LM5035BSQ/NOPB Texas Instruments Integrated Circuit (Other) In Stock
LM5035BSQ/NOPB is a voltage-mode PWM controller with integrated half-bridge and synchronous FET drivers for 48 V bus DC-DC conversion. Operates with 13 V to 15 V bias supply and 48 V nominal input in a 24-pin QFN package. Targets telecom, server, and industrial half-bridge converter designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 25
- Lifecycle
- OBSOLETE
- Datasheet
- LM5035BSQ/NOPB 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 LM5035BSQ/NOPB?
- Voltage-mode PWM control optimized for half-bridge topologies at 48 V nominal input
- Integrated half-bridge gate drivers eliminate external driver ICs
- Synchronous FET drive support improves converter efficiency
- 13 V to 15 V bias supply range for flexible auxiliary power
- 24-pin QFN package enables compact high-density power module layouts
- Programmable dead time and soft-start for reliable startup
What is LM5035BSQ/NOPB used for?
The LM5035BSQ/NOPB is designed for isolated DC-DC converters operating from a 48 V telecom or server bus, where its integrated half-bridge drivers reduce component count and simplify PCB layout. It suits high-density power modules in data center infrastructure, PoE power supplies, and industrial DC power distribution systems requiring regulated outputs from a nominal 48 V rail. The voltage-mode PWM architecture with synchronous rectification enables efficiencies above 90% at full load in multi-hundred-watt converter designs.
What are the specifications of LM5035BSQ/NOPB?
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 13V |
| Input Voltage-Nom | 48V |
| JESD-30 Code | R-PQCC-N24 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.16X.2,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 15V |
| Supply Voltage-Min (Vsup) | 8V |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 2000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
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 LM5035BSQ/NOPB datasheet?
LM5035BSQ/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM5035BSQ/NOPB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range is supported by the LM5035BSQ/NOPB and which power topologies benefit most from its integrated drivers?
The LM5035BSQ/NOPB operates from a 48 V nominal input bus with a 13 V to 15 V bias rail for its internal gate drive circuitry. Half-bridge and full-bridge isolated DC-DC topologies benefit most because the integrated drivers eliminate the need for discrete gate driver ICs, reducing total component count by 2 to 4 parts and shrinking board area in 100 W to 500 W converter designs.
How does synchronous FET drive capability in the LM5035BSQ/NOPB affect converter efficiency compared to diode rectification?
By driving synchronous rectifier MOSFETs on the secondary side, the LM5035BSQ/NOPB replaces Schottky diodes that typically exhibit 0.3 V to 0.5 V forward drops, reducing conduction losses at output currents above 10 A. In a 48 V to 12 V converter at 20 A load, replacing dual Schottky rectifiers with 5 mΩ MOSFETs can improve efficiency by 2% to 4%, which translates to meaningful thermal savings in compact server power modules.
For a data center 48 V bus architecture, what package and footprint does the LM5035BSQ/NOPB offer versus a competing SOIC-16 controller?
The LM5035BSQ/NOPB is housed in a 24-pin QFN package with an exposed thermal pad, providing a smaller PCB footprint than a conventional SOIC-16 while improving thermal dissipation at power levels up to several watts of controller dissipation. The QFN outline is approximately 4 mm × 4 mm, enabling higher power density in 1/16-brick and 1/8-brick form-factor modules compared to a 10 mm × 6 mm SOIC footprint.
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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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