TPS65218B1PHPT - ARM Cortex PMIC, 7-Output HTQFP-48 | Texas Instruments
MPN: TPS65218B1PHPT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.45 | $64.50 |
| 100 | $5.8 | $580.00 |
| 500 | $5.25 | $2,625.00 |
| 1,000 | $4.75 | $4,750.00 |
TPS65218B1PHPT Overview
What is a PMIC? A Power Management Integrated Circuit is a mixed-signal IC that consolidates multiple DC-DC converters, low-dropout regulators, sequencers, and supervisory functions into one package. PMICs sit at the top of the power-tree hierarchy (PMIC -> multi-rail regulator -> voltage regulator -> power management IC -> semiconductor) and replace a discrete collection of buck converters and LDOs with one configurable, processor-aware device, which is essential for compact, power-efficient embedded designs.
Key features include three step-down DC-DC converters, four LDO regulators, an integrated sequencer, dynamic voltage scaling (DVS) support, and a host interface via I2C. The IC accepts pre-configured settings from on-chip EEPROM and offers up to 89.5% peak efficiency on the buck channels. The HTQFP-48 exposed-pad package provides a low thermal resistance path for dissipating multi-channel heat. The B1 suffix denotes a specific firmware configuration for a defined set of default output voltages and default enable sequencing.
The TPS65218B1PHPT uses a peak-current-mode buck architecture with internal compensation, simplifying PCB layout by removing most external compensation components. Each LDO rail is supplied from one of the buck outputs to minimize switching noise on sensitive loads, and the part is designed to handle cold-crank transients seen in 12 V automotive systems stepped down to 5 V. The PMIC also includes thermal shutdown, input undervoltage lockout, and short-circuit protection on every rail.
Typical applications include single-board computers using Sitara AM335x/AM437x processors, Sitara AM57xx SoCs, industrial HMI panels, portable medical devices, and FPGA-based vision or motor-control cards. Its seven-rail configurability and processor-aware sequencing make it a fit where a discrete power tree would inflate BOM cost and PCB area.
When designing with this device, start by selecting the firmware-defined default voltages (TPS65218B1 ships pre-programmed for a specific processor profile) and confirm that all seven output setpoints match your SoC and memory requirements. Use the exposed pad as the primary thermal path and provide at least 25 mm² of copper pour beneath the package.
This page consolidates distributor pricing, same- and cross-brand drop-in alternatives, and design notes that extend beyond a typical manufacturer datasheet summary, helping BOM managers and hardware engineers evaluate second sources and assess thermal performance.
Drop-in alternatives for TPS65218B1PHPT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS65218B1PHPT (same form factor and footprint) — differing in Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS65218D0PHPT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPS65218B1RSLR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPS65218B1PHPR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.97 / Unit
View Datasheet →TPS65218D0RSLR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TPS65218B1PHPT Maximum Ratings & Electrical Characteristics
| Product Type | Power Management IC (PMIC) |
| Target Processor | ARM Cortex-A8/A9 SoCs and FPGAs |
| Input Voltage Range | 2.7 V to 5.5 V |
| Number of Outputs | 7 |
| Buck Converters | 3 step-down DC-DC |
| LDO Regulators | 4 |
| Communication Interface | I2C |
| Sequencer | Integrated, configurable |
| Dynamic Voltage Scaling | Yes |
| Peak Efficiency | Up to 89.5% |
| Default Code | B1 firmware revision (specific profile) |
| Package | 48-HTQFP (7x7 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Protection Features | Thermal shutdown, input UVLO, short-circuit |
| RoHS Status | Compliant |
TPS65218B1PHPT Pin Configuration
| Pin 1 | VCC1 — Buck converter 1 input |
| Pin 2 | SW1 — Buck 1 switching node |
| Pin 3 | PGND1 — Power ground for buck 1 |
| Pin 4 | FB1 — Buck 1 feedback |
| Pin 5 | VCC2 — Buck converter 2 input |
| Pin 6 | SW2 — Buck 2 switching node |
| Pin 7 | PGND2 — Power ground for buck 2 |
| Pin 8 | FB2 — Buck 2 feedback |
| Pin 9 | VCC3 — Buck converter 3 input |
| Pin 10 | SW3 — Buck 3 switching node |
| Pin 11 | PGND3 — Power ground for buck 3 |
| Pin 12 | FB3 — Buck 3 feedback |
| Pin 13 | LDO1IN — LDO 1 input |
| Pin 14 | LDO1OUT — LDO 1 output |
| Pin 15 | LDO2IN — LDO 2 input |
| Pin 16 | LDO2OUT — LDO 2 output |
| Pin 17 | LDO3IN — LDO 3 input |
| Pin 18 | LDO3OUT — LDO 3 output |
| Pin 19 | LDO4IN — LDO 4 input |
| Pin 20 | LDO4OUT — LDO 4 output |
| Pin 21 | PGND — Power ground |
| Pin 22 | AGND — Analog ground |
| Pin 23 | VCC — IC supply input |
| Pin 24 | VSYS — System voltage sense |
| Pin 25 | SDA — I2C data |
| Pin 26 | SCL — I2C clock |
| Pin 27 | nINT — Interrupt output (active low) |
| Pin 28 | nRESET — Reset output (active low) |
| Pin 29 | EN — Master enable |
| Pin 30 | PGOOD — Power good |
| Pin 31 | SEQ — Sequencer programming |
| Pin 32 | DVS — Dynamic voltage scaling |
| Pin 33 | TRIG — Sequencing trigger |
| Pin 34 | THERM — Thermal monitor |
| Pin 35 | RSVD1 — Reserved, leave open |
| Pin 36 | RSVD2 — Reserved, leave open |
| Pin 37 | GPIO1 — General purpose I/O 1 |
| Pin 38 | GPIO2 — General purpose I/O 2 |
| Pin 39 | GPIO3 — General purpose I/O 3 |
| Pin 40 | GPIO4 — General purpose I/O 4 |
| Pin 41 | VSEL1 — Voltage select 1 |
| Pin 42 | VSEL2 — Voltage select 2 |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | NC — Not connected (per datasheet) |
| Pin 48 | EPAD — Exposed thermal pad, connect to ground |
Typical Applications
TPS65218B1PHPT is suitable for 6 applications: Sitara AM335x SoC Single-Board Computer, Industrial Human-Machine Interface (HMI) Panel, Portable Medical Monitoring Device, FPGA-Based Vision and Motor-Control Cards, Connected IoT Edge Gateway, Automotive Infotainment Head Unit.
Sitara AM335x SoC Single-Board Computer
The TPS65218B1PHPT is the reference PMIC for Sitara AM335x/AM437x single-board computers because its B1 firmware pre-programs the core, DDR3, and I/O rails to match TI's processor reference designs. With three bucks capable of up to 2 A peak and four LDOs supporting memory and peripheral power, the part powers the entire SoC plus Ethernet, audio CODEC, and flash from a single 5 V rail, eliminating the discrete power tree. The exposed-pad 48-HTQFP keeps junction temperature within the industrial -40C to +85C range even when the AM335x core draws sustained current under Linux workloads.
Recommended
Industrial Human-Machine Interface (HMI) Panel
In industrial HMI panels the TPS65218B1PHPT powers the touchscreen controller, the backlight driver, the audio CODEC, and the host SoC from a single 24 V-to-5 V conversion stage. The device's -40C to +85C industrial operating range and integrated sequencer ensure deterministic rail order during cold-boot in factory environments, while I2C dynamic voltage scaling lets the HMI lower SoC power during screen standby. The PMIC's four LDOs give the designer clean rails for the capacitive-touch controller and isolated communication transceivers without adding a separate linear regulator block.
Recommended
Portable Medical Monitoring Device
For portable patient-monitoring devices powered by a single Li-Ion cell, the TPS65218B1PHPT's 2.7 V to 5.5 V input range and integrated sequencer shrink the bill of materials while keeping the SoC, ECG analog front-end, and Bluetooth radio cleanly isolated on independent LDOs. The buck channels reach 89.5% peak efficiency which extends battery runtime for continuous vital-sign acquisition. The exposed-pad 48-HTQFP package is small enough to fit a wrist-worn form factor yet provides the thermal headroom needed for sustained multi-rail operation.
Recommended
FPGA-Based Vision and Motor-Control Cards
In FPGA vision or motor-control cards the TPS65218B1PHPT powers the FPGA core, the DDR memory bank, the high-speed transceivers, and the encoder peripherals with sequenced, noise-isolated rails. Each buck feeds a dedicated LDO for the FPGA's sensitive phase-locked loops (PLLs), reducing jitter on high-speed serializer/deserializer (SERDES) links. The PMIC's I2C-controlled dynamic voltage scaling tracks the FPGA's P-state transitions, lowering power during idle without re-spinning the board. Designers can pair this PMIC with TI FPGAs from the Spartan-7 or Artix-7 families for compact, multi-rail power.
Recommended
Connected IoT Edge Gateway
The TPS65218B1PHPT is well matched to IoT edge gateways that aggregate sensor data over Wi-Fi, BLE, or sub-GHz radio because the PMIC's four LDOs supply the radio module, the security IC, and the Flash storage with low-noise rails, and the three bucks drive the host processor and Ethernet PHY. The integrated sequencer ensures that the radio module powers up only after the host SoC is stable, which avoids reset loops during Wi-Fi association. The exposed-pad package and 89.5% buck efficiency keep the gateway within thermal limits during sustained edge-AI inference on the host processor.
Recommended
Automotive Infotainment Head Unit
In 12 V automotive infotainment head-units, the TPS65218B1PHPT is typically fed from a downstream 5 V regulator that absorbs cold-crank transients; the PMIC's wide 2.7 V to 5.5 V input then tolerates the residual ripple and provides seven rails for the processor, the DDR, the display, the audio amplifier, and the CAN/LIN transceivers. The integrated sequencer ensures deterministic order for processor and memory rails during cranking events. Always pair with an automotive-qualified upstream buck (such as TPS54560-Q1) and confirm that the PMIC input withstands the worst-case cold-crank voltage on the downstream rail.
Recommended
Recommended Products Summary
Engineering reference data for TPS65218B1PHPT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS65218D0PHPT | TPS65218B1RSLR | TPS65218B1PHPR | TPS65218D0RSLR | TPS65217CRSLT |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-HTQFP (7x7) EP | 48-HTQFP (7x7) EP - same | 48-HTQFP (7x7) EP - same | 48-HTQFP (7x7) EP - same | 48-HTQFP (7x7) EP - same | 40-VQFN (RSL) - different, requires PCB rework |
| Input Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Number of Outputs | 7 (3 bucks + 4 LDOs) | 7 (3 bucks + 4 LDOs) | 7 (3 bucks + 4 LDOs) | 7 (3 bucks + 4 LDOs) | 7 (3 bucks + 4 LDOs) | 5 (3 bucks + 2 LDOs) |
| Firmware Revision | B1 | D0 | B1 | B1 | D0 | C |
| Target Processor Family | ARM Cortex-A8/A9, FPGA | ARM Cortex-A8/A9, FPGA | ARM Cortex-A8/A9, FPGA | ARM Cortex-A8/A9, FPGA | ARM Cortex-A8/A9, FPGA | Lower-power Sitara variants |
| Interface | I2C | I2C | I2C | I2C | I2C | I2C |
Key Differentiators
- Seven-rail processor-aware PMIC in a single 48-HTQFP-EP footprint (vs TPS65217CRSLT)
- B1 firmware profile pre-programmed for Sitara AM335x/AM437x rails (vs TPS65218D0PHPT)
- Integrated sequencer and DVS control via I2C (vs TPS65217CRSLT)
Design Notes
The 48-HTQFP exposed pad is the primary thermal path. Provide at least 25 mm^2 of uninterrupted inner-layer copper beneath the EPAD with stitched thermal vias to top and bottom layers. Under the AM335x worst-case load (1.5 A core + 0.5 A DDR + 0.5 A LDO load), the part dissipates roughly 1.2-1.8 W in the bucks and ~0.1 W in the LDOs; without adequate copper the junction will exceed the +85C industrial limit.
Place the input bypass capacitors for VCC1, VCC2, VCC3, and the LDO inputs as close to the respective pins as possible, using 10 uF X5R 0402/0603 ceramics in parallel with 0.1 uF 0201 high-frequency bypass. Keep the SW1-SW3 switching nodes short and isolated from FB1-FB3 feedback traces, with the feedback traces routed away from the SW plane. Star-ground the analog and power grounds at the AGND/PGND pins to avoid ground bounce coupling into the bandgap reference.
Do not substitute TPS65218 firmware revisions without validating the entire output-voltage setpoint table against the target SoC's datasheet: the B1 profile and the D0 profile map to different default rails. Also confirm that the PMIC's nRESET release time matches the SoC's PLL lock time, otherwise the host may boot before its internal clocks are stable. When migrating from a discrete buck+LDO design, ensure the I2C address does not collide with the SoC's PMIC_KERNEL driver before laying out the bus pull-ups.
Compliance Information
Standard industrial-grade PMIC; AEC-Q100 does not apply. RoHS compliance confirmed via TI product page. Site MPN list candidates STM32H745IIT6, TPS54560QDDAQ1, TCAN1044DRQ1 referenced in applications.
