TPS51624RSMR Texas Instruments (HVQCCN) In Stock
TPS51624RSMR is a D-CAP2 PWM synchronous buck controller by Texas Instruments in a 32-pin WQFN package. Key specs: 4.5 V to 28 V input range, single-phase PWM control with adaptive on-time, and RoHS-compliant Pb-free construction. From $2.20, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- TPS51624RSMR Datasheet PDF
- Price
- From $1.9400(MOQ 99)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- D-CAP2 adaptive on-time control with 4.5 V to 28 V input range for fast transient response in low-voltage CPU and GPU power stages
- Single-phase synchronous buck controller with PWM mode enabling high-efficiency step-down regulation at switching frequencies up to several hundred kHz
- 32-pin WQFN package (JESD-30 S-PQCC-N32) introduced in 2019 with Pb-free, RoHS-compliant construction for compact high-density power designs
Applications
The TPS51624RSMR is designed for point-of-load power conversion in notebook computers, tablets, and embedded computing platforms where a 12 V or 19 V input must be stepped down to 1 V to 5 V rails powering CPUs, memory, or storage devices. Its D-CAP2 control architecture provides sub-microsecond transient response to processor load steps, minimizing output capacitance and allowing the use of smaller, lower-cost output filters. The 4.5 V to 28 V input range also makes it suitable for industrial single-board computers and embedded controllers powered from a 24 V system bus.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2019-07-23 |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 28V |
| Input Voltage-Min | 4.5V |
| JESD-30 Code | S-PQCC-N32 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 60A |
| Output Voltage-Max | 2.3V |
| Output Voltage-Min | 0.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1500kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
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 | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does TPS51624RSMR support, and which power rail sources are compatible?
TPS51624RSMR accepts input voltages from 4.5 V minimum to 28 V maximum, making it directly compatible with 5 V USB-PD adapters, 12 V ATX computer power supplies, 19 V notebook AC adapters, and 24 V industrial bus rails. A 12 V to 1.0 V conversion at 10 A output, for example, results in an 8.3% duty cycle, well within the controller's minimum on-time capability at 300 kHz switching frequency.
How does the D-CAP2 control method in TPS51624RSMR improve transient response compared with traditional voltage-mode PWM?
D-CAP2 uses adaptive on-time modulation that responds to output voltage deviations in under 1 µs, compared with the 5–10 µs settling time typical of classical voltage-mode controllers with compensation networks. This faster response allows reducing the output bulk capacitance by 30–50% for a given load step specification, directly lowering BOM cost and PCB area in notebook CPU core voltage regulators experiencing 20 A load steps.
What package does TPS51624RSMR use, and what thermal considerations apply?
TPS51624RSMR is housed in a 32-pin WQFN package (JESD-30 code S-PQCC-N32) with an exposed thermal pad on the underside. The thermal pad should be soldered to a PCB ground plane with at least 6 vias of 0.3 mm diameter to limit junction temperature rise below 40°C at 125°C ambient. The 28 V maximum input voltage also requires 40 V rated bypass capacitors within 10 mm of the VIN pin to manage switching node transients.
In what embedded or industrial computing designs is TPS51624RSMR a lower-complexity alternative to a fully integrated DC-DC module?
Single-board computers and industrial HMI panels that need a 12 V to 3.3 V or 12 V to 1.8 V point-of-load regulator benefit from TPS51624RSMR when board area for external MOSFETs and inductors is available, as the controller-plus-discrete approach costs less than a fully integrated DC-DC module at output currents above 5 A. The 4.5 V to 28 V input range covers both 12 V and 24 V industrial supply rails, avoiding the need for two separate regulators in mixed-voltage factory automation rack systems.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 99+ | $3.0400 | $300.96 |
| 500+ | $2.1900 | $1095.00 |
| 1000+ | $2.0700 | $2070.00 |
| 10000+ | $1.9400 | $19400.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”