TPSM53604RDAR - 36V 4A Step-Down Power Module | TI
MPN: TPSM53604RDAR ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TPSM53604RDAR Overview
A power module is a highly integrated point-of-load (PoL) DC/DC converter: within the broader hierarchy of power management ICs, a step-down (buck) converter reduces a higher input voltage to a lower regulated output, and a power module goes one step further by co-packaging the controller or converter IC, switching MOSFETs, inductor, and key passives into a single surface-mount package. This integration eliminates inductor selection and magnetics design from the engineering workflow, dramatically reducing board area, bill-of-materials count, and design risk compared with a discrete buck converter solution.
Key features of the TPSM53604 include its wide 3.8 V to 36 V input range, which directly supports 12-V, 24-V, and industrial 24 V nominal rails with transient headroom; an adjustable output spanning 1 V to 7 V; a continuous 4-A output current rating; and a fixed-frequency peak-current-mode control topology with optimized internal compensation. The Enhanced HotRod QFN construction places the die close to the package pins, minimizing parasitic inductance for low EMI and improved thermal performance.
Technically, the module integrates a shielded inductor that produces low radiated electromagnetic emissions, simplifying CISPR-class EMI compliance work. The thermally enhanced package dissipates heat through the PCB, and the simple footprint with all pins on the perimeter makes layout and inspection straightforward. Shutdown quiescent operation and enable functionality support low standby power designs.
Typical applications include industrial automation and PLC I/O modules, 12-V and 24-V distributed power systems, test and measurement instrumentation, telecom and networking equipment auxiliary rails, and embedded processor point-of-load supplies derived from wide-input industrial buses.
Design consideration: at high input voltages and high output current, verify junction temperature using the datasheet thermal derating curves; adequate PCB copper area beneath the module is the primary thermal solution.
This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone. Pricing shown reflects distributor data as of 2026-10-19.
Drop-in alternatives for TPSM53604RDAR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPSM53605RDAR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPSM53603RDAR
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM53602RDAR
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM53604RDAR Maximum Ratings & Electrical Characteristics
| Topology | Step-down (buck) DC/DC power module |
| Input Voltage Range | 3.8 V to 36 V |
| Output Voltage Range | 1 V to 7 V (adjustable) |
| Output Current | 4 A |
| Number of Outputs | 1 |
| Isolation | Non-isolated PoL module |
| Package | 15-pin Enhanced HotRod QFN, 5.5 mm x 5 mm x 4 mm |
| Integrated Components | Power MOSFETs, shielded inductor, passives |
| Operating Temperature | -40C to +125C |
| Mounting Type | Surface Mount |
| Control Topology | Fixed-frequency peak current mode |
| EMI Performance | Integrated shielded inductor for low radiated emissions |
TPSM53604RDAR 15-pin enhanced hotrod qfn, 5.5 mm x 5 mm x 4 mm Pin Configuration Guide
Pin configuration for TPSM53604RDAR (15-pin enhanced hotrod qfn, 5.5 mm x 5 mm x 4 mm package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPSM53604RDAR.
Refer to the datasheet for full pin configuration.
Estimated Safe Operating Area (output current vs input voltage)
Typical Applications
TPSM53604RDAR is suitable for 6 applications: Industrial Automation and PLC I/O Modules, 24-V Distributed Power Systems, Test and Measurement Instrumentation, Telecom and Networking Equipment, Embedded Processor Point-of-Load Supplies, Battery-Powered and Portable Industrial Equipment.
Industrial Automation and PLC I/O Modules
The TPSM53604RDAR fits industrial automation point-of-load conversion because its 3.8 V to 36 V input range covers 24-V nominal control cabinets with headroom for typical bus excursions, while the 4-A rating powers microcontrollers, I/O drivers, and sensor interfaces from a single module. Its integrated shielded inductor produces low radiated emissions, easing EMC compliance in dense control panels where motor drives and contactors create a noisy environment. In a PLC I/O card, the module typically sits between the 24-V field-power rail and the local 3.3-V or 5-V logic rail, requiring only input and output ceramic capacitors and a feedback divider. The small 5.5 mm x 5 mm footprint conserves board area on dense I/O cards, and the thermally enhanced QFN allows convection-cooled operation at moderate loads without a heatsink.
Recommended
24-V Distributed Power Systems
In 24-V distributed architectures, a central supply feeds multiple point-of-load regulators; the TPSM53604RDAR is well suited to this role because its 36-V maximum input tolerates distribution bus transients and its 1 V to 7 V adjustable output serves mixed-voltage subsystems. The fixed-frequency peak current mode topology simplifies paralleling of input filters and predictable cycle-by-cycle current limiting protects against branch faults. Because the module integrates the shielded inductor and MOSFETs, each PoL node needs minimal external parts, lowering per-node cost and assembly complexity across large systems. Its 4-A capacity covers typical per-board loads for networking shelves, industrial gateways, and building-control panels, while the same footprint supports the 2-A and 3-A family members where loads are lighter, enabling a single approved layout across an entire product family.
Recommended
Test and Measurement Instrumentation
Bench instruments, data-acquisition front ends, and modular instruments require clean, compact local power with minimal EMI so that measurement noise floors are not degraded. The TPSM53604RDAR addresses this with an integrated shielded inductor that reduces radiated magnetic fields compared with unshielded discrete-inductor buck designs, and a fixed switching frequency that keeps noise out of sensitive passbands through careful output filter planning. Its 4-A output powers analog front-end rails, heater elements, and embedded processors, while the 1 V to 7 V adjustability supports custom analog supply voltages. The thermally enhanced package avoids hot spots inside sealed instrument enclosures, and the perimeter-pin footprint simplifies rework during prototype bring-up, an important practical advantage when iteration speed matters in lab hardware.
Recommended
Telecom and Networking Equipment
Telecom cards and network switches commonly distribute -48 V or 24 V intermediate buses and need compact step-down conversion per card. The TPSM53604RDAR handles 24-V intermediate-bus-derived inputs within its 3.8 V to 36 V window and provides 4 A for DSPs, PHYs, and FPGA I/O rails. Its integrated shielding limits radiated EMI toward adjacent high-speed differential pairs, a frequent layout hazard in dense backplane card designs. The 5.5 mm x 5 mm x 4 mm module replaces a multi-component discrete buck section, saving layout effort on cards packed with connectors and magnetics. Designers should verify peak input transients against the 36-V limit and follow the datasheet layout for low-impedance input decoupling, which also reduces conducted emissions back onto the intermediate bus.
Recommended
Embedded Processor Point-of-Load Supplies
Modern embedded processors require well-regulated core and I/O rails at currents from hundreds of milliamps to several amps; the TPSM53604RDAR's 1 V to 7 V adjustable output and 4-A capacity cover most single-rail core or I/O needs, including 1.0-V, 1.2-V, 1.8-V, 2.5-V, and 3.3-V standards. The fixed-frequency current mode converter delivers fast transient response, important for processors with bursty load profiles, and the integrated compensation removes loop-tuning risk from the design flow. Powered from a 12-V or 24-V rail, one module replaces controller, MOSFETs, inductor, and compensation network, cutting design time and board area. The -40 C to +125 C operating range supports rugged embedded deployments, and the simple footprint eases layout near fine-pitch processor packages where routing space is scarce.
Recommended
Battery-Powered and Portable Industrial Equipment
Portable industrial tools, battery analyzers, and field instruments powered by 12-V to 24-V battery strings benefit from the TPSM53604RDAR's wide input range, which accommodates battery voltage sag and full-charge swings without external preregulation. The integrated power stage and shielded inductor reduce radiated noise near sensitive sensing circuits such as strain gauges and current shunt amplifiers. Its 4-A capability drives motors, heaters, and wireless modules, while the enable pin supports system power sequencing and low standby power when the equipment idles. The compact thermally enhanced QFN survives vibration-heavy environments better than through-hole magnetics because all components are encapsulated in one package, improving mechanical robustness. Designers should confirm thermal performance at sustained loads within sealed enclosures using the datasheet derating curves.
Recommended
Recommended Products Summary
Engineering reference data for TPSM53604RDAR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPSM53605RDAR | TPSM53603RDAR | TPSM53602RDAR |
|---|---|---|---|---|
| Package | 15-pin Enhanced HotRod QFN, 5.5 x 5 x 4 mm | 15-pin Enhanced HotRod QFN, 5.5 x 5 x 4 mm - same | 15-pin Enhanced HotRod QFN, 5.5 x 5 x 4 mm - same | 15-pin Enhanced HotRod QFN, 5.5 x 5 x 4 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 4 A | 5 A | 3 A | 2 A |
| Input Voltage Range | 3.8 V to 36 V | 3.8 V to 36 V | 3.8 V to 36 V | 3.8 V to 36 V |
| Output Voltage Range | 1 V to 7 V adjustable | 1 V to 7 V adjustable | 1 V to 7 V adjustable | 1 V to 7 V adjustable |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Pin Compatibility | Drop-in within family | Pin-to-pin compatible | Pin-to-pin compatible | Pin-to-pin compatible |
Key Differentiators
- Highest current rating in the 5.5 x 5 mm family footprint (vs TPSM53603RDAR)
- Footprint-compatible scalability across the family (vs TPSM53602RDAR)
- Fully integrated shielded inductor (vs discrete buck converter solutions)
Design Notes
The Enhanced HotRod QFN dissipates heat primarily through the PCB, so the copper pour is the heatsink. Estimated: at VIN = 24 V, VOUT = 5 V, IOUT = 4 A with an assumed 90% efficiency, power dissipation is roughly (24 x 4 / 0.9) - 5 x 4 = approximately 6.7 W, which is significant for a 5.5 x 5 mm footprint. Consult the datasheet thermal derating curves for the RDAR package and apply solid ground planes with multiple thermal vias under the module; reduce load current or add airflow at high input voltages.
Place the input ceramic capacitor (typically 10 uF per datasheet recommendation) as close as possible to the VIN and PGND pins to minimize the high-frequency switching loop; keep the loop area small to limit conducted and radiated EMI. Follow the TI datasheet recommended land pattern exactly - the perimeter-pin Enhanced HotRod footprint is designed for simple routing, and deviating from it can degrade thermal and EMI performance. Use multiple vias to a solid ground plane beneath the module for both return current and heat extraction.
Do not exceed the 36-V absolute maximum input, especially on 24-V industrial buses where load-dump style transients can exceed this level - add input TVS clamping if surges are expected. Set the output with the feedback divider per the datasheet equation and use 1%-tolerance resistors for output accuracy. Verify that the minimum input of 3.8 V is maintained at the pins under all load conditions, since upstream wiring and connector drops can pull the module out of regulation during load steps.
The integrated shielded inductor keeps radiated emissions low compared with unshielded discrete designs, but conducted emissions on the input line still require attention. Estimated: a compact pi-filter (ferrite bead plus bulk and ceramic capacitance) on the input typically brings conducted noise within CISPR-class limits for industrial equipment, but compliance must be verified by measurement since values depend on your source impedance. Keep the switching node contained under the module and avoid routing sensitive analog traces directly beneath the package.
Compliance Information
Compliance status for this specific ordering code must be confirmed on the official TI product page at ti.com/product/TPSM53604, which provides material declarations per orderable part. Data provided did not include explicit compliance statements.
