TPS62175DQCR/BKN Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
The TPS62175DQCR/BKN is a high-efficiency synchronous step-down (buck) DC-DC converter capable of accepting input voltages up to 28 V and delivering up to 500 mA output current with an adjustable output voltage down to 0.9 V. It features a proprietary SNOOZE mode for ultra-low quiescent current at light loads, enabling high efficiency across a wide load range in a compact small-outline no-lead package. Designed for industrial, building automation, and wide-input-range power systems requiring efficient 24 V bus step-down regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 11
- Lifecycle
- ACTIVE
- Datasheet
- TPS62175DQCR/BKN Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input voltage range: 4 V to 28 V for direct 24 V industrial bus operation
- Up to 500 mA output current with adjustable output voltage from 0.9 V
- SNOOZE mode for ultra-low quiescent current at light loads, boosting light-load efficiency
- Synchronous rectification for high efficiency across the full load range
- Integrated power MOSFETs eliminate external switching transistors
- Compact small-outline no-lead package minimizes BOM and PCB footprint
Applications
The TPS62175DQCR/BKN is well suited for industrial sensor nodes, building automation controllers, and smart meters powered directly from a 24 V system bus, where it efficiently steps down the supply to 3.3 V or 5 V for microcontrollers and communication ICs. Its 28 V input rating also covers automotive 12 V and 24 V battery systems for powering low-power ECU subsystems and telematics modules. The SNOOZE mode makes it a strong candidate for energy-harvesting and always-on IoT edge devices that spend most of their time in deep sleep with sub-milliampere load currents.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS62175DQCR/BKN:
Switching Regulator, Current/voltage-mode, 0.5A, 1000kHz Switching Freq-Max, PDSO10
Switching Regulator, Current/voltage-mode, 0.5A, 1000kHz Switching Freq-Max, PDSO10
Switching Regulator, Current/voltage-mode, 0.5A, 1000kHz Switching Freq-Max, PDSO10
Frequently Asked Questions
How does SNOOZE mode in TPS62175DQCR/BKN improve battery life in low-duty-cycle IoT designs?
In SNOOZE mode, TPS62175DQCR/BKN reduces its quiescent current to a few microamperes by entering a pulse-skipping state when the load current drops below a threshold. This means a device drawing only 10 µA in sleep mode sees very little overhead from the regulator itself, extending battery life significantly compared to a converter with a fixed 100 µA quiescent current. For an IoT sensor polling once per minute, SNOOZE mode can extend a 1000 mAh battery lifetime by weeks.
Can TPS62175DQCR/BKN directly step down a 24 V industrial rail to 3.3 V for a microcontroller?
Yes, TPS62175DQCR/BKN accepts input voltages from 4 V to 28 V, covering the 24 V nominal industrial bus which may swing between 20 V and 28 V in practice. At 24 V input and 3.3 V output with a 500 mA load, it achieves a 7.3:1 step-down ratio. The synchronous rectification and internal MOSFETs maintain efficiency above 80% at full load, reducing heat dissipation and eliminating the need for a separate 5 V pre-regulation stage.
What is the minimum output voltage achievable with TPS62175DQCR/BKN, and which loads require this setting?
TPS62175DQCR/BKN can regulate its output down to 0.9 V through an external resistor divider on the feedback pin. This minimum output voltage is useful for powering low-voltage FPGA core rails, DDR SDRAM VDDQ at 1.2 V or 1.35 V, and modern ARM Cortex-M microcontrollers with 1.0 V to 1.2 V core supplies. The sub-1 V capability makes it flexible for next-generation low-power SoC platforms in connected industrial and wearable applications.
For a building automation controller powered from a 24 V bus, how does TPS62175DQCR/BKN handle input voltage transients above 24 V?
TPS62175DQCR/BKN is rated for a maximum input voltage of 28 V, providing a 4 V margin above a nominal 24 V industrial bus. Industrial 24 V supplies can exhibit transients of 1 V to 2 V during load switching, and the 28 V absolute maximum allows the regulator to survive standard EN 61000-4-5 surge events without damage. For more severe transients, a TVS diode rated between 28 V and 33 V can be added at the input to clamp spikes before they reach the IC.
How many external components does TPS62175DQCR/BKN require for a complete 24 V to 5 V, 500 mA power supply?
A complete TPS62175DQCR/BKN step-down supply typically requires an input capacitor of 10 µF, an output inductor of 6.8 µH to 10 µH, an output capacitor of 22 µF, and two resistors for the feedback divider to set the 5 V output — totaling approximately 5 to 6 passive components plus the IC. The integrated power MOSFETs and internal compensation eliminate the need for external transistors or compensation networks, keeping the BOM small and the PCB footprint under 50 mm² for most 500 mA designs.
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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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