LM5575QMH Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM5575QMH is an automotive-grade current-mode PWM buck switching regulator IC from Texas Instruments, accepting 6 V to 75 V input and delivering 1.5 A output at an adjustable voltage down to 1.225 V. It features cycle-by-cycle current limiting and thermal shutdown in a 16-pin PowerTSSOP package, ideal for 24 V and 48 V automotive and industrial step-down converters.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- LM5575QMH Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM5575QMH?
- 6 V to 75 V wide input range covering 12 V, 24 V, and 48 V bus architectures
- 1.5 A continuous output current with adjustable output down to 1.225 V
- Current-mode PWM control for inherent cycle-by-cycle current limiting
- Automotive-qualified (Q-grade) for harsh environment reliability
- 16-pin PowerTSSOP package with exposed pad for improved thermal dissipation
- Integrated gate driver and bootstrap diode reducing external component count
What is LM5575QMH used for?
The LM5575QMH is designed for step-down power conversion in automotive ECUs, telematics units, and 48 V mild-hybrid systems that need a regulated low-voltage rail from a high-voltage bus. Industrial applications include 24 V to 48 V DIN-rail power supplies and motor-drive auxiliary supplies where its 75 V input tolerance handles transient spikes. Its compact PowerTSSOP footprint and integrated gate drive simplify PCB layout in space-constrained automotive modules.
What are the specifications of LM5575QMH?
| YTEOL | 0 |
| Additional Feature | ALSO HAS ADJUSTABLE OUTPUT VOLTAGE AS LOW AS 1.225V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 75V |
| Input Voltage-Min | 6V |
| Input Voltage-Nom | 48V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 545kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM5575QMH datasheet?
LM5575QMH Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM5575QMH?
Compatible alternatives and drop-in replacements for LM5575QMH:
Switching Regulator, Current-mode, 1.5A, 500kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What input voltage range does the LM5575QMH support, and which bus architectures does it cover?
The LM5575QMH accepts inputs from 6 V to 75 V, covering standard 12 V, 24 V, and 48 V automotive and industrial bus architectures in a single design. Its 75 V maximum rating provides headroom for load-dump transients in automotive systems that can reach 60 V or more on the battery rail.
How does current-mode PWM control in the LM5575QMH protect downstream loads from overload events?
Current-mode PWM provides cycle-by-cycle current limiting: the inductor current is sensed every switching cycle, and if it exceeds the threshold the switch turns off immediately, limiting peak currents to safe levels without waiting for a full thermal shutdown. This protects both the 1.5 A rated output transistors and downstream loads from even brief overcurrent spikes in harsh automotive environments.
How does the LM5575QMH compare to the LM2596 for a 48 V to 5 V automotive step-down design?
The LM5575QMH is rated to 75 V input versus the LM2596's 40 V maximum, making it the correct choice for 48 V mild-hybrid and 24 V truck electrical systems. Both deliver up to 1.5 A output current, but the LM5575QMH is automotive Q-grade qualified across -40°C to +125°C and adds cycle-by-cycle current protection absent in the standard LM2596.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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