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M4Z28-BR00SH1
Electronics Part Number
M4Z28-BR00SH1-WXManufacturer
Texas Instruments
M4Z28-BR00SH1
Description
SnapHat battery IC, 48mAh, 28-SOICInventory
738 Pcs New Original In Stock
Memory ICs: high-density storage, fast access, low power; for embedded systems, consumer electronics, industrial computing.
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Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Manufacturer
Texas Instruments
Packaging
Tube
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Series
-
Base Product Number
TL2575
Product Status
Active
Output Type
Adjustable
Number of Outputs
1
Voltage - Input (Min)
4.75V
Voltage - Input (Max)
60V
Topology
Buck
Function
Step-Down
Supplier Device Package
16-PDIP
Voltage - Output (Max)
57V
Current - Output
1A
Output Configuration
Positive
Frequency - Switching
52kHz
Voltage - Output (Min/Fixed)
1.23V
Synchronous Rectifier
No
Data Sheet Document (D)
Datasheets
Download TL2575HV-ADJIN Product Specification (PDF)
HTML Datasheet
TL2575HV-ADJIN-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-TL2575HV-ADJIN-NDR -296-21843-5 -296-21843-5-DG TEXTISTL2575HV-ADJIN TL2575HV-ADJINE4 -TL2575HV-ADJINE4-NDR 296-21843-5 2156-TL2575HV-ADJIN -TL2575HV-ADJINE4 TL2575HV-ADJINE4-DG
Standard Package
25
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Frequently Asked Questions (FAQ)
What are the key thermal and layout considerations when designing a high-voltage buck converter with
The TL2575HV-ADJIN operates up to 60V input and can dissipate significant heat under high step-down ratios or at full 1A load, especially in the through-hole 16-DIP package which has limited thermal mass. In industrial designs, ensure adequate copper area on the PCB connected to the tab and ground pins to act as a heat spreader. Use thermal vias if mounting on a multilayer board. Maintain clearance from heat-sensitive components and consider forced airflow in enclosed systems. Poor thermal design can lead to premature shutdown or reduced lifetime—always validate junction temperature under worst-case ambient conditions using TI’s thermal resistance models (θJA ≈ 65°C/W for DIP).
Can the TL2575HV-ADJIN safely replace a failed LM2575HV-ADJ in an existing 48V-to-5V power supply de
Yes, the TL2575HV-ADJIN is a direct functional and pin-compatible upgrade over the LM2575HV-ADJ, with improved efficiency and tighter output regulation. However, verify your feedback resistor network—the TL2575HV-ADJIN has a slightly different reference voltage tolerance (±2% vs. ±4% on older LM versions), so recalculate R1/R2 values to ensure accurate 5V output. Also confirm inductor saturation current rating; the TL2575HV-ADJIN’s 52kHz switching frequency may require a slightly larger core than optimized 67kHz designs. No PCB changes are typically needed, but always revalidate transient response and stability under load.
What are the risks of using the TL2575HV-ADJIN near its maximum input voltage (60V) in automotive lo
Operating the TL2575HV-ADJIN at or near 60V during automotive load-dump events (which can exceed 40V for milliseconds) risks exceeding its absolute maximum rating and causing oxide breakdown or latch-up. Even brief overvoltage transients can degrade reliability over time. Mitigate this by adding a TVS diode (e.g., SMAJ58A) rated for 58V clamping voltage upstream, along with a series input fuse and bulk capacitance to absorb energy. Consider a pre-regulator or Zener-based clamp if sustained high-voltage conditions are expected. Always test with ISO 7637-2 pulse waveforms to ensure robustness.
How does the lack of synchronous rectification in the TL2575HV-ADJIN affect efficiency and thermal p
The TL2575HV-ADJIN uses an external Schottky diode for freewheeling, resulting in higher conduction losses—especially at low output voltages—compared to synchronous regulators like the TPS54360. At 12V-to-3.3V conversion at 1A, expect ~75% efficiency vs. >90% for the TPS54360. This inefficiency increases PCB temperature and may necessitate larger heatsinking or airflow. If your design is thermally constrained or battery-powered, consider migrating to a synchronous topology. However, the TL2575HV-ADJIN remains advantageous in high-voltage, low-complexity applications where BOM cost and simplicity outweigh efficiency needs.
Is the TL2575HV-ADJIN suitable for always-on industrial control systems operating continuously at 85
While the TL2575HV-ADJIN is rated for -40°C to 125°C junction temperature, continuous operation at 85°C ambient requires careful derating. At this temperature, reduce output current to ~0.6–0.7A (from 1A max) to keep TJ below 125°C, especially with high Vin-Vout differentials. Use TI’s Safe Operating Area (SOA) curves and account for reduced diode and inductor performance at elevated temps. Ensure adequate airflow and avoid enclosing the regulator in tight metal housings without thermal analysis. For mission-critical always-on systems, consider periodic thermal cycling tests to validate long-term reliability under real-world duty cycles.
What are the key thermal and layout considerations when designing a high-voltage buck converter with
The TL2575HV-ADJIN operates up to 60V input and can dissipate significant heat under high step-down ratios or at full 1A load, especially in the through-hole 16-DIP package which has limited thermal mass. In industrial designs, ensure adequate copper area on the PCB connected to the tab and ground pins to act as a heat spreader. Use thermal vias if mounting on a multilayer board. Maintain clearance from heat-sensitive components and consider forced airflow in enclosed systems. Poor thermal design can lead to premature shutdown or reduced lifetime—always validate junction temperature under worst-case ambient conditions using TI’s thermal resistance models (θJA ≈ 65°C/W for DIP).
Can the TL2575HV-ADJIN safely replace a failed LM2575HV-ADJ in an existing 48V-to-5V power supply de
Yes, the TL2575HV-ADJIN is a direct functional and pin-compatible upgrade over the LM2575HV-ADJ, with improved efficiency and tighter output regulation. However, verify your feedback resistor network—the TL2575HV-ADJIN has a slightly different reference voltage tolerance (±2% vs. ±4% on older LM versions), so recalculate R1/R2 values to ensure accurate 5V output. Also confirm inductor saturation current rating; the TL2575HV-ADJIN’s 52kHz switching frequency may require a slightly larger core than optimized 67kHz designs. No PCB changes are typically needed, but always revalidate transient response and stability under load.
What are the risks of using the TL2575HV-ADJIN near its maximum input voltage (60V) in automotive lo
Operating the TL2575HV-ADJIN at or near 60V during automotive load-dump events (which can exceed 40V for milliseconds) risks exceeding its absolute maximum rating and causing oxide breakdown or latch-up. Even brief overvoltage transients can degrade reliability over time. Mitigate this by adding a TVS diode (e.g., SMAJ58A) rated for 58V clamping voltage upstream, along with a series input fuse and bulk capacitance to absorb energy. Consider a pre-regulator or Zener-based clamp if sustained high-voltage conditions are expected. Always test with ISO 7637-2 pulse waveforms to ensure robustness.
How does the lack of synchronous rectification in the TL2575HV-ADJIN affect efficiency and thermal p
The TL2575HV-ADJIN uses an external Schottky diode for freewheeling, resulting in higher conduction losses—especially at low output voltages—compared to synchronous regulators like the TPS54360. At 12V-to-3.3V conversion at 1A, expect ~75% efficiency vs. >90% for the TPS54360. This inefficiency increases PCB temperature and may necessitate larger heatsinking or airflow. If your design is thermally constrained or battery-powered, consider migrating to a synchronous topology. However, the TL2575HV-ADJIN remains advantageous in high-voltage, low-complexity applications where BOM cost and simplicity outweigh efficiency needs.
Is the TL2575HV-ADJIN suitable for always-on industrial control systems operating continuously at 85
While the TL2575HV-ADJIN is rated for -40°C to 125°C junction temperature, continuous operation at 85°C ambient requires careful derating. At this temperature, reduce output current to ~0.6–0.7A (from 1A max) to keep TJ below 125°C, especially with high Vin-Vout differentials. Use TI’s Safe Operating Area (SOA) curves and account for reduced diode and inductor performance at elevated temps. Ensure adequate airflow and avoid enclosing the regulator in tight metal housings without thermal analysis. For mission-critical always-on systems, consider periodic thermal cycling tests to validate long-term reliability under real-world duty cycles.
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Sep 15 2026
