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Texas Instruments TPS62748YFPR
- Part No.:
- TPS62748YFPR
- Manufacturer:
- Texas Instruments
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
TPS62748YFPR.pdf
- Description:
- IC REG BUCK PROG 300MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:278
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Product details
Overview
TPS62748YFPR from Texas Instruments is a high-efficiency, ultra-low-quiescent-current buck converter with integrated 100-mA load switch, delivering 300 mA output current at 1.2 V or 1.8 V selectable via VSEL pin, operating from 2.15–5.5 V input and sustaining down to 2.0 V once started - optimized for coin-cell-powered wearables and RF subsystems.
For engineers reviewing the TPS62748YFPR datasheet, TPS62748YFPR pinout, TPS62748YFPR application, or TPS62748YFPR equivalent, key selection considerations include its 360-nA quiescent current, DCS-Control™ topology enabling seamless PWM/PSM transition, automatic no-ripple 100% mode below VIN–VOUT < 200 mV, RF-friendly operation, and 1.6 mm × 0.9 mm DSBGA-8 package with validated thermal resistance (RθJA = 103 °C/W).
Technical Context
The TPS62748YFPR implements TI's DCS-Control™ architecture, combining fast AC transient response via direct VOS sensing with stable DC regulation using an internally compensated error amplifier and ultra-low-power reference. It operates at a typical 1.2 MHz switching frequency in PWM mode and transitions seamlessly into PFM-based Power Save Mode below ~10 µA load, maintaining >90% efficiency at that level.
Its functional integration includes dual-mode operation (switching vs. 100% conduction), programmable output voltage selection (1.2 V/1.8 V), output voltage discharge via VOS pin, and a dedicated CTRL-controlled 100-mA load switch with 0.6 Ω typical RDS(ON) and internal softstart - all coordinated through a single control logic block without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.15–5.5 V nominal; sustains down to 2.0 V after startup - enables direct operation from single Li-MnO₂ coin cells (e.g., CR2032). |
| Quiescent Current (IQ) | 360 nA typical - minimizes battery drain in always-on sensor or BLE standby states. |
| Output Current | 300 mA continuous - sufficient to power low-power MCUs, sensors, and RF transceivers simultaneously. |
| Output Voltage Options | 1.2 V or 1.8 V, selected dynamically via VSEL pin - supports flexible core/peripheral voltage scaling without external resistors. |
| Load Switch Rating | 100 mA with 0.6 Ω typical RDS(ON) - isolates sub-systems (e.g., display, radio) while minimizing dropout and enabling controlled power sequencing. |
| Switching Topology | DCS-Control™ - delivers <10 mVPP output ripple at light loads and <50 µs transient recovery, critical for RF coexistence. |
| No-Ripple 100% Mode | Enters when VIN–VOUT < 200 mV (typical); exits at >250 mV - eliminates switching noise during brownout or battery depletion, preserving signal integrity. |
| Total Solution Size | <10 mm² - achieved with 2.2 µH inductor and 10 µF ceramic output capacitor, enabling ultra-compact PCB layouts. |
Pinout & Package
TPS62748YFPR uses an 8-ball DSBGA (YFP) package with 0.4-mm pitch and nominal body size 1.6 mm × 0.9 mm. Thermal performance is characterized by RθJA = 103 °C/W and RθJB = 20 °C/W, supporting reliable operation in sealed wearable enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Primary input supply rail (2.15–5.5 V); requires local 4.7 µF ceramic decoupling for EMI suppression. |
| SW | Switch node | Connects to inductor; carries high di/dt switching current - must be routed short and wide to minimize parasitic inductance. |
| GND | Power ground | Common return for input/output capacitors and IC substrate; requires low-impedance connection to PCB ground plane. |
| VOS | Output feedback & discharge | Regulation sense point and discharge path - connects directly to output capacitor; discharges VOUT when EN = low. |
| VSEL | Output voltage select | Digital input (0 = 1.2 V, 1 = 1.8 V); supports dynamic reconfiguration during operation without reset. |
| EN | Enable control | Active-high enable; pulls device into shutdown (70 nA ISD) when low - used for system-level power gating. |
| CTRL | Load switch control | Active-high gate for integrated 100-mA load switch; includes internal softstart and GND discharge path when low. |
| LOAD | Load switch output | Switched output rail; floats when CTRL = low; pulled to GND via ~30 Ω when CTRL = low - ensures safe sub-system power-down. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 360 nA typical enables >1-year battery life in 10-µA average-load wearables powered by CR2032. |
| DCS-Control™ topology | Enables simultaneous high light-load efficiency (>90% @ 10 µA) and fast transient response (<50 µs) without external compensation. |
| Programmable dual-output voltage | 1.2 V / 1.8 V selection via single VSEL pin eliminates resistor divider, saving board space and BOM cost. |
| Integrated 100-mA load switch | Reduces component count by replacing discrete MOSFET + driver; includes softstart and automatic GND discharge for glitch-free sequencing. |
| No-ripple 100% mode | Eliminates switching noise during near-battery-depletion operation - critical for analog sensor accuracy and RF receiver sensitivity. |
| Small 1.6 mm × 0.9 mm DSBGA | Supports ultra-thin form factors (e.g., smartwatch bands, hearables); compatible with standard 0.4-mm-pitch SMT assembly. |
Applications
| Fitness Tracker Power Management | BLE Sensor Node Supply |
|---|---|
Use Scenario: Powers accelerometer, heart-rate sensor, and BLE SoC from a single CR2032 coin cell in a wrist-worn tracker. IC Role / Device Role / Timing Role: Primary step-down regulator and sub-system power distributor - supplies MCU core (1.8 V), sensor analog rail (1.2 V), and BLE radio (1.8 V) via LOAD switch. Use Value: 360-nA IQ extends battery life beyond 12 months; no-ripple 100% mode prevents RF desense during low-VIN operation. | Use Scenario: Powers a wireless environmental sensor node harvesting energy from ambient light or vibration. IC Role / Device Role / Timing Role: Ultra-low-power DC/DC converter and sequenced load switch - regulates harvested micro-power into stable 1.2 V for MCU sleep and 1.8 V for periodic BLE transmission bursts. Use Value: Maintains >75% efficiency down to 1 µA load, enabling usable runtime even with intermittent energy harvesting. |
| Smartwatch Display Subsystem | Medical Patch Signal Chain |
Use Scenario: Supplies OLED display driver and touch controller in a compact smartwatch with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency buck converter with integrated load switch - delivers 1.8 V to display IC and gates its power via CTRL pin during screen-off periods. Use Value: 0.6 Ω RDS(ON) limits dropout to <180 mV at 100 mA; small DSBGA footprint fits within narrow bezel area. | Use Scenario: Powers ECG front-end, ADC, and low-power MCU in a disposable medical patch worn for 72+ hours. IC Role / Device Role / Timing Role: Precision-regulated power source with output discharge - ensures clean power-up/down sequencing and zero residual voltage on analog rails. Use Value: VOS-pin discharge guarantees repeatable start-up behavior; ±2% VOUT accuracy maintains ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter with load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62746YFPR | Same package and pinout; 400 mA output current; fixed 1.8 V output (no VSEL); 400 nA IQ. | Higher output current but lacks voltage flexibility - suitable only where 1.8 V is mandatory and >300 mA peak is required. | Select TPS62746YFPR if higher current is needed and dual-voltage operation is unnecessary. |
| TPS62840DLCR | 200 nA IQ; 1.8 V fixed; 600 mA output; 1.5 mm × 1.5 mm DSBGA; no integrated load switch. | Lower IQ but requires external load switch; larger package; no VSEL or discharge function. | Select TPS62840DLCR only when absolute minimum IQ is critical and external switch integration is acceptable. |
Compared with TPS62746YFPR and TPS62840DLCR, the TPS62748YFPR uniquely balances ultra-low IQ, dual-output voltage programmability, integrated load switch with discharge, and minimal footprint - making it optimal for space-constrained, multi-rail wearable systems requiring long battery life and robust power sequencing.
Availability
TPS62748YFPR is available at Aetrix Electronics and suitable for wearable electronics, BLE sensor nodes, and medical patches requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62748YFPR 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 over 90 years of innovation in high-reliability, energy-efficient IC design.
The TPS627xx family was designed specifically for ultra-low-power, battery-operated portable devices - emphasizing nanoscale quiescent current, miniature packaging, and intelligent power delivery features like auto 100% mode and integrated load switching.
FAQ
What is the minimum input voltage at which TPS62748YFPR can operate continuously?
The TPS62748YFPR operates continuously down to 2.0 V once started, though its recommended input range is 2.15–5.5 V. This 2.0 V capability allows uninterrupted operation as a Li-MnO₂ coin cell discharges from 3.0 V to endpoint, extending usable battery life in wearables without brownout resets. The UVLO threshold is 2.15 V (rising) and 2.0 V (falling), ensuring stable startup and graceful shutdown.
How does the TPS62748YFPR achieve 360-nA quiescent current?
The TPS62748YFPR achieves 360-nA quiescent current through an ultra-low-power voltage reference, high-impedance internal feedback divider network, and optimized Power Save Mode that shuts down non-essential circuitry during PFM sleep periods. This architecture is validated across –40°C to 85°C and is measured with EN = VIN, CTRL = GND, IOUT = 0 µA, and VOUT = 1.8 V under no-switching conditions - matching TI's SLVSD37B datasheet specification.
Can the output voltage of TPS62748YFPR be changed dynamically during operation?
Yes, the TPS62748YFPR supports dynamic output voltage scaling: the VSEL pin can be toggled between logic low (1.2 V) and high (1.8 V) while the device is enabled and regulating, with no need for reset or power cycle. This feature enables adaptive power management - for example, lowering MCU core voltage during sleep and raising it for active computation - and is explicitly confirmed in Section 8.3.4 of the TPS62748 datasheet.
What is the purpose of the VOS pin on the TPS62748YFPR?
The VOS pin on the TPS62748YFPR serves three critical functions: (1) it is the feedback node for the internal regulation loop, (2) it provides the discharge path for the output capacitor when EN is pulled low, and (3) it connects to the internal load switch source. Connecting VOS directly to the output capacitor with a short trace ensures accurate regulation and fast discharge - a key requirement for precise power sequencing in medical and sensor applications.
Does the TPS62748YFPR include short-circuit protection?
Yes, the TPS62748YFPR integrates cycle-by-cycle current limiting on both high-side and low-side MOSFETs to protect against overload and short-circuit conditions. When the high-side current limit (~600 mA typical) is reached, the high-side switch turns off and the low-side switch turns on until its current limit (~650 mA) is reached, then the sequence repeats. This dual-limit architecture prevents thermal runaway and ensures robust operation in fault-prone wearable environments.
TPS62748YFPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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, 1.8V
- Voltage - Output (Max):
- -
- 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
TPS62748YFPR FAQ
1.How can I place an order for TPS62748YFPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62748YFPR 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 TPS62748YFPR reliable?
The price and inventory of TPS62748YFPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62748YFPR is usually 5 days.
3.What payment methods are accepted for TPS62748YFPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62748YFPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62748YFPR?
TPS62748YFPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62748YFPR 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 TPS62748YFPR?
For technical support, including TPS62748YFPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62748YFPR requirements.
6.How does Aetrix verify that TPS62748YFPR is sourced from the original manufacturer or authorized distributors?
All TPS62748YFPR 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 TPS62748YFPR meets industry standards.
7.What is the process for return or replacement of TPS62748YFPR?
All TPS62748YFPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62748YFPR, 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 TPS62748YFPR part is unused and in its original packaging.
Return procedure for TPS62748YFPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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