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MAX660MX Equivalent & Substitute Parts
Part Overview
The MAX660MX is a charge pump switching regulator IC from Texas Instruments designed for power management applications. It functions as a positive or negative fixed voltage converter with a single output capable of delivering 100mA. The device operates across an input voltage range of 1.5V to 5.5V and supports dual switching frequencies of 10kHz and 80kHz.
The MAX660MX is currently classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for new designs, maintenance applications, and production continuity where legacy systems require replacement or upgrade paths.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Topology | Charge Pump |
| Output Configuration | Positive or Negative |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 1.5V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output | -Vin, 2Vin |
| Current - Output | 100mA |
| Frequency - Switching | 10kHz, 80kHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX660MX is determined by strict alignment across the following critical parameters:
- Topology: Charge Pump
- Output Configuration: Positive or Negative
- Output Type: Fixed
- Number of Outputs: 1
- Voltage - Input Range: 1.5V to 5.5V
- Voltage - Output: -Vin, 2Vin
- Current - Output: 100mA
- Switching Frequency: 10kHz, 80kHz
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Operating Temperature: -40°C ~ 85°C (TA)
The MAX660MX/NOPB qualifies as a direct substitute because it maintains identical electrical specifications, package configuration, and thermal operating range. The primary distinction is product status and compliance certification.
Parameter Comparison
| Parameter | MAX660MX | MAX660MX/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Topology | Charge Pump | Charge Pump |
| Output Configuration | Positive or Negative | Positive or Negative |
| Output Type | Fixed | Fixed |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 1.5V | 1.5V |
| Voltage - Input (Max) | 5.5V | 5.5V |
| Voltage - Output | -Vin, 2Vin | -Vin, 2Vin |
| Current - Output | 100mA | 100mA |
| Frequency - Switching | 10kHz, 80kHz | 10kHz, 80kHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MAX660MX/NOPB is the direct substitute for the MAX660MX. Both parts are electrically and mechanically identical across all specified parameters. The MAX660MX/NOPB is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance certification. The original MAX660MX, classified as obsolete, should be replaced with the MAX660MX/NOPB variant to ensure long-term supply chain reliability and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can MAX660MX/NOPB be used as a direct replacement for MAX660MX?
A: Yes. Both parts are functionally and mechanically identical. They share the same electrical specifications, output configuration, switching frequencies, and 8-SOIC package footprint. The MAX660MX/NOPB is the recommended choice due to active product status.
Q: What is the difference between MAX660MX and MAX660MX/NOPB?
A: The primary differences are product status and compliance. MAX660MX is obsolete and RoHS non-compliant. MAX660MX/NOPB is active and ROHS3 compliant. Electrical and mechanical specifications are identical.
Q: Are there any package or pinout differences?
A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and footprint compatibility.
Q: What output voltage configurations does this part support?
A: The MAX660MX and MAX660MX/NOPB support fixed output configurations of -Vin or 2Vin, depending on application requirements and circuit configuration.
Q: What is the maximum output current?
A: Both parts deliver a maximum output current of 100mA across the specified input voltage range of 1.5V to 5.5V.
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