TPS40075RHLT Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments TPS40075RHLT is a voltage-mode PWM synchronous buck controller operating from 4.5 V to 28 V input in a 20-pin QFN package. Supports adjustable output and programmable frequency up to 1 MHz for compact power supplies. Available in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- TPS40075RHLT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9451(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Voltage-mode PWM control from 4.5 V to 28 V input enables flexible point-of-load buck converter designs
- Programmable switching frequency up to 1 MHz reduces external inductor and capacitor size for compact layouts
- 20-pin QFN (R-PQCC-N20) lead-free package with exposed thermal pad for enhanced thermal dissipation
Applications
The TPS40075RHLT is designed for synchronous buck point-of-load converters in telecom, networking, and industrial equipment operating from 12 V or 24 V buses. Its 4.5 V to 28 V input range and programmable switching frequency up to 1 MHz make it well suited for converting intermediate bus voltages to core rails in FPGAs, DSPs, and ASICs. The device also fits server and workstation power designs where high efficiency and precise voltage regulation are required.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 28V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 20A |
| Output Voltage-Max | 23V |
| Output Voltage-Min | 0.7V |
| Output Voltage-Nom | 8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the TPS40075RHLT support for synchronous buck converter designs?
The TPS40075RHLT operates over a 4.5 V to 28 V input voltage range, with 12 V as the nominal operating point. This broad range covers single-cell lithium-ion battery stacks, 12 V ATX rails, and 24 V industrial buses, making the controller versatile for telecom, server, and industrial point-of-load applications without component changes.
What switching frequency range does the TPS40075RHLT support and how does frequency affect inductor selection?
The TPS40075RHLT supports a programmable switching frequency from approximately 100 kHz to 1 MHz set by a single resistor. At 1 MHz, an output inductor for a 12 V to 1.8 V, 10 A converter can be as small as 1 µH, reducing component height to under 2 mm and cutting total filter volume by over 60% compared to a 200 kHz design.
Which control mode does the TPS40075RHLT use and what are its loop stability advantages?
The TPS40075RHLT uses voltage-mode pulse width modulation (PWM) control, which provides a fixed switching frequency and simplifies compensation design using a type-III error amplifier. Voltage-mode control achieves better noise immunity than current-mode in high-di/dt environments such as FPGA core rails, and the external compensation network allows loop bandwidth up to one-tenth of the switching frequency, typically 100 kHz at 1 MHz switching.
What package does the TPS40075RHLT use and why is the thermal pad important for high-current designs?
The TPS40075RHLT is housed in a 20-pin QFN package (JESD-30 code R-PQCC-N20) with an exposed thermal pad on the bottom. The thermal pad connects directly to the PCB ground plane, providing a junction-to-board thermal resistance of approximately 20 °C/W, which keeps the controller junction below 125 °C even when driving external FETs switching 20 A continuous through a 28 V input buck stage.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.1360 | $5.14 |
| 10+ | $4.1650 | $41.65 |
| 25+ | $3.8428 | $96.07 |
| 50+ | $2.1261 | $106.31 |
| 150+ | $2.0356 | $305.34 |
| 250+ | $1.9451 | $486.28 |
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