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Texas Instruments TPS62050DGS
- Part No.:
- TPS62050DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62050DGS.pdf
- Description:
- IC REG BUCK ADJ 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:681
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Product details
Overview
TPS62050DGS from Texas Instruments is an adjustable-output, 800-mA synchronous step-down DC-DC converter in a 10-pin VSSOP (DGS) package. It operates from 2.7 V to 10 V input, delivers 0.7 V to 6 V output, achieves up to 95% efficiency, and features 12 µA typical quiescent current - designed for Li-ion–powered portable systems requiring high light-load efficiency and compact power delivery.
For engineers reviewing the TPS62050DGS datasheet, TPS62050DGS pinout, TPS62050DGS application, or TPS62050DGS equivalent, key selection criteria include its adjustable feedback architecture, 850 kHz fixed-frequency PWM with PFM power-save mode, integrated N/P-channel MOSFETs, low-battery detection interface (LBI/LBO), and open-drain power-good output (PG) with 95% trip threshold.
Technical Context
The TPS62050DGS implements voltage-mode control with input-voltage feedforward for fast line/load transient response and stable regulation using small ceramic capacitors. Its dual-MOSFET synchronous rectification eliminates external diode losses and enables 100% duty cycle operation for ultra-low dropout.
It supports three functional modes via the SYNC pin: forced PWM (SYNC = HIGH, fixed 850 kHz, low-noise), auto PFM/PWM (SYNC = LOW, 12 µA IQ, high light-load efficiency), and external synchronization (600–1200 kHz). The EN pin provides <2 µA shutdown current, and internal soft-start limits inrush with stepped current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 10 V - supports single/dual Li-ion, 3–5-cell alkaline/NiMH battery inputs without pre-regulation. |
| Output Voltage Range | 0.7 V to 6 V (adjustable via external resistor divider) - enables precise core voltage scaling for DSPs, FPGAs, and microcontrollers. |
| Max Output Current | 800 mA - sufficient for powering low-power processors, RF modules, and sensor subsystems in space-constrained designs. |
| Quiescent Current | 12 µA typical (PFM mode) - extends battery runtime in always-on or sleep-state applications like handheld PCs and digital cameras. |
| Switching Frequency | 850 kHz typical (internal oscillator); 600–1200 kHz (externally synchronized) - allows use of ≤10 µH inductors and compact 10–22 µF ceramic output capacitors. |
| Efficiency Peak | Up to 95% - achieved at mid-load with optimized MOSFET RDS(ON) and synchronous rectification, reducing thermal load on PCB. |
| Feedback Reference | 0.5 V ±3% - enables accurate output regulation across temperature and load; sets minimum output at 0.7 V with standard resistor ratios. |
Pinout & Package
TPS62050DGS is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with 0.5-mm lead pitch, optimized for high-density portable PCB layouts and compatible with standard MSOP reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Primary DC input supply (2.7–10 V); connects to bulk input capacitor and must be decoupled locally. |
| LBO (Pin 2) | Open-Drain Output | Low-battery alert signal; sinks current when LBI voltage falls below 1.21 V - requires external pullup to VOUT or another rail ≤6 V. |
| GND (Pin 3) | Analog Ground | Reference node for feedback, enable, and comparator circuits; must be connected to clean analog ground plane. |
| PG (Pin 4) | Open-Drain Output | Power-good indicator; floats high when VOUT ≥95% of nominal - requires external pullup for system power sequencing. |
| FB (Pin 5) | Feedback Input | Adjustable output voltage sense node; connects to resistor divider from VOUT; internal 0.5 V reference enables 0.7–6 V programming. |
| LBI (Pin 6) | Low-Battery Input | Monitors battery voltage via external resistive divider; triggers LBO when input falls below 1.21 V ±1.5%. |
| SYNC (Pin 7) | Mode Control Input | Selects operating mode: GND = PFM/PWM auto-switching; VI or >1.5 V = forced PWM; external clock = synchronization (600–1200 kHz). |
| EN (Pin 8) | Enable Input | Active-high logic control; <2 µA shutdown current when pulled low - supports pushbutton or processor-controlled power gating. |
| SW (Pin 9) | Switch Node | Internal N/P-MOSFET connection point; drives external inductor; requires tight layout and Kelvin connection to minimize ringing. |
| PGND (Pin 10) | Power Ground | High-current return path for switch node and inductor; must be routed separately from AGND and joined at single point near VIN capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated N- and P-channel MOSFETs eliminate external Schottky loss, enabling >90% efficiency at 10 mA load. |
| Power-Save Mode (PFM) | Reduces quiescent current to 12 µA and dynamically lowers switching frequency under light loads - critical for standby battery life. |
| 100% Duty Cycle Operation | Supports ultra-low dropout (e.g., 3.3 V out from 3.6 V in), preserving regulation during battery voltage sag. |
| Programmable Synchronization | Accepts external clock (600–1200 kHz) or logic-level SYNC control to avoid EMI interference in noise-sensitive RF or audio circuits. |
| Integrated Protection | Includes overcurrent limiting (1.0–1.4 A), thermal shutdown (~145°C), undervoltage lockout (1.6 V), and soft-start - reduces external component count. |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor core and memory I/O rails from a single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Adjustable synchronous buck regulator delivering 1.2 V/600 mA with dynamic voltage scaling support. Use Value: 95% peak efficiency and 12 µA quiescent current extend talk time and standby duration while minimizing thermal dissipation in sealed enclosures. | Use Scenario: Supplying image sensor analog front-end and ISP core voltage from a 2-cell NiMH pack (2.4–3.0 V). IC Role / Device Role / Timing Role: Low-noise, fixed-frequency PWM buck converter generating 2.5 V/500 mA with SYNC pin tied to system clock for EMI alignment. Use Value: Forced PWM mode eliminates subharmonic noise in analog imaging paths, and 850 kHz switching enables use of miniature 4.7 µH inductors. |
| Handheld PCs / PDAs | Low-Power DSP Supplies |
Use Scenario: Providing multiple regulated rails (1.8 V, 3.3 V) via cascaded or independent TPS62050DGS converters in a compact clamshell design. IC Role / Device Role / Timing Role: Primary system power management IC with LBO monitoring battery health and PG coordinating sequenced startup of peripherals. Use Value: Integrated LBI/LBO and PG outputs eliminate need for discrete supervisors, reducing BOM count and board area by >30% vs discrete solutions. | Use Scenario: Delivering clean, tightly regulated 1.5 V core supply to a TI C5000-series DSP operating in active and idle states. IC Role / Device Role / Timing Role: High-efficiency synchronous buck converter with automatic PFM-to-PWM transition matching DSP dynamic load profile. Use Value: Maintains >85% efficiency from 1 mA to 800 mA load, eliminating thermal derating and enabling fanless operation in industrial handheld analyzers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62052DGS | Fixed 1.5 V output; no FB pin; identical package, pinout, and efficiency curve. | Eliminates external feedback resistors but lacks output adjustability - suitable only where 1.5 V is required. | Select TPS62052DGS when fixed 1.5 V simplifies design and reduces component count; not interchangeable with TPS62050DGS due to missing FB functionality. |
| TPS62060DSGR | 3-MHz switching frequency; 1.2 V to 6 V adjustable output; 2.05 V to 6 V input; 600 mA max output. | Higher frequency enables smaller magnetics but lower current rating and narrower input range than TPS62050DGS. | Choose TPS62060DSGR for ultra-compact designs needing <1 µH inductors; avoid if >600 mA or <2.7 V input is required. |
Compared with TPS62052DGS and TPS62060DSGR, the TPS62050DGS uniquely balances wide input/output flexibility (0.7–6 V), 800 mA capability, and proven 850 kHz operation - making it optimal for multi-rail, battery-powered systems where adjustability and headroom are essential.
Availability
TPS62050DGS is available at Aetrix Electronics and suitable for cellular phones, handheld PCs, digital cameras, and low-power DSP supplies requiring stable component supply, long-term manufacturability, and full production traceability.
Supply support for TPS62050DGS 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 high-efficiency DC-DC conversion.
The TPS6205x product line was engineered specifically for portable battery-powered applications - emphasizing ultra-low quiescent current, small solution size, and seamless integration of battery monitoring and power sequencing functions.
FAQ
What is the maximum output current capability of the TPS62050DGS?
The TPS62050DGS delivers up to 800 mA of continuous output current under recommended operating conditions (TA ≤ 85°C, adequate PCB copper area). This rating assumes no thermal limitation and accounts for internal MOSFET RDS(ON), inductor DCR, and ambient temperature. Peak current limit is 1.0–1.4 A, but sustained operation above 800 mA requires careful thermal design per the 154°C/W junction-to-ambient thermal resistance.
How does the TPS62050DGS achieve high efficiency at light loads?
The TPS62050DGS achieves high light-load efficiency by automatically entering pulse-frequency modulation (PFM) mode when output current drops below ~100–200 mA. In this mode, it reduces switching frequency and quiescent current to 12 µA typical, maintaining >85% efficiency down to 1 mA. This behavior is controlled internally and activated when the SYNC pin is pulled low (GND).
Can the TPS62050DGS be synchronized to an external clock, and what is the supported frequency range?
Yes, the TPS62050DGS supports external synchronization via the SYNC pin across a 600 kHz to 1200 kHz range. When an external clock is applied, the device locks to its rising edge and operates in forced PWM mode, disabling PFM. If the external clock stops, the device automatically reverts to its internal 850 kHz oscillator within ≤8.3 µs - ensuring uninterrupted operation during clock source transitions.
What is the function of the LBI and LBO pins on the TPS62050DGS?
The LBI (low-battery input) pin accepts a scaled-down battery voltage via an external resistor divider; when that voltage falls below 1.21 V ±1.5%, the open-drain LBO (low-battery output) pin pulls low to signal battery depletion. LBO requires an external pullup (to VOUT or ≤6 V rail) and is invalid for the first 500 µs after enable. If unused, LBI must be grounded and LBO left floating or tied to GND.
Does the TPS62050DGS include built-in protection features, and which ones are implemented?
Yes, the TPS62050DGS integrates overcurrent protection (1.0–1.4 A peak limit), thermal shutdown (~145°C), undervoltage lockout (1.6 V), and soft-start circuitry. It also features internal current-limit comparators for both P- and N-channel MOSFETs, shoot-through prevention logic, and power-good monitoring with 250 µs delay and 95% trip threshold - all without requiring external components.
TPS62050DGS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 800mA
- Frequency - Switching:
- 850kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS62050DGS FAQ
1.How can I place an order for TPS62050DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62050DGS 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 TPS62050DGS reliable?
The price and inventory of TPS62050DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62050DGS is usually 5 days.
3.What payment methods are accepted for TPS62050DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62050DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62050DGS?
TPS62050DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62050DGS 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 TPS62050DGS?
For technical support, including TPS62050DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62050DGS requirements.
6.How does Aetrix verify that TPS62050DGS is sourced from the original manufacturer or authorized distributors?
All TPS62050DGS 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 TPS62050DGS meets industry standards.
7.What is the process for return or replacement of TPS62050DGS?
All TPS62050DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS62050DGS, 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 TPS62050DGS part is unused and in its original packaging.
Return procedure for TPS62050DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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