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Texas Instruments TPS65218B1PHPT
- Part No.:
- TPS65218B1PHPT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 48-PowerTQFP
- Datasheet:
-
TPS65218B1PHPT.pdf
- Description:
- IC REG ARM A8/A9 7OUT 48HTQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS65218B1PHPT from Texas Instruments is a highly integrated power management IC (PMIC) designed for ARM® Cortex™-A8/A9 SoCs and FPGAs in industrial and portable applications. It integrates six DC-DC converters (three adjustable buck, one buck-boost, two low-IQ backup rails), one adjustable LDO, three load switches, supervisor logic, and I²C control (address 0x24). Key confirmed specs include DCDC1–DCDC3 rated at 1.8 A with 0.85–1.675 V adjustability, DCDC4 delivering 1.6 A at 3.3 V default, and operation across –40°C to +105°C.
For engineers reviewing the TPS65218B1PHPT datasheet, TPS65218B1PHPT pinout, TPS65218B1PHPT application, or TPS65218B1PHPT equivalent, this page delivers verified electrical parameters, thermal performance data, I²C register mapping context, power-good behavior per rail, and real-world implementation constraints for HMI, ePOS, and industrial automation designs.
Technical Context
The TPS65218B1PHPT implements independent regulation domains: main supply (DCDC1–DCDC4, LDO1, LS1–LS3) and battery-backup domain (DCDC5/DCDC6), each with dedicated PGOOD outputs (PGOOD and PGOOD_BU). Its I²C interface supports dynamic voltage scaling and sequencing control, with configurable power-up defaults via DC34_SEL and PB monitoring for system wake-up.
Supervision includes ±4% tolerance on DCDC1/DCDC2, ±5% on DCDC3/DCDC4/LDO1, UVLO with hysteresis, overtemperature warning/shutdown, and separate nPFO output tied to PFI resistor divider. All DC-DCs feature active output discharge and 100% duty-cycle capability for ultra-low dropout operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V–5.5 V for DCDC1–DCDC4 and LDO1; 2.2 V–5.5 V for DCDC5/DCDC6 - supports Li-ion battery and 5-V adapter inputs simultaneously. |
| DCDC1–DCDC3 Output | 1.1 V / 1.1 V / 1.2 V default, 0.85–1.675 V / 0.85–1.675 V / 0.9–3.4 V adjustable - enables precise core/memory rail tuning for Cortex-A8/A9 SoCs. |
| DCDC4 Output | 3.3 V default, 1.175–3.4 V adjustable, 1.6 A max - provides flexible I/O or peripheral rail with buck-boost topology for wide VIN variation. |
| DCDC5/DCDC6 Output | 1.0 V / 1.8 V fixed, 25 mA max - low-quiescent current backup rails powered from system or coin-cell battery (CC/SYS_BU path). |
| LDO1 Output | 1.8 V default, 0.9–3.4 V adjustable, 400 mA max, 445 mA short-circuit limit - supplies noise-sensitive analog or interface circuitry with tight regulation. |
| I²C Address | 0x24 (7-bit) - enables multi-device bus configuration without address conflict in dense PMIC systems. |
| Operating Temperature | –40°C to +105°C - qualified for extended industrial environments including factory automation and test equipment. |
Pinout & Package
TPS65218B1PHPT uses a 48-pin VQFN package (RSL variant) with 6.00 mm × 6.00 mm body size and 0.4-mm pitch, featuring an exposed thermal pad for enhanced heat dissipation in high-power-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN_DCDC1 | Main input for DCDC1 | Accepts 2.7–5.5 V input; must be decoupled near pin to support 1.8 A switching current. |
| FB1–FB3, FB5–FB6 | Voltage feedback nodes | Resistor-divider inputs setting output voltage; require stable PCB routing to avoid noise-induced regulation error. |
| PGOOD / PGOOD_BU | Power-good status outputs | Open-drain (PGOOD) and push-pull (PGOOD_BU) signals indicate regulation status of main and backup domains independently. |
| SDA / SCL | I²C bidirectional data/clock | Supports 400 kHz operation; require external pull-ups to VBIAS; enable dynamic rail reconfiguration and fault logging. |
| DC34_SEL | Power-up default selector | Resistor-to-ground configures whether DCDC3 or DCDC4 powers up first - critical for safe SoC boot sequencing. |
| IN_nCC | Backup source indicator | Push-pull output signaling whether DCDC5/DCDC6 are sourced from IN_BU (high) or CC (low) - used for battery health monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Independent Power-Good Outputs | PGOOD monitors DCDC1–DCDC4 and LDO1; PGOOD_BU monitors DCDC5/DCDC6 - enables granular system-level power validation without software polling. |
| Active Output Discharge | Enabled on DCDC1–DCDC4, LDO1, and LS1–LS3 - ensures rapid rail collapse during shutdown to prevent latch-up or back-powering of downstream circuitry. |
| Battery-Backup Power Path | DCDC5/DCDC6 automatically switch between IN_BU and CC sources - maintains RTC and SRAM retention during main power loss without external diode-or circuitry. |
| Configurable Load Switch Current Limits | LS2 and LS3 support 100 mA / 500 mA selection via ILIM[1:0] bits - allows optimized trade-off between inrush current control and steady-state conduction loss. |
| Always-On Push-Button Monitor | Dedicated PB input with debounced wake-up capability - eliminates need for external microcontroller GPIO monitoring during deep-sleep states. |
Applications
| Human-Machine Interface (HMI) | Industrial Automation |
|---|---|
Use Scenario: Touchscreen controller and display backlight power in panel-mounted HMIs operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Central PMIC providing sequenced 1.1-V core, 1.2-V memory, 3.3-V I/O, and 1.8-V interface rails while supervising all domains and enabling wake-on-touch via PB input. Use Value: Single-chip integration reduces BOM count by >12 discrete regulators/switches and guarantees –40°C to +105°C operation without derating. | Use Scenario: Programmable logic controller (PLC) module requiring reliable power for FPGA fabric, I/O isolation, and real-time clock during brownouts. IC Role / Device Role / Timing Role: Manages dual-domain power: main 3.3-V/1.2-V FPGA rails and always-on 1.0-V/1.8-V backup rails with automatic coin-cell switchover and PGOOD_BU assertion. Use Value: Eliminates external backup diode-or and supervisor IC; maintains SRAM state for ≥10 years on CR2032 via <1 µA DCDC5/DCDC6 quiescent current. |
| Electronic Point of Sale (ePOS) | Test and Measurement |
Use Scenario: Portable barcode scanner with Li-ion battery and USB-powered dock mode, requiring seamless transition between power sources. IC Role / Device Role / Timing Role: Regulates 1.1-V processor core, 1.8-V sensor interface, and 3.3-V communication rail; AC_DET input detects dock connection to reconfigure DCDC4 as 3.3-V USB host port supply. Use Value: AC_DET-triggered rail reconfiguration avoids firmware intervention; buck-boost DCDC4 sustains 3.3-V output even as battery drops to 2.7 V. | Use Scenario: Benchtop multimeter with isolated analog front-end, digital processing unit, and nonvolatile memory retention during power cycling. IC Role / Device Role / Timing Role: Supplies 1.2-V ADC reference, 1.8-V microcontroller core, and 3.3-V display driver; uses nPFO/PFI to trigger graceful shutdown before brownout. Use Value: Integrated power-fail comparator replaces external voltage monitor; ±4% DCDC1/DCDC2 tolerance ensures stable ADC reference under load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65217CZQQ | Same 48-pin VQFN package; identical DCDC1–DCDC4/LDO1/LS1–LS3 architecture but lacks DCDC5/DCDC6 backup rails and SYS_BU/CC power-path logic. | Suitable only for non-battery-backed applications; cannot maintain RTC/SRAM during main power loss. | Select when backup domain functionality is unnecessary and cost optimization is prioritized over retention capability. |
| TPS65910A3RSLR | 48-pin VQFN, –40°C to +105°C rating; includes six DC-DCs and three LDOs but uses different I²C address (0x2D), no DC34_SEL pin, and no dedicated PGOOD_BU output. | Requires firmware adaptation for sequencing; lacks hardware-based backup rail supervision and coin-cell auto-switchover. | Choose when existing firmware supports alternate register maps and backup retention is handled externally. |
Compared with TPS65218B1PHPT, TPS65217CZQQ omits battery-backup capability entirely, while TPS65910A3RSLR shifts backup management to software - making TPS65218B1PHPT the only option with hardware-enforced, zero-software-overhead retention for industrial edge devices.
Availability
TPS65218B1PHPT is available at Aetrix Electronics and suitable for human-machine interface (HMI), industrial automation, and electronic point-of-sale (ePOS) applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TPS65218B1PHPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with over 90 years of innovation history.
The TPS65218 product line was engineered specifically to consolidate power delivery for ARM Cortex-A8/A9 SoCs and mid-range FPGAs in space-constrained industrial and portable systems - emphasizing thermal robustness, sequencing autonomy, and battery-retention integrity.
FAQ
What is the maximum output current supported by DCDC4 in the TPS65218B1PHPT?
The TPS65218B1PHPT supports up to 1.6 A continuous output current on DCDC4, which operates as an adjustable buck-boost converter with a default output of 3.3 V and adjustable range from 1.175 V to 3.4 V. This rail is designed to maintain regulation across wide input variations typical in battery-to-adapter transition scenarios.
Does the TPS65218B1PHPT support automatic switchover between main supply and coin-cell battery?
Yes, the TPS65218B1PHPT supports automatic switchover via its integrated battery-backup power path. When main supply (IN_BU) fails, DCDC5 and DCDC6 seamlessly draw power from the coin-cell battery (CC) without external circuitry, signaled by the IN_nCC pin going low. This ensures uninterrupted operation of RTC and SRAM.
What is the I²C address of the TPS65218B1PHPT and what timing does it support?
The TPS65218B1PHPT uses a fixed 7-bit I²C address of 0x24 and supports standard-mode (100 kHz) and fast-mode (400 kHz) operation. Timing requirements specify tHOLD ≥ 0.6 µs and tLOW ≥ 1.3 µs at 400 kHz, ensuring compatibility with most microcontroller I²C peripherals without additional level-shifting.
How does the TPS65218B1PHPT handle power-good signaling for backup and main domains?
The TPS65218B1PHPT provides two independent power-good outputs: PGOOD (open-drain) monitors DCDC1–DCDC4 and LDO1, while PGOOD_BU (push-pull) monitors only DCDC5 and DCDC6. This separation allows system controllers to validate main and backup domains separately - critical for fail-safe boot and retention assurance.
Can the TPS65218B1PHPT operate across the full industrial temperature range?
Yes, the TPS65218B1PHPT is fully characterized and guaranteed to operate from –40°C to +105°C ambient temperature. This includes all DC-DC converters, LDO, load switches, supervisor functions, and I²C interface - making it suitable for uncontrolled industrial enclosures and outdoor deployed equipment.
TPS65218B1PHPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- ARM® Cortex™ -A8/A9 SOCs, FPGA
- Voltage - Input:
- 2.2V ~ 5.5V
- Number of Outputs:
- 7
- Voltage - Output:
- Multiple
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-HTQFP (7x7)
TPS65218B1PHPT FAQ
1.How can I place an order for TPS65218B1PHPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65218B1PHPT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS65218B1PHPT reliable?
The price and inventory of TPS65218B1PHPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65218B1PHPT is usually 5 days.
3.What payment methods are accepted for TPS65218B1PHPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65218B1PHPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65218B1PHPT?
TPS65218B1PHPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65218B1PHPT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS65218B1PHPT?
For technical support, including TPS65218B1PHPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65218B1PHPT requirements.
6.How does Aetrix verify that TPS65218B1PHPT is sourced from the original manufacturer or authorized distributors?
All TPS65218B1PHPT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS65218B1PHPT meets industry standards.
7.What is the process for return or replacement of TPS65218B1PHPT?
All TPS65218B1PHPT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65218B1PHPT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS65218B1PHPT part is unused and in its original packaging.
Return procedure for TPS65218B1PHPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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