LM20136MH Texas Instruments In Stock
LM20136MH is a 1.5 A, 500 kHz synchronous step-down (buck) DC-DC converter by Texas Instruments. Key specs: 3 V to 36 V input range, adjustable output from 0.8 V, and an SOT-23-5-like MH package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide 3 V to 36 V input range covering automotive, industrial, and telecom bus voltages in a single design
- 500 kHz switching frequency enabling small 4.7 µH inductors and low-profile PCB power stages
- 1.5 A continuous output current with adjustable output voltage down to 0.8 V for flexible rail generation
Applications
The LM20136MH is ideal for point-of-load DC-DC conversion in industrial PLCs, automotive infotainment, and distributed power architectures where the input can range from 3 V to 36 V across different operating conditions. Its 500 kHz switching frequency reduces the required output inductance to as little as 4.7 µH, allowing compact power module designs in space-constrained enclosures. Adjustable output voltage starting at 0.8 V makes it versatile for powering FPGA core rails, DSP supplies, and microcontroller logic at precise low voltages.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does LM20136MH support, and which bus standards does that cover?
The LM20136MH accepts input voltages from 3 V to 36 V, covering standard 5 V USB, 12 V desktop ATX, 24 V industrial, and 28 V automotive battery buses with a single design. The wide range eliminates the need for a pre-regulator stage, reducing BOM count and improving overall efficiency in multi-bus industrial cabinets.
How does the 500 kHz switching frequency of LM20136MH affect passive component selection compared to a 200 kHz converter?
Operating at 500 kHz rather than 200 kHz roughly halves the required inductance, allowing a 4.7 µH inductor in place of a 10 µH part for the same ripple current at 1.5 A load. This means smaller, cheaper magnetics and reduced output capacitance, cutting total solution height to under 3 mm in many PCB power module designs.
For a 12 V to 3.3 V conversion at 1.5 A, what is the approximate power dissipation in LM20136MH?
With a 12 V input, 3.3 V output, and 1.5 A load, duty cycle is approximately 27.5 %. A typical synchronous buck converter at this operating point achieves 85–90 % efficiency, resulting in roughly 0.55 W to 0.87 W of power dissipation in the device. The compact MH package can handle this thermal load on a PCB copper pour without an external heat-sink.
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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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