FAN1616ADX Equivalent & Substitute Parts

Part Overview

The FAN1616ADX is a linear voltage regulator IC from onsemi, designed for positive adjustable output applications with 500mA current capability in a TO-252AA (DPAK) surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The FAN1616ADX operates across an input voltage range of up to 18V with adjustable output from 1.25V to 16.8V, incorporating over-current and over-temperature protection features suitable for general power management applications.

Key Parameters

Parameter	FAN1616ADX
Manufacturer	onsemi
Category	Power Management (PMIC)
Product Status	Obsolete
Output Configuration	Positive Adjustable
Current Output	500mA
Voltage Input (Max)	18V
Voltage Output Range	1.25V to 16.8V
Voltage Dropout (Max)	1.2V @ 500mA
PSRR	72dB (120Hz)
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C to 125°C
Package	TO-252-3 (DPAK)
Mounting Type	Surface Mount
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the FAN1616ADX is determined by the following critical parameters:

Output configuration (positive adjustable)
Number of regulators (single output)
Package type (TO-252-3 DPAK)
Mounting type (surface mount)
Operating temperature range (-40°C to 125°C)
Adjustable output voltage capability (minimum 1.25V reference)
Protection features (over-current and/or over-temperature)

The two identified substitute parts meet these core substitution criteria while offering enhanced specifications in current output capacity and input voltage handling. Both substitute parts maintain the same package footprint and thermal characteristics, enabling direct board-level replacement with potential performance improvements.

Parameter Comparison

Parameter	FAN1616ADX	NCV33269DTRKG	ZLDO1117QKTC
Manufacturer	onsemi	onsemi	Diodes Incorporated
Product Status	Obsolete	Active	Active
Output Configuration	Positive Adjustable	Positive Adjustable	Positive Adjustable
Current Output	500mA	800mA	1A
Voltage Input (Max)	18V	20V	18V
Voltage Output Range	1.25V to 16.8V	1.25V to 18.65V	1.25V to 16.65V
Voltage Dropout (Max)	1.2V @ 500mA	1.35V @ 800mA	1.35V @ 1A
PSRR	72dB (120Hz)	55dB (120Hz)	80dB (120Hz)
Protection Features	Over Current, Over Temperature	Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package	TO-252-3 (DPAK)	TO-252-3 (DPAK)	TO-252-3 (DPAK)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts are classified as active products, providing long-term availability and supply chain stability compared to the obsolete FAN1616ADX.

The NCV33269DTRKG offers increased current output (800mA) and maximum input voltage (20V) while maintaining onsemi manufacturer continuity. This part carries automotive-grade qualification (AEC-Q100) and is RoHS3 compliant, suitable for applications requiring enhanced current capacity within the same thermal package.

The ZLDO1117QKTC from Diodes Incorporated provides the highest current output (1A) and superior PSRR performance (80dB), with comprehensive protection features including short-circuit protection. This part also carries AEC-Q100 automotive qualification and RoHS3 compliance, making it suitable for noise-sensitive applications requiring higher current delivery.

Both substitute parts maintain identical package geometry and thermal characteristics, enabling direct PCB replacement. Selection between substitutes depends on specific application requirements for current capacity, input voltage range, and noise performance.

Frequently Asked Questions (FAQ)

Q: Can the NCV33269DTRKG or ZLDO1117QKTC be used as direct replacements for the FAN1616ADX?

A: Yes, both parts are direct replacements at the board level. All three devices share the TO-252-3 (DPAK) package footprint, identical pin configuration, and compatible adjustable output voltage range starting at 1.25V. No PCB modifications are required.

Q: What are the key differences between the two substitute parts?

A: The NCV33269DTRKG provides 800mA output current and supports up to 20V input voltage. The ZLDO1117QKTC delivers 1A output current with superior PSRR (80dB versus 55dB) and includes short-circuit protection. Both maintain the same operating temperature range and package specifications.

Q: Are there any compliance or qualification differences?

A: Both substitute parts are RoHS3 compliant and carry AEC-Q100 automotive qualification. The original FAN1616ADX does not specify these certifications. If your application requires automotive-grade components, both substitutes meet this requirement.

Q: How do the protection features compare?

A: The FAN1616ADX includes over-current and over-temperature protection. The NCV33269DTRKG adds short-circuit protection but removes over-current protection. The ZLDO1117QKTC includes all three protection features: over-current, over-temperature, and short-circuit protection.

Q: Which substitute should I select for a noise-sensitive application?

A: The ZLDO1117QKTC offers superior PSRR performance at 80dB (120Hz) compared to the FAN1616ADX at 72dB and the NCV33269DTRKG at 55dB, making it the preferred choice for applications requiring enhanced power supply rejection.

Q: Are there any current output limitations I should consider?

A: The FAN1616ADX is rated for 500mA maximum output. If your circuit requires higher current, the NCV33269DTRKG (800mA) or ZLDO1117QKTC (1A) provide increased capacity. Verify that your thermal design can accommodate the substitute part's power dissipation characteristics.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message