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Texas Instruments TPS62052DGSR
- Part No.:
- TPS62052DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62052DGSR.pdf
- Description:
- IC REG BUCK 1.5V 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,554
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Product details
Overview
TPS62052DGSR from Texas Instruments is a fixed-output 1.5 V, 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 up to 95% efficiency at full load, features 12 µA quiescent current in power-save mode, and supports external synchronization up to 1.2 MHz - ideal for Li-ion–powered portable electronics requiring stable low-voltage rails.
For engineers reviewing the TPS62052DGSR datasheet, TPS62052DGSR pinout, TPS62052DGSR application, or TPS62052DGSR equivalent, key selection considerations include its fixed 1.5 V output, integrated P/N-MOSFETs, open-drain PG/LBO outputs, SYNC-controlled PWM/PFM mode switching, and thermal shutdown protection across –40°C to 85°C operation.
Technical Context
The TPS62052DGSR uses voltage-mode PWM control with input voltage feed-forward for fast line/load transient response. Its internal 850 kHz oscillator enables small external LC components (e.g., 10 µH inductor, 22 µF output capacitor), and it transitions seamlessly between fixed-frequency PWM (SYNC = HIGH) and pulse-frequency modulation (SYNC = LOW) to maintain high efficiency from 10 mA to 800 mA load range.
Functional blocks include a 0.5 V reference amplifier, dual MOSFET drivers with shoot-through protection, soft-start circuitry limiting inrush current via stepped current limits (200/400/800 mA), and independent comparators for power-good (95% VO threshold), low-battery detection (1.21 V LBI trip), and undervoltage lockout (1.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% - eliminates external feedback resistors; optimized for low-voltage logic and core supplies. |
| Max Output Current | 800 mA - sufficient for DSP cores, FPGA I/O banks, or multi-core microcontrollers without thermal derating under typical PCB layout. |
| Input Voltage Range | 2.7 V to 10 V - supports single/dual Li-ion, 3–5-cell alkaline/NiMH, and industrial 3.3 V/5 V/9 V rails. |
| Quiescent Current | 12 µA (typ) in power-save mode - extends battery life in standby states of handheld devices. |
| Switching Frequency | 850 kHz (internal) or 600–1200 kHz (externally synchronized) - enables compact 2.2 × 2.2 mm inductors and reduces EMI filtering burden. |
| Efficiency Peak | 95% at VO = 1.5 V, IO = 800 mA, VI = 3.6 V - minimizes thermal rise in space-constrained portable enclosures. |
| Thermal Resistance | RθJA = 154 °C/W - requires ≥2 cm² copper pour on PGND layer for full 800 mA operation at 85°C ambient. |
Pinout & Package
TPS62052DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with 0.5 mm pitch. Thermal pad on underside connects to PGND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply rail | Accepts 2.7–10 V; requires local 10 µF ceramic decoupling close to pin for stability. |
| LBO (Pin 2) | Open-drain low-battery output | Sinks current when LBI < 1.21 V; requires external pullup to VO or ≤6 V rail for valid logic-low assertion. |
| GND (Pin 3) | Analog ground reference | Connects to clean analog ground plane; separate from PGND except at single-point star node. |
| PG (Pin 4) | Open-drain power-good indicator | Floats high when VO > 95% of 1.5 V; must be pulled up to VO with ≥10 kΩ resistor for system monitoring. |
| FB (Pin 5) | Feedback reference input | Internally tied to 1.5 V divider; unused in fixed-output variant - leave unconnected or tie to GND per datasheet guidance. |
| LBI (Pin 6) | Low-battery comparator input | Monitors battery voltage via external resistor divider; accuracy ±1.5% - sets cutoff before deep discharge damage. |
| SYNC (Pin 7) | Mode control & sync input | Pull to GND for PFM/PWM auto-switching; pull >1.5 V for forced fixed-frequency PWM; accept 600–1200 kHz clock for EMI reduction. |
| EN (Pin 8) | Enable control | Logic-high (>1.3 V) enables regulation; logic-low (<0.3 V) shuts down IC, reducing IQ to <2 µA. |
| SW (Pin 9) | Switch node | Drives external 10 µH inductor; high dv/dt node - minimize trace length and avoid routing near sensitive analog signals. |
| PGND (Pin 10) | Power ground return | Carries high pulsed inductor current; connect directly to inductor ground pad and thermal pad for lowest impedance path. |
Key Features
| Feature | Design Value |
|---|---|
| 100% duty cycle capability | Enables dropout as low as 150 mV at 800 mA - sustains regulation during brownout conditions common in battery-powered systems. |
| Internal soft-start | Staged 200/400/800 mA current ramp limits inrush into 22 µF output capacitor - prevents input rail collapse on cold start. |
| Overtemperature protection | Shuts down at 145°C junction temperature and auto-restarts upon cooling - prevents permanent damage during sustained overload or poor heatsinking. |
| Low-noise forced-PWM mode | Eliminates frequency variation and associated EMI spread spectrum - critical for RF sections, audio codecs, and precision ADC references. |
| Integrated P/N-channel MOSFETs | Reduces BOM count by two discrete switches and associated gate drive components - simplifies layout and improves reliability. |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage in GSM/UMTS handsets operating from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 1.5 V step-down regulator delivering regulated core supply with fast load transient response to CPU burst activity. Use Value: 95% peak efficiency and 12 µA quiescent current extend talk time by >12% versus older linear regulators; SYNC pin enables noise-free operation during camera flash charging. | Use Scenario: Supplying image sensor interface and ISP core logic in compact digital still cameras with dual-cell alkaline batteries (3.0–7.2 V). IC Role / Device Role / Timing Role: Fixed 1.5 V rail generator supporting high-speed parallel data transfer between sensor and processor. Use Value: 850 kHz switching frequency allows use of miniature 10 µH shielded inductors; PG signal validates rail stability before initiating frame capture sequence. |
| Handheld PCs | Low-Power DSP Supplies |
Use Scenario: Providing 1.5 V core voltage to ARM-based application processors in ruggedized handheld terminals used in logistics and field service. IC Role / Device Role / Timing Role: Main system PMIC output stage enabling dynamic voltage scaling based on workload. Use Value: LBI comparator monitors battery health and triggers graceful OS shutdown at 1.21 V - prevents data corruption during unexpected power loss. | Use Scenario: Generating clean 1.5 V supply for TI C5000-series DSPs in portable medical ultrasound probes powered by rechargeable NiMH packs. IC Role / Device Role / Timing Role: Low-noise, high-efficiency DC-DC converter feeding DSP core with minimal ripple-induced jitter. Use Value: Forced-PWM mode (SYNC = HIGH) suppresses switching noise in analog front-end circuits - preserves SNR in echo signal processing. |
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 | Adjustable output (0.7–6 V); enhanced LBI comparator with 5 µA quiescent current in supervisor-only mode. | Used where programmable output or precise battery cutoff is required - not drop-in compatible due to different FB network and LBI behavior. | Select TPS62051DGSR only if adjustable voltage or enhanced battery supervision is needed; otherwise TPS62052DGSR offers simpler design and lower cost for fixed 1.5 V. |
| TPS62062DSGR | Same 1.5 V output but higher 1.2 A rating; 2.5–6 V input range; 2.25 MHz switching; 10-pin WSON package. | Better suited for ultra-compact designs needing higher current or faster transient response - incompatible pinout and smaller thermal pad area. | Choose TPS62062DSGR when board space is constrained and >800 mA load margin is required; TPS62052DGSR remains optimal for cost-sensitive, thermally tolerant 800 mA applications. |
Compared with TPS62051DGSR and TPS62062DSGR, the TPS62052DGSR provides the most cost-effective, thermally robust solution for fixed 1.5 V, 800 mA loads within 2.7–10 V input range - balancing efficiency, integration, and manufacturability without over-specifying current or frequency capability.
Availability
TPS62052DGSR is available at Aetrix Electronics and suitable for cellular phones, digital cameras, handheld PCs, and low-power DSP supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62052DGSR 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 designed specifically for battery-powered portable electronics demanding high light-load efficiency, small solution size, and integrated protection - targeting applications where runtime, thermal management, and bill-of-materials simplicity are critical.
FAQ
What is the maximum continuous output current of the TPS62052DGSR?
The TPS62052DGSR delivers up to 800 mA continuously 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 - exceeding this current risks thermal shutdown activation at junction temperatures above 145°C.
Does the TPS62052DGSR require external feedback resistors for its 1.5 V output?
No, the TPS62052DGSR does not require external feedback resistors. It integrates an internal resistor divider that sets the output to a fixed 1.5 V ±3%. The FB pin is internally connected and should be left unconnected or tied to GND per the datasheet - unlike adjustable variants (e.g., TPS62050DGSR), no external components are needed for voltage programming.
How does the SYNC pin affect efficiency and noise performance in the TPS62052DGSR?
When SYNC is pulled low (GND), the TPS62052DGSR enters power-save mode, reducing switching frequency and quiescent current to ~12 µA - maximizing light-load efficiency. When SYNC is pulled high (>1.5 V), it forces fixed-frequency PWM operation at 850 kHz (or external clock), eliminating frequency modulation noise but lowering light-load efficiency due to constant switching losses.
Can the TPS62052DGSR operate with a 2.5 V input voltage?
No, the TPS62052DGSR cannot operate reliably at 2.5 V input. Its absolute minimum input voltage is 2.7 V per the Recommended Operating Conditions table. At 2.5 V, the device may fail to start or experience undervoltage lockout (UVLO) activation, as the internal UVLO threshold is 1.6 V with hysteresis - insufficient headroom for stable 1.5 V regulation.
What is the purpose of the PG and LBO pins on the TPS62052DGSR?
The PG (power good) pin is an open-drain output that floats high when the output voltage exceeds 95% of 1.5 V, signaling valid regulation to system controllers. The LBO (low battery output) pin is also open-drain and pulls low when the LBI input falls below 1.21 V - both require external pullup resistors and provide independent status monitoring for system-level power management and graceful shutdown sequences in the TPS62052DGSR.
TPS62052DGSR 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- 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
TPS62052DGSR FAQ
1.How can I place an order for TPS62052DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62052DGSR 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 TPS62052DGSR reliable?
The price and inventory of TPS62052DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62052DGSR is usually 5 days.
3.What payment methods are accepted for TPS62052DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62052DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62052DGSR?
TPS62052DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62052DGSR 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 TPS62052DGSR?
For technical support, including TPS62052DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62052DGSR requirements.
6.How does Aetrix verify that TPS62052DGSR is sourced from the original manufacturer or authorized distributors?
All TPS62052DGSR 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 TPS62052DGSR meets industry standards.
7.What is the process for return or replacement of TPS62052DGSR?
All TPS62052DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62052DGSR, 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 TPS62052DGSR part is unused and in its original packaging.
Return procedure for TPS62052DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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