LM828M5 Equivalent & Substitute Parts

Part Overview

The LM828M5 is a charge pump switching regulator IC manufactured by Texas Instruments, designed for power management applications requiring positive or negative fixed output voltage generation. This Surface Mount device operates across a 1.8V to 5.5V input range with a fixed 25mA output current and 12kHz switching frequency. The part is currently in Last Time Buy status, indicating production discontinuation. Identifying qualified substitute components ensures design continuity and supply chain reliability for applications dependent on this topology and electrical performance.

Substiute Parts

LM828M5

Texas InstrumentsIn Stock: 1692LM828M5 Datasheet

Current PartRFQ

LM828M5/NOPB

Texas InstrumentsIn Stock: 29425LM828M5/NOPB Datasheet

MFR RecommendedRFQ

MAX828EUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5360MAX828EUK+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM828M5 is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Topology: Charge Pump
• Package / Case: SC-74A, SOT-753 (SOT-23-5)
• Output Type: Fixed
• Number of Outputs: 1
• Current - Output: 25mA
• Frequency - Switching: 12kHz
• Operating Temperature Range: -40°C ~ 85°C minimum
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Voltage Compatibility Consideration: The LM828M5 supports dual output configurations (Positive or Negative, -Vin or 2Vin). Substitute parts must maintain compatibility with the required output voltage configuration for the specific application circuit.

The LM828M5/NOPB (Texas Instruments) qualifies as a direct manufacturer-recommended substitute, maintaining identical electrical and mechanical specifications with Active product status. The MAX828EUK+T (Analog Devices Inc./Maxim Integrated) qualifies as a functional substitute with compatible core parameters, though output configuration is limited to Negative (-Vin) only, requiring circuit design verification for applications requiring positive output capability.

Parameter Comparison

Engineering Selection Recommendations

LM828M5/NOPB (Texas Instruments): This part is the manufacturer-recommended direct substitute. It maintains Active product status, ensuring long-term availability and supply chain stability. All electrical and mechanical parameters are identical to the LM828M5. This option is preferred for applications requiring both positive and negative output voltage configurations without design modification.

MAX828EUK+T (Analog Devices Inc./Maxim Integrated): This part qualifies as a functional substitute for applications requiring negative output voltage generation only (-Vin configuration). The input voltage minimum is 1.5V compared to 1.8V for the LM828M5, providing extended low-voltage operation capability. Active product status ensures availability. Applications requiring positive output voltage (2Vin configuration) must evaluate circuit compatibility or select the LM828M5/NOPB alternative.

Both substitute parts maintain identical switching frequency (12kHz), output current (25mA), package form factor (SOT-23-5), and compliance certifications (ROHS3, MSL 1). Selection depends on specific output voltage configuration requirements and input voltage operating range constraints.

Frequently Asked Questions (FAQ)

Q: Can the MAX828EUK+T replace the LM828M5 in all applications?

A: The MAX828EUK+T is functionally compatible only for applications requiring negative output voltage (-Vin). If your circuit design requires positive output voltage (2Vin configuration), the MAX828EUK+T is not suitable. The LM828M5/NOPB supports both configurations and is the appropriate substitute for dual-configuration requirements.

Q: What is the difference between LM828M5 and LM828M5/NOPB?

A: The LM828M5/NOPB is the manufacturer-recommended part number variant with identical electrical and mechanical specifications. The primary difference is product status: LM828M5 is Last Time Buy, while LM828M5/NOPB is Active. For new designs and ongoing production, LM828M5/NOPB is the recommended selection.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the SC-74A, SOT-753 package (SOT-23-5 supplier package) with identical pinout and footprint. Direct PCB substitution is possible from a mechanical standpoint.

Q: What is the minimum input voltage difference between these parts?

A: The MAX828EUK+T operates at a minimum input voltage of 1.5V, while both LM828M5 variants require 1.8V minimum. For applications operating below 1.8V, the MAX828EUK+T provides extended low-voltage capability, provided negative output configuration is acceptable.

Q: Are there any compliance or certification differences?

A: All three parts are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating. No compliance or certification differences exist between the parts.

Q: Which part should I select for a new design?

A: For new designs, select LM828M5/NOPB (Texas Instruments). It maintains Active product status, ensuring long-term availability and supply chain reliability. It supports both positive and negative output configurations, providing maximum design flexibility.