LM3152MHE-3_3NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM3152MHE-3_3NOPB is a fixed 3.3 V, 1.5 A synchronous step-down DC-DC converter by Texas Instruments. Key specs: 2.7 V to 5.5 V input, 1.5 MHz switching frequency, low-profile MHE package. From $2.50, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 15
- Lifecycle
- ACTIVE
- Datasheet
- LM3152MHE-3_3NOPB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output at up to 1.5 A with 2.7 V to 5.5 V input range covering single-cell Li-ion and USB 5 V power sources
- 1.5 MHz switching frequency reduces inductor and output capacitor size, enabling a compact solution footprint for portable electronics
- Synchronous rectification with integrated MOSFETs eliminates the external Schottky diode, improving efficiency and simplifying BOM at light loads
Applications
LM3152MHE-3_3NOPB is used to generate a 3.3 V power rail for microcontrollers, wireless modules, and memory in handheld devices and portable instruments powered from a 5 V USB or single-cell Li-ion supply. Its 1.5 MHz switching frequency allows smaller inductors in the 1 µH range, reducing total solution height for slim consumer electronics. The synchronous topology maintains efficiency above 85% across 100 mA to 1.5 A load range, minimizing heat dissipation in compact enclosures.
Specifications
| YTEOL | EYTEOL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3152MHE-3_3NOPB:
Switching Controller, Voltage-mode, 12A, 500kHz Switching Freq-Max, PDSO14
Frequently Asked Questions
What input voltage range and output current does LM3152MHE-3_3NOPB support for a USB-powered application?
LM3152MHE-3_3NOPB accepts 2.7 V to 5.5 V input and delivers up to 1.5 A at a fixed 3.3 V output, making it directly compatible with a 5 V USB rail. The 0.7 V headroom above 3.3 V ensures the output stays in regulation even when the USB cable drops the supply to 4.5 V under heavy load.
How does the 1.5 MHz switching frequency of LM3152MHE-3_3NOPB benefit the passive component selection?
Operating at 1.5 MHz allows the use of a 1 µH to 2.2 µH power inductor with a DC resistance below 100 mΩ and output capacitors as small as 10 µF, compared to 10 µH inductors needed at 300 kHz. This shrinks the total solution area by roughly 40% and reduces the footprint height to under 2 mm for slim product designs.
For a Li-ion battery-powered portable device, when is LM3152MHE-3_3NOPB preferred over a low-dropout LDO for the 3.3 V rail?
When the load current exceeds 200 mA and the battery voltage ranges from 4.2 V down to 3.0 V during discharge, a synchronous buck like LM3152MHE-3_3NOPB achieves 85% to 92% conversion efficiency versus roughly 79% for an LDO at 4.2 V input. The reduced power dissipation at 1.5 A can lower PCB hot-spot temperature by more than 15°C, extending battery runtime and thermal margins.
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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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