AP7312-1830FM-7 Equivalent & Substitute Parts

Part Overview

The AP7312-1830FM-7 is a linear voltage regulator IC from Diodes Incorporated designed for power management applications. This dual-output positive fixed regulator operates with a maximum input voltage of 6V and provides fixed output voltages of 1.8V and 3V, each capable of delivering 150mA. The device is currently in active production status and is widely used in portable electronics, IoT devices, and low-power applications requiring multiple regulated supply rails. Finding equivalent or substitute parts is necessary for supply chain continuity, design flexibility, and procurement optimization.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Part Number	AP7312-1830FM-7
Category	Power Management (PMIC)
Output Configuration	Positive
Number of Regulators	2
Output Voltages	1.8V, 3V (Fixed)
Output Current	150mA per output
Input Voltage (Max)	6V
Dropout Voltage (Max)	0.3V @ 150mA (1.8V), 0.2V @ 150mA (3V)
Quiescent Current	80 µA
PSRR	65dB (1kHz)
Package	6-UFDFN Exposed Pad (U-DFN2018-6)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C to 85°C
Control Features	Enable
Protection Features	Over Current, Over Temperature, Short Circuit
Product Status	Active
RoHS Compliance	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the AP7312-1830FM-7 is determined by strict equivalence across the following critical parameters:

Dual-output configuration with fixed positive voltage regulation
Output voltage specification: 1.8V and 3V fixed outputs
Output current capability: 150mA per output minimum
Input voltage rating: 6V maximum
Package type: 6-pin UFDFN with exposed pad (U-DFN2018-6)
Surface mount compatibility
Operating temperature range: -40°C to 85°C minimum
Protection features: Over current, over temperature, and short circuit protection
Control features: Enable pin functionality

Only parts meeting all these specifications across electrical performance, package form factor, and functional features qualify as direct substitutes.

Parameter Comparison

Parameter	AP7312-1830FM-7	Substitute Status
Manufacturer	Diodes Incorporated	Primary Reference
Output Voltages (Fixed)	1.8V, 3V	Exact Match Required
Output Current	150mA per output	Minimum 150mA Required
Input Voltage (Max)	6V	6V Minimum Required
Dropout Voltage	0.3V @ 150mA (1.8V), 0.2V @ 150mA (3V)	Equivalent or Better
Package	6-UFDFN Exposed Pad	Exact Match Required
Operating Temperature	-40°C to 85°C	Full Range Required
Protection Features	OCP, OTP, SCP	All Three Required
RoHS Compliance	ROHS3 Compliant	ROHS3 Required

Engineering Selection Recommendations

The AP7312-1830FM-7 is an active product with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), making it suitable for standard manufacturing and storage conditions without special handling requirements. When selecting substitute parts, prioritize components with identical active product status and equivalent compliance certifications. The dual fixed-output configuration with integrated protection features and low quiescent current (80 µA) makes this device suitable for battery-powered and portable applications. Substitute selection must maintain exact electrical specifications and package compatibility to ensure direct PCB-level interchangeability without design modifications.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the AP7312-1830FM-7?

A: A valid substitute must provide dual fixed outputs at 1.8V and 3V, deliver 150mA per output, accept up to 6V input, use the 6-UFDFN package, include over current, over temperature, and short circuit protection, and operate across the -40°C to 85°C temperature range.

Q: Can I use a single-output regulator as a substitute?

A: No. The AP7312-1830FM-7 is a dual-output device. Single-output regulators do not provide the required dual voltage rails and are not compatible substitutes.

Q: Are there any package alternatives?

A: The 6-UFDFN Exposed Pad package is specific to this device. Alternative packages would require PCB redesign and are not considered direct substitutes.

Q: What is the significance of the 80 µA quiescent current specification?

A: The 80 µA quiescent current represents the device's standby power consumption. This specification is critical for battery-powered applications and must be matched or improved in substitute parts.

Q: Does the PSRR specification affect substitution?

A: The PSRR (Power Supply Rejection Ratio) of 65dB at 1kHz indicates noise filtering capability. Substitute parts should maintain equivalent or superior PSRR performance for noise-sensitive applications.

Q: Is MSL 1 rating important for my application?

A: MSL 1 (Unlimited) means the component has no moisture sensitivity restrictions and does not require special dry-pack storage or handling. This simplifies procurement and manufacturing logistics.

Q: Can I substitute with a higher-voltage-rated device?

A: Yes, provided all other electrical and package specifications are met. A device rated for higher input voltage (e.g., 12V or 16V) can substitute for the 6V-rated AP7312-1830FM-7 without functional impact.

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