MAX797CSE Equivalent & Substitute Parts

Part Overview

The MAX797CSE is a Buck, Boost, Flyback Regulator controller IC manufactured by Analog Devices Inc./Maxim Integrated, designed for positive output step-up and step-up/step-down DC-DC conversion applications. This device operates as a transistor driver with integrated control features including enable, pulse skipping, and soft start functionality. The MAX797CSE is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

MAX797CSE

Analog Devices Inc./Maxim IntegratedIn Stock: 1242MAX797CSE Datasheet

Current PartRFQ

MAX797CSE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2823MAX797CSE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX797CSE is determined by strict equivalence across the following critical parameters:

• Topology: Buck, Boost, Flyback
• Output Type: Transistor Driver
• Function: Step-Up, Step-Up/Step-Down
• Output Configuration: Positive
• Number of Outputs: 1
• Voltage - Supply (Vcc/Vdd): 4.5V ~ 30V
• Frequency - Switching: 150kHz, 300kHz
• Duty Cycle (Max): 96%
• Synchronous Rectifier: Yes
• Clock Sync: Yes
• Control Features: Enable, Pulse Skipping, Soft Start
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 16-SOIC (0.154", 3.90mm Width)

The MAX797CSE+ meets all substitution criteria and is classified as an active product with improved compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MAX797CSE+ is the direct functional equivalent of the MAX797CSE. Both devices share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status and regulatory compliance:

• The MAX797CSE is classified as obsolete, limiting long-term availability and support.
• The MAX797CSE+ is an active product with ROHS3 compliance, providing improved regulatory alignment and sustained manufacturing support.

For new designs and production continuity, the MAX797CSE+ is the appropriate selection. Both devices are pin-compatible and functionally interchangeable within the 16-SOIC package format.

Frequently Asked Questions (FAQ)

Q: Are MAX797CSE and MAX797CSE+ pin-compatible? A: Yes. Both devices use the 16-SOIC package with identical pinout and electrical characteristics. Direct substitution is possible without circuit modification.

Q: What is the primary reason to transition from MAX797CSE to MAX797CSE+? A: The MAX797CSE is obsolete, while MAX797CSE+ is an active product. The MAX797CSE+ also meets ROHS3 compliance requirements, whereas the original MAX797CSE does not.

Q: Do the switching frequency and duty cycle specifications differ between these parts? A: No. Both devices operate at 150kHz or 300kHz switching frequencies with a maximum duty cycle of 96%.

Q: Are there any thermal or operating temperature differences? A: No. Both devices operate across the identical temperature range of 0°C to 70°C (TA).

Q: Can MAX797CSE+ be used in existing MAX797CSE designs without redesign? A: Yes. The MAX797CSE+ is a direct substitute with no circuit modifications required. Existing PCB layouts and component values remain valid.