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Texas Instruments TPS62050DGSR
- Part No.:
- TPS62050DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62050DGSR.pdf
- Description:
- IC REG BUCK ADJ 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,751
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Product details
Overview
TPS62050DGSR 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 or multi-cell alkaline/NiMH-powered portable electronics requiring compact, high-efficiency power conversion.
For engineers reviewing the TPS62050DGSR datasheet, TPS62050DGSR pinout, TPS62050DGSR application, or TPS62050DGSR equivalent, key selection considerations include its adjustable feedback architecture, 850 kHz fixed-frequency PWM operation (synchronizable to 600–1200 kHz), power-save mode for light-load efficiency, integrated P/N-MOSFET switches, and low-battery detection support via LBI/LBO pins.
Technical Context
The TPS62050DGSR implements voltage-mode control with input-voltage feedforward for fast line/load transient response. Its internal 850 kHz oscillator drives synchronous rectification using integrated N- and P-channel MOSFETs, enabling high efficiency without external diodes. The device transitions between forced-PWM and pulse-frequency modulation (PFM) modes based on SYNC pin state and load current.
Functional modes are determined by pin configuration: SYNC = HIGH forces fixed-frequency PWM with low-noise operation; SYNC = LOW enables power-save mode with PFM at light loads; EN controls enable/shutdown (<2 µA shutdown current); FB accepts external resistor divider for output voltage setting; LBI/LBO provide programmable low-battery monitoring with 1.21 V trip point.
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 NiMH/alkaline battery systems without external regulators. |
| Output Voltage Range | Adjustable 0.7 V to 6 V - set via external resistor divider on FB pin; enables flexible core/peripheral rail generation. |
| Max Output Current | 800 mA - sustained delivery under thermal limits; supports DSP, baseband processors, and sensor subsystems. |
| Quiescent Current | 12 µA typical - enables >100-hour standby in battery-powered devices with minimal self-discharge impact. |
| Switching Frequency | 850 kHz typical, synchronizable 600–1200 kHz - allows use of small 10 µH inductors and 22 µF ceramic output capacitors. |
| Efficiency | Up to 95% - achieved via synchronous rectification and optimized gate drive, reducing heat and extending battery life. |
| Feedback Reference | 0.5 V - low reference voltage improves accuracy and noise immunity for low-VOUT applications. |
Pinout & Package
TPS62050DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained portable designs. Thermal resistance is RθJA = 154 °C/W, supporting operation from –40°C to +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7–10 V supply; connects to input capacitor (10 µF typical) and battery or DC source. |
| EN | Enable control | Logic-high enables regulation; logic-low reduces supply current to <2 µA - supports system-level power sequencing. |
| FB | Feedback input | Connects to resistor divider for adjustable output; internal 0.5 V reference sets VOUT = 0.5 × (1 + R1/R2). |
| PG | Power-good indicator | Open-drain output floats when VOUT ≥ 95% nominal; requires external pullup for host microcontroller monitoring. |
| LBI / LBO | Low-battery monitor I/O | LBI senses divided battery voltage; LBO asserts open-drain low when LBI < 1.21 V ±1.5% - enables graceful shutdown before brownout. |
| SW | Switch node | Drives external inductor (10 µH typical); connects internally to P/N-MOSFET drains - critical for EMI layout. |
| SYNC | Mode control | High = forced PWM (low-noise); Low = PFM/PWM auto-switching (high light-load efficiency); floating = internal 850 kHz. |
| GND / PGND | Analog & power ground | Separate GND (signal reference) and PGND (high-current return) minimize noise coupling into feedback path. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-MOSFET switches | Eliminates external diode and reduces BOM count; RDS(ON) ≤ 650 mΩ (P-ch) and ≤ 450 mΩ (N-ch) minimizes conduction loss. |
| 100% duty cycle capability | Enables ultra-low dropout operation - maintains regulation even when VIN ≈ VOUT, critical for end-of-battery-life scenarios. |
| Internal soft-start | Digital ramp limits inrush current during startup; typical 1 ms rise time with 22 µF output cap prevents input rail collapse. |
| Overtemperature & overcurrent protection | Thermal shutdown at 145°C and cycle-by-cycle current limiting (1.2 A typical) ensure robustness under fault conditions. |
| Low-noise forced-PWM mode | SYNC = HIGH disables PFM, fixing frequency at 850 kHz - simplifies EMI filtering for RF/analog-sensitive circuits. |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator generating 1.8 V core and 2.8 V I/O rails with dynamic voltage scaling support. Use Value: 95% peak efficiency and 12 µA quiescent current extend talk time and standby duration without thermal derating. | Use Scenario: Supplying image sensor, ISP, and LCD backlight driver in compact handheld camera. IC Role / Device Role / Timing Role: Adjustable-output converter delivering 1.2 V (sensor), 2.5 V (ISP), and 3.3 V (interface) from shared battery rail. Use Value: Single IC replaces multiple LDOs; 850 kHz switching enables miniature 10 µH inductor and avoids audible noise in video capture. |
| Handheld PCs / PDAs | Low-Power DSP Supplies |
Use Scenario: Providing regulated power to ARM-based application processor and memory subsystem in clamshell PDA. IC Role / Device Role / Timing Role: Main system PMIC buck stage with LBO-triggered OS suspend before battery depletion. Use Value: Programmable LBI threshold (1.21 V) and open-drain LBO enable precise battery fuel gauging and controlled hibernation. | Use Scenario: Generating clean 1.5 V core voltage for TI C5000-series DSP in portable audio recorder. IC Role / Device Role / Timing Role: High-PSRR, low-noise buck converter operating in forced-PWM mode to avoid switching interference with analog audio paths. Use Value: SYNC = HIGH ensures fixed 850 kHz frequency - simplifies LC filter design and meets <10 µVpp ripple requirement. |
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 |
|---|---|---|---|
| TPS62051DGSR | Enhanced LBI comparator with 5 µA quiescent current in supervisor-only mode; identical pinout and electrical specs otherwise. | Required when undervoltage lockout must initiate before full enable - e.g., battery cutoff prior to system boot. | Select TPS62051DGSR only if precise pre-enable battery supervision is needed; otherwise TPS62050DGSR offers standard LBI functionality at same cost. |
| TPS62060DSGR | Higher 1.2 MHz switching frequency, 1.2 A output, smaller 6-pin WSON package; different pinout and no LBI/LBO. | Suitable for space-critical designs needing higher current but no battery monitoring - e.g., wearables with tight PCB area budget. | Choose TPS62060DSGR for miniaturized, higher-current apps without low-battery signaling; TPS62050DGSR remains optimal when LBO-driven shutdown is required. |
Compared with TPS62051DGSR, the TPS62050DGSR lacks enhanced LBI supervisor mode but matches all core power specs and pin compatibility; versus TPS62060DSGR, it trades higher current and smaller footprint for integrated battery monitoring and proven 850 kHz stability in legacy portable designs.
Availability
TPS62050DGSR is available at Aetrix Electronics and suitable for cellular phones, digital cameras, handheld PCs, and low-power DSP supplies requiring stable component supply across long-lifecycle portable product programs.
Supply support for TPS62050DGSR 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 family was engineered specifically for battery-powered portable electronics - delivering high efficiency across wide load ranges while integrating critical system functions like power good, low-battery detection, and synchronization in a miniature MSOP package.
FAQ
What is the maximum output current capability of the TPS62050DGSR?
The TPS62050DGSR supports a continuous output current of up to 800 mA under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). This rating assumes no thermal limitation and accounts for internal MOSFET RDS(ON), inductor DCR, and ambient cooling. Peak switch current limit is 1.2 A, enabling robust start-up into capacitive loads. Derating is required above 85°C ambient or with inadequate copper area.
How does the TPS62050DGSR achieve high efficiency at light loads?
The TPS62050DGSR enters power-save mode (PFM) when load current drops below ~100–200 mA, reducing switching frequency and quiescent current to 12 µA typical. This adaptive behavior maintains >85% efficiency down to 1 mA load, unlike fixed-frequency converters that suffer steep efficiency roll-off. The transition is controlled by internal comparators monitoring average output current over 32 clock cycles.
Can the TPS62050DGSR be synchronized to an external clock, and what is the supported range?
Yes, the TPS62050DGSR supports external synchronization via the SYNC pin across 600 kHz to 1200 kHz. When an external clock is applied, the device locks to its rising edge and operates in forced-PWM mode, disabling power-save. If the external clock stops, it automatically reverts to the internal 850 kHz oscillator within ≤8.3 µs. SYNC = HIGH (≥1.5 V) enables synchronization; SYNC = LOW enables PFM.
What is the function of the LBI and LBO pins on the TPS62050DGSR?
The LBI (Low-Battery Input) pin accepts a scaled battery voltage via external resistor divider; the internal comparator triggers at 1.21 V ±1.5%. When LBI falls below this threshold, the open-drain LBO (Low-Battery Output) pulls low to signal host controller. LBO is invalid for first 500 µs after enable and is high-impedance during shutdown. Unused LBI should be grounded; unused LBO may be left floating.
Does the TPS62050DGSR require external components for basic operation, and what are the minimum requirements?
Yes, the TPS62050DGSR requires four external components for basic operation: input capacitor (10 µF ceramic), output capacitor (22 µF ceramic), power inductor (10 µH), and FB voltage-divider resistors (for adjustable output). The internal soft-start, compensation, and MOSFETs eliminate need for additional ICs. Layout guidelines emphasize separate GND/PGND planes and short SW trace routing to minimize EMI.
TPS62050DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TPS62050DGSR FAQ
1.How can I place an order for TPS62050DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62050DGSR 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 TPS62050DGSR reliable?
The price and inventory of TPS62050DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62050DGSR is usually 5 days.
3.What payment methods are accepted for TPS62050DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62050DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62050DGSR?
TPS62050DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62050DGSR 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 TPS62050DGSR?
For technical support, including TPS62050DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62050DGSR requirements.
6.How does Aetrix verify that TPS62050DGSR is sourced from the original manufacturer or authorized distributors?
All TPS62050DGSR 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 TPS62050DGSR meets industry standards.
7.What is the process for return or replacement of TPS62050DGSR?
All TPS62050DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62050DGSR, 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 TPS62050DGSR part is unused and in its original packaging.
Return procedure for TPS62050DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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