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Texas Instruments TPS62743YFPT
- Part No.:
- TPS62743YFPT
- Manufacturer:
- Texas Instruments
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
TPS62743YFPT.pdf
- Description:
- IC REG BUCK PROG 300MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
TPS62743YFPT from Texas Instruments is a 300 mA ultra-low-quiescent-current buck converter optimized for coin-cell-powered wearables and RF-sensitive applications. It operates from 2.15 V to 5.5 V input, delivers selectable output voltages (1.2–3.3 V) via three VSEL pins, achieves 360 nA operating IQ, and enters no-ripple 100% mode when VIN approaches VOUT - enabling direct operation from a single Li-MnO₂ cell.
For engineers reviewing the TPS62743YFPT datasheet, TPS62743YFPT pinout, TPS62743YFPT application, or TPS62743YFPT equivalent, key selection criteria include its DCS-Control™ topology for RF-friendly transient response, 8-ball WCSP package (1.57 mm × 0.88 mm), 1.2 MHz switching frequency, output voltage discharge capability, and verified performance down to 10 µA load current with up to 90% efficiency.
Technical Context
The TPS62743YFPT implements TI's DCS-Control™ topology, combining hysteretic and voltage-mode control for seamless PWM-to-PFM transition, low output ripple (<10 mVpp typical), and fast load transient response. Its internal high-impedance feedback divider eliminates external resistors, while the VOS pin enables precise regulation and automatic output discharge.
Functional modes include Power Save Mode (PFM) for sub-100 µA loads, automatic 100% duty-cycle operation below VIN–VOUT = 200 mV (typ), and cycle-by-cycle overcurrent protection on both high-side (600 mA typ) and low-side MOSFETs. UVLO thresholds are 2.15 V (rising) and 2.0 V (falling), supporting stable startup from depleted coin cells.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.15 V to 5.5 V; supports full operation from fresh to depleted Li-MnO₂ coin cells (down to 2.0 V after startup) |
| Output Current | 300 mA max; sufficient for dual-core BLE SoCs and optical HR sensors without thermal derating |
| Quiescent Current | 360 nA typical; enables multi-year battery life in always-on wearable sleep modes |
| Switching Frequency | 1.2 MHz typical; allows use of tiny 2.2 µH inductors and 10 µF ceramic output capacitors |
| Output Voltage Options | Eight factory-programmable settings (1.2 V–3.3 V); selected dynamically via VSEL1–VSEL3 pins |
| Package | 8-ball DSBGA (YFP); 1.57 mm × 0.88 mm footprint, <10 mm² total solution size |
| Efficiency at 10 µA | Up to 90%; critical for energy harvesting and intermittent-sensing applications |
Pinout & Package
TPS62743YFPT uses an 8-ball DSBGA (YFP) package with 0.4-mm pitch, measuring 1.57 mm × 0.88 mm. The package is designed for minimal PCB area and optimal thermal performance in thin wearable form factors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.15–5.5 V; requires 4.7 µF ceramic capacitor placed adjacent for noise suppression |
| SW | Switch node | Connects to 2.2 µH inductor; carries high di/dt switching current; must be routed short and wide |
| GND | Power ground | Common return for input/output capacitors and IC substrate; ties to thermal pad under die |
| VOS | Feedback & discharge | Internal reference node; directly connects to output capacitor; discharges VOUT during shutdown |
| VSEL1–VSEL3 | Output voltage select | Three digital inputs setting one of eight output voltages (1.2–3.3 V); can be changed dynamically |
| EN | Enable control | Active-high logic input; must be terminated; pulls device into 70 nA shutdown mode when low |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables simultaneous high light-load efficiency (>85% at 10 µA), low output ripple (<10 mVpp), and RF-friendly operation without external compensation |
| No-ripple 100% mode | Eliminates switching noise when VIN ≤ VOUT + 200 mV (typ), preventing interference in sensitive analog/RF sections |
| Output voltage discharge | Actively sinks VOUT to GND via VOS pin during disable, ensuring clean power sequencing and repeatable startup |
| Ultra-low IQ architecture | Combines 360 nA quiescent current with integrated high-Z feedback divider and optimized PFM control for true µA-level system sleep |
| Small total solution size | Full buck regulator fits within 10 mm² using only 2.2 µH inductor, 4.7 µF input cap, and 10 µF output cap - ideal for space-constrained wearables |
Applications
| Fitness Tracker Power Management | Smartwatch BLE Subsystem |
|---|---|
Use Scenario: Continuous heart-rate monitoring with optical sensor and low-power MCU in wrist-worn form factor. IC Role / Device Role / Timing Role: Primary step-down regulator powering 1.8 V sensor interface and 3.3 V BLE radio from single CR2032 coin cell. Use Value: 360 nA IQ extends battery life beyond 12 months; no-ripple 100% mode prevents switching noise from corrupting photodiode signal integrity. |
Use Scenario: Dual-rail power delivery to ARM Cortex-M4 MCU (1.2 V core) and Bluetooth 5.0 transceiver (3.3 V I/O) in compact watch bezel. IC Role / Device Role / Timing Role: Single-inductor buck converter with dynamic VSEL reconfiguration to match processor DVFS states and radio transmit bursts. Use Value: Eight programmable outputs eliminate need for multiple regulators; DCS-Control™ ensures <50 µs transient recovery during BLE packet transmission. |
| Energy-Harvesting Wearable Node | Medical Patch Sensor |
Use Scenario: Intermittent ECG sampling powered by thermoelectric or piezoelectric harvester with micro-capacitor storage. IC Role / Device Role / Timing Role: Ultra-low-IQ DC/DC booster replacement; regulates harvested energy to stable 2.5 V for ADC and wireless wake-up circuitry. Use Value: 90% efficiency at 10 µA enables usable output even with nanoampere-level harvest currents; 2.0 V startup allows operation as harvester voltage rises slowly. |
Use Scenario: Disposable skin-adhesive patch monitoring glucose or temperature with 7-day wear requirement. IC Role / Device Role / Timing Role: Primary power source for low-noise analog front-end and sub-GHz ISM-band transmitter, operating from 3.0 V lithium button cell. Use Value: Output voltage discharge ensures safe reset between measurement cycles; RF-friendly DCS-Control™ avoids coupling into bio-amplifier input traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS627431YFPT | 400 mA output current; different VSEL voltage map (1.3–3.1 V); identical pinout and package | Required where peak RF transmit current exceeds 300 mA or tighter VOUT granularity needed | Select TPS627431YFPT only if higher output current or specific 1.3/1.4/1.6 V outputs are mandatory; otherwise TPS62743YFPT offers better cost and broader voltage coverage. |
| MAX77650ALT+T | Integrated PMIC with charger, LDOs, and 300 mA buck; 1.7 µA IQ in shutdown; 1.84 mm × 1.54 mm WLP | Used when battery charging, multiple rails, or system power management are required alongside buck conversion | Choose MAX77650ALT+T only when multi-rail integration justifies 5× higher IQ (1.7 µA vs 360 nA) and larger footprint; TPS62743YFPT remains superior for dedicated ultra-low-IQ buck needs. |
Compared with TPS627431YFPT, the TPS62743YFPT provides wider output voltage range (1.2–3.3 V vs 1.3–3.1 V) and lower BOM count for fixed-voltage designs, while MAX77650ALT+T trades ultra-low IQ for system-level integration - making TPS62743YFPT the optimal choice for standalone, space- and battery-limited wearable power rails.
Availability
TPS62743YFPT is available at Aetrix Electronics and suitable for wearable electronics, medical patch sensors, and energy-harvesting IoT nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TPS62743YFPT 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in ultra-low-power design for portable and medical electronics.
The TPS62743YFPT belongs to TI's NanoPower buck converter family, engineered specifically for battery-operated wearables and RF-critical applications where quiescent current, solution size, and noise performance dictate system viability.
FAQ
What is the minimum input voltage required for TPS62743YFPT to start up?
The TPS62743YFPT requires a minimum input voltage of 2.15 V to initiate startup due to its undervoltage lockout (UVLO) rising threshold. Once enabled, it continues operating down to 2.0 V, enabling reliable function across the full discharge curve of a CR2032 coin cell. This behavior is confirmed in Section 7.3 of the official datasheet and validated in typical application circuits using Li-MnO₂ sources.
How does the TPS62743YFPT achieve 360 nA quiescent current?
The TPS62743YFPT achieves 360 nA typical operating IQ through an ultra-low-power voltage reference, integrated high-impedance feedback divider network, and optimized Power Save Mode that shuts down non-essential circuitry during PFM sleep periods. This architecture is detailed in Section 8.3.2 and verified in Figure 7-1 of the datasheet across –40°C to 85°C.
Can the output voltage of TPS62743YFPT be changed dynamically during operation?
Yes, the TPS62743YFPT supports dynamic output voltage scaling by changing the logic states of VSEL1–VSEL3 pins while the device is enabled. Table 6-2 in the datasheet confirms all eight voltage options (1.2 V–3.3 V) are accessible in real time, enabling adaptive power management for processors or radios with variable voltage requirements.
Does TPS62743YFPT require external compensation components?
No, the TPS62743YFPT uses TI's DCS-Control™ topology with internal compensation, eliminating the need for external RC networks. It is optimized for stable operation with a 2.2 µH inductor and 10 µF ceramic output capacitor, as specified in Section 9.2.1 and validated in Figure 9-1 of the datasheet.
What protection features are integrated into TPS62743YFPT?
The TPS62743YFPT integrates cycle-by-cycle overcurrent protection on both high-side (600 mA typ) and low-side MOSFETs, undervoltage lockout (UVLO) with 2.15 V/2.0 V thresholds, thermal shutdown, and automatic output voltage discharge via the VOS pin. These protections are documented in Sections 7.5, 8.3.6, and 8.3.4 of the official datasheet.
TPS62743YFPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 8-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.15V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 300mA
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
TPS62743YFPT FAQ
1.How can I place an order for TPS62743YFPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62743YFPT 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 TPS62743YFPT reliable?
The price and inventory of TPS62743YFPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62743YFPT is usually 5 days.
3.What payment methods are accepted for TPS62743YFPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62743YFPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62743YFPT?
TPS62743YFPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62743YFPT 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 TPS62743YFPT?
For technical support, including TPS62743YFPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62743YFPT requirements.
6.How does Aetrix verify that TPS62743YFPT is sourced from the original manufacturer or authorized distributors?
All TPS62743YFPT 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 TPS62743YFPT meets industry standards.
7.What is the process for return or replacement of TPS62743YFPT?
All TPS62743YFPT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62743YFPT, 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 TPS62743YFPT part is unused and in its original packaging.
Return procedure for TPS62743YFPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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