AN7705SP Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The AN7705SP is a linear voltage regulator IC manufactured by Panasonic Electronic Components, designed to deliver a fixed 5V output at 1.2A maximum current. This positive fixed regulator operates across an input voltage range up to 16V and includes integrated protection features for over-current, over-temperature, and short-circuit conditions. The device is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications requiring 5V regulation at comparable current levels in TO-252-3 (DPAK) surface-mount packaging.

Key Parameters

Parameter	Value
Manufacturer Part Number	AN7705SP
Manufacturer	Panasonic Electronic Components
Category	Power Management (PMIC)
Output Voltage (Fixed)	5V
Output Current	1.2A
Input Voltage (Max)	16V
Output Configuration	Positive Fixed
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Operating Temperature	25°C ~ 125°C
Product Status	Obsolete
Protection Features	Over Current, Over Temperature, Short Circuit

Substitute Part Grouping Explanation

Substitute parts for the AN7705SP are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Fixed 5V output voltage
TO-252-3 (DPAK) surface-mount package
Positive output configuration
Over-current and over-temperature protection
Operating temperature range compatibility

Substitute parts are categorized into two groups:

Group 1: Higher Current Capacity (1A output) — BA05CC0FP-E2 and BA50BC0FP-E2 from Rohm Semiconductor. These devices deliver 1A output current, which is lower than the AN7705SP's 1.2A rating but suitable for applications not requiring the full 1.2A specification.

Group 2: Lower Current Capacity (100mA output) — LM2931ADT50R (STMicroelectronics), SM72238TDX-5.0/NOPB, SM72238TDE-5.0/NOPB, and SM72238TD-5.0/NOPB (Texas Instruments and National Semiconductor). These devices deliver 100mA output current and are suitable only for applications with reduced current requirements.

Parameter Comparison

Parameter	AN7705SP	BA05CC0FP-E2	BA50BC0FP-E2	LM2931ADT50R	SM72238TDX-5.0/NOPB	SM72238TDE-5.0/NOPB	SM72238TD-5.0/NOPB
Manufacturer	Panasonic	Rohm	Rohm	STMicroelectronics	Texas Instruments	National Semiconductor	Texas Instruments
Output Voltage	5V	5V	5V	5V	5V	5V	5V
Output Current	1.2A	1A	1A	100mA	100mA	100mA	100mA
Input Voltage (Max)	16V	25V	16V	26V	30V	30V	30V
Quiescent Current (Iq)	5 mA	2.5 mA	0.5 mA	1 mA	140 µA	140 µA	140 µA
PSRR (120Hz)	70dB	55dB	—	75dB	—	—	—
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Operating Temperature	25°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Over Voltage	Over Current, Over Temperature	Current Limit, Thermal Shutdown	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	Vendor Undefined	Vendor Undefined

Engineering Selection Recommendations

For applications requiring 1A output current: BA05CC0FP-E2 and BA50BC0FP-E2 are active, production-qualified alternatives. BA05CC0FP-E2 offers extended input voltage tolerance (25V maximum) and wider operating temperature range (-40°C to 125°C). BA50BC0FP-E2 matches the AN7705SP's 16V maximum input specification and features significantly lower quiescent current (0.5 mA). Both devices carry ROHS3 compliance and MSL-1 moisture sensitivity ratings, supporting high-reliability applications.

For applications requiring 100mA output current: LM2931ADT50R, SM72238TDX-5.0/NOPB, SM72238TDE-5.0/NOPB, and SM72238TD-5.0/NOPB are suitable alternatives. LM2931ADT50R provides the highest PSRR specification (75dB at 120Hz) and is ROHS3 compliant with MSL-1 rating. The SM72238 series devices feature ultra-low quiescent current (140 µA) and higher maximum input voltage (30V), with SM72238TDX-5.0/NOPB offering ROHS3 compliance and MSL-2 rating for controlled moisture environments.

All substitute parts are active products with established supply chains, eliminating obsolescence risk associated with the AN7705SP.

Frequently Asked Questions (FAQ)

Q: Can BA05CC0FP-E2 or BA50BC0FP-E2 directly replace AN7705SP in all applications?

A: These 1A-rated devices are suitable for applications where output current does not exceed 1A. If your circuit requires the full 1.2A specification of the AN7705SP, these substitutes will not provide adequate current capacity. Verify your actual load current requirement before selection.

Q: Why do the SM72238 series devices have lower output current (100mA) compared to the AN7705SP (1.2A)?

A: The SM72238 series is designed for micropower applications with significantly lower quiescent current (140 µA) and higher input voltage tolerance (30V maximum). These devices are suitable only for low-current regulation circuits. Applications requiring 1.2A output must use BA05CC0FP-E2 or BA50BC0FP-E2.

Q: Are all substitute parts compatible with the same PCB layout as AN7705SP?

A: Yes. All substitute parts use identical TO-252-3 (DPAK) surface-mount packaging with the same pin configuration and thermal tab design. PCB layout modifications are not required for package compatibility.

Q: What is the significance of the operating temperature range differences?

A: The AN7705SP operates from 25°C to 125°C. Most substitute parts extend the lower operating limit to -40°C, providing broader environmental compatibility. BA50BC0FP-E2 operates to 105°C maximum, which is lower than the AN7705SP specification. Verify your application's temperature requirements before selection.

Q: Which substitute offers the best power efficiency in low-current standby conditions?

A: The SM72238 series devices feature the lowest quiescent current at 140 µA, making them optimal for battery-powered or low-power standby applications. BA50BC0FP-E2 offers the next-best efficiency at 0.5 mA quiescent current. For continuous full-load operation, quiescent current differences are negligible.

Q: Are there RoHS and REACH compliance differences among the substitutes?

A: BA05CC0FP-E2, BA50BC0FP-E2, LM2931ADT50R, and SM72238TDX-5.0/NOPB carry ROHS3 compliance. SM72238TDE-5.0/NOPB and SM72238TD-5.0/NOPB do not specify RoHS status. All listed substitutes are REACH Unaffected or REACH Compliant. Verify compliance requirements for your specific application and region.

Q: What is the difference between SM72238TDX-5.0/NOPB and SM72238TD-5.0/NOPB?

A: Both devices are functionally equivalent 100mA regulators with identical electrical specifications. SM72238TDX-5.0/NOPB is supplied in Tape & Reel packaging with MSL-2 rating, while SM72238TD-5.0/NOPB is supplied in Bulk packaging with undefined MSL. Selection depends on packaging format and moisture sensitivity requirements for your manufacturing process.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message