-89 package for space-constrained designs
• Excellent line and load regulation
• Cost-effective solution for negative voltage rails
• Pb-free, RoHS compliant

Typical Applications

• Dual power supply systems (± voltage)
• Op-amp and analog circuit negative rails
• Industrial control and instrumentation
• Audio amplifiers and pre-amplifiers
• Test and measurement equipment
• Consumer electronics
• Battery-powered systems with negative voltage needs

79L09G-AB3-R Alternatives & Cross Reference Popular Alternatives:

• 79L09 series (other packages: TO-92, SOIC-8)
• LM79L09 / MC79L09 (ON Semi / TI equivalents)
• NJM79L09 (New Japan Radio)
• AMS79L09 (advanced versions)
• Fixed negative LDOs for lower dropout

Comparison Table:

Purchasing Information at ICMASS

• Stock Status: Strong inventory available
• MOQ: 100 pieces (samples welcome)
• Lead Time: 1-3 days for stock orders
• Shipping: Fast global delivery (DHL, UPS, FedEx)
• Quality Guarantee: 100% genuine UTC components

Get Competitive Quote – Contact us for bulk pricing and technical support.

Frequently Asked Questions (FAQ)

Q1: What is the 79L09G-AB3-R mainly used for? A: It is a fixed -9V negative voltage regulator used to generate negative supply rails for analog circuits and op-amps.

Q2: What is the maximum output current? A: 100mA continuous.

Q3: What package does the 79L09G-AB3-R use? A: SOT-89 (AB3) surface mount package, supplied in Tape & Reel.

Q4: What is the dropout voltage? A: Typically 1.7V at 40mA load.

Q5: Does it include protection features? A: Yes, it features internal thermal overload and short circuit protection.

Q6: Is it suitable for dual power supply applications? A: Yes, commonly paired with 78L09 for ±9V supplies.

Q7: What is the operating temperature range? A: -40°C to +125°C.

Q8: Do you have real stock of 79L09G-AB3-R? A: Yes, we maintain good inventory levels for fast delivery.

Q9: What is the typical quiescent current? A: Approximately 3.5mA.

Q10: Can you provide reference designs or layout recommendations? A: Yes, we supply official UTC datasheet and typical application circuits.

Q11: Do you offer volume pricing? A: Yes. Competitive tiered pricing is available for quantities from 1K to 100K+.

Q12: How does 79L09 compare to 79M09? A: 79L09 is 100mA low power version, while 79M09 supports higher current (up to 500mA).

Related Products

• 79Lxx series (different negative voltages: 79L05, 79L12, 79L15 etc.)
• 78Lxx positive voltage regulators
• Other UTC Linear Voltage Regulators
• Higher current negative regulators (79Mxx / LM79xx)