AN7709SP Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The AN7709SP is a linear voltage regulator IC manufactured by Panasonic Electronic Components, designed to deliver a fixed 9V output at 1.2A maximum current. This Surface Mount device in TO-252-3 (DPAK) packaging is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The AN7709SP provides over-current, over-temperature, and short-circuit protection, suitable for applications requiring regulated 9V power delivery in compact form factors.

Substiute Parts

AN7709SP

Panasonic Electronic ComponentsIn Stock: 1029AN7709SP Datasheet

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BA09CC0FP-E2

Rohm SemiconductorIn Stock: 15325BA09CC0FP-E2 Datasheet

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BA80BC0FP-E2

Rohm SemiconductorIn Stock: 1611BA80BC0FP-E2 Datasheet

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BA90BC0FP-E2

Rohm SemiconductorIn Stock: 45332BA90BC0FP-E2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the AN7709SP is determined by the following critical parameters:

• Output Voltage: Must be fixed at 9V to maintain circuit compatibility
• Package Type: Must be TO-252-3 (DPAK) for direct PCB footprint compatibility
• Mounting Type: Must be Surface Mount
• Output Current Capability: Minimum 1A required; the original 1.2A specification allows for substitutes rated at 1A
• Protection Features: Over-current and over-temperature protection are mandatory
• Input Voltage Range: Must accommodate the application's supply voltage (original supports up to 20V)

The three substitute parts listed below meet these core substitution criteria while offering active product status and improved availability compared to the obsolete AN7709SP.

Parameter Comparison

Engineering Selection Recommendations

BA09CC0FP-E2 (Rohm Semiconductor) is the primary substitute for applications requiring 9V output with 1A capability. This part maintains voltage compatibility with the AN7709SP, offers active product status with ROHS3 compliance, and provides superior input voltage tolerance (25V maximum). The lower quiescent current (2.5 mA vs. 5 mA) reduces standby power consumption. Over-voltage protection adds an additional safety feature not present in the original part.

BA90BC0FP-E2 (Rohm Semiconductor) is the optimal choice for applications prioritizing low quiescent current consumption (0.5 mA). This part delivers the same 9V output voltage and maintains TO-252-3 package compatibility. Extended operating temperature range (-40°C to 105°C) supports wider environmental conditions. High inventory availability (45,300 pcs) ensures supply continuity.

BA80BC0FP-E2 (Rohm Semiconductor) is suitable only for applications where 8V output voltage is acceptable. This part is not recommended as a direct substitute for the AN7709SP due to the 1V output voltage difference, which may cause circuit malfunction in voltage-sensitive applications. Use only when circuit design permits 8V operation.

All three substitute parts are ROHS3 compliant and carry REACH Unaffected status, meeting modern environmental and regulatory requirements. All maintain identical TO-252-3 DPAK packaging for direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can BA80BC0FP-E2 replace AN7709SP directly? A: No. BA80BC0FP-E2 outputs 8V, while AN7709SP outputs 9V. Direct substitution will cause a 1V voltage drop in your circuit, potentially causing malfunction. Use only if your circuit design explicitly permits 8V operation.

Q: What is the key difference between BA09CC0FP-E2 and BA90BC0FP-E2? A: Both deliver 9V at 1A and use TO-252-3 packaging. BA90BC0FP-E2 has significantly lower quiescent current (0.5 mA vs. 2.5 mA), making it preferable for battery-powered or low-power standby applications. BA09CC0FP-E2 supports higher input voltage (25V vs. 16V) and includes over-voltage protection.

Q: Are all substitute parts pin-compatible with AN7709SP? A: Yes. All substitute parts use TO-252-3 (DPAK) packaging with identical pin configuration: 2 leads plus tab. PCB layout and footprint remain unchanged.

Q: Do the substitute parts require different PCB layout considerations? A: No. All parts maintain the same TO-252-3 package dimensions and thermal characteristics. Existing PCB designs require no modification for component substitution.

Q: Which substitute offers the best thermal performance? A: All parts use identical TO-252-3 packaging with equivalent thermal dissipation characteristics. Thermal performance differences are negligible. Selection should be based on electrical parameter requirements rather than thermal considerations.

Q: Are the substitute parts suitable for new product designs? A: Yes. BA09CC0FP-E2 and BA90BC0FP-E2 carry Active product status with ROHS3 compliance, making them suitable for new designs. BA80BC0FP-E2 is also active but outputs 8V, limiting its application scope.

Q: What is the output current derating for the substitute parts? A: All substitute parts are rated at 1A maximum output current, compared to the original 1.2A. Applications requiring current above 1A must be re-evaluated or alternative regulators selected.