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Texas Instruments TPS62054DGSR
- Part No.:
- TPS62054DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62054DGSR.pdf
- Description:
- IC REG BUCK 1.8V 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,150
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Product details
Overview
TPS62054DGSR from Texas Instruments is a fixed-output 1.8 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% peak efficiency, features 12 µA typical quiescent current in power-save mode, and supports external clock synchronization up to 1.2 MHz - ideal for Li-ion–powered portable instrumentation requiring stable low-noise rail generation.
For engineers reviewing the TPS62054DGSR datasheet, TPS62054DGSR pinout, TPS62054DGSR application, or TPS62054DGSR equivalent, key selection considerations include its fixed 1.8 V output with ±3% tolerance, 850 kHz nominal switching frequency, 100% duty cycle capability for low-dropout operation, integrated P/N-channel MOSFETs, and open-drain LBO/PG outputs with defined trip thresholds and hysteresis.
Technical Context
The TPS62054DGSR implements voltage-mode PWM control with input-voltage feedforward for fast line/load transient response. Its synchronous rectification architecture eliminates external diode losses and enables high efficiency across 10 mA–800 mA load range via automatic transition between fixed-frequency PWM (SYNC = HIGH) and pulse-frequency modulation (PFM) power-save mode (SYNC = LOW).
Functional blocks include an internal 0.5 V reference, soft-start circuit limiting inrush current in discrete 200/400/800 mA steps, undervoltage lockout (1.6 V threshold), thermal shutdown (145 °C), and dedicated comparators for power-good (95% VO trip) and low-battery detection (1.21 V LBI threshold with 15 mV hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% - ensures stable core logic supply for low-voltage microcontrollers and FPGAs without external feedback resistors. |
| Max Output Current | 800 mA - supports moderate-power digital loads such as DSPs, baseband processors, and sensor interfaces. |
| Input Voltage Range | 2.7 V to 10 V - compatible with single/dual Li-ion, 3–5-cell alkaline/NiMH, and industrial 3.3 V/5 V/9 V rails. |
| Quiescent Current | 12 µA typical in PFM mode - extends battery life in always-on monitoring circuits and sleep-state peripherals. |
| Switching Frequency | 850 kHz nominal (600–1200 kHz syncable) - enables use of compact 10 µH inductors and 10–22 µF ceramic capacitors. |
| Duty Cycle Range | 100% maximum - maintains regulation down to VI = VO + dropout loss, critical for brownout resilience in battery systems. |
| Thermal Resistance | RθJA = 154 °C/W - requires minimal PCB copper area for thermal management in space-constrained handheld designs. |
Pinout & Package
TPS62054DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with exposed thermal pad (PGND-connected). The package supports reflow soldering and is rated for –40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7–10 V supply; connects to input capacitor (10 µF typical) and must be decoupled near package. |
| LBO | Open-drain low-battery output | Asserts logic low when LBI < 1.21 V ±1.5%; requires external pullup to VO or ≤6 V rail for system-level battery monitoring. |
| GND | Analog ground | Reference for FB, EN, SYNC, LBI; must be routed separately from PGND to minimize noise coupling. |
| PG | Open-drain power-good output | Floats high when VO > 95% of 1.8 V; requires external pullup to VO; invalid for first 250 µs after enable. |
| FB | Feedback input | Internally connected to fixed 1.8 V divider; unused on TPS62054DGSR - leave unconnected or tie to GND per TI recommendation. |
| PGND | Power ground | Return path for SW and internal MOSFETs; must be tied to VIN capacitor ground and thermal pad for optimal EMI/thermal performance. |
| SW | Switch node | Drives external 10 µH inductor; high dv/dt node requiring tight layout and minimized trace length to reduce EMI. |
| EN | Enable input | Active-high logic control; <0.3 V disables device (IQ < 2 µA); >1.3 V enables with internal soft-start sequence. |
| SYNC | Sync clock input | Configures operating mode: HIGH → forced PWM (low-noise); LOW → PFM/PWM auto-switching (high-efficiency). |
| LBI | Low-battery input | Monitors scaled battery voltage via external resistor divider; trip point 1.21 V with 15 mV hysteresis; disabled when EN = LOW. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-channel MOSFETs | Eliminates external rectifier diode, reduces BOM count, and improves full-load efficiency by ~8–12% vs. asynchronous buck. |
| 100% Duty Cycle Operation | Enables dropout as low as 120 mV at 800 mA (based on RDS(ON)), supporting operation during deep battery discharge. |
| Programmable Sync Mode | SYNC pin selects between low-noise fixed-PWM (for RF/analog sections) and adaptive PFM/PWM (for battery runtime optimization). |
| Internal Soft-Start | Gradually ramps switch current (200→400→800 mA steps) to limit inrush, preventing input rail collapse on weak sources like coin cells. |
| Thermal & Overcurrent Protection | Auto-recovery shutdown at 145 °C junction temp and cycle-by-cycle current limiting (1.0–1.4 A) prevent damage under overload or short-circuit. |
Applications
| Cellular Baseband Power | DSP Core Supply |
|---|---|
Use Scenario: Powers ARM9/ARM11 baseband processors in 2G/3G feature phones with dynamic load current ranging 5–600 mA. IC Role / Device Role / Timing Role: Primary 1.8 V core regulator delivering clean, low-noise supply synchronized to system clock to avoid interference with RF front-end. Use Value: 95% peak efficiency and 12 µA quiescent current extend talk time by >18% versus legacy linear regulators; 100% duty cycle sustains operation down to 1.9 V battery voltage. | Use Scenario: Supplies TI C5000/C6000-series DSPs in portable audio analyzers and medical signal processors. IC Role / Device Role / Timing Role: Fixed 1.8 V rail generator with fast transient response (<10 µs) to handle burst-mode processing loads without output droop. Use Value: Voltage-mode control with input feedforward achieves <±15 mV load regulation over 10–800 mA, eliminating need for post-regulation LDOs. |
| Handheld PDA Logic Rail | Industrial Sensor Node MCU |
Use Scenario: Generates 1.8 V for NAND flash I/O and application processor I/O banks in ruggedized PDAs used in field service applications. IC Role / Device Role / Timing Role: Main system buck converter with LBO monitoring battery health and PG signaling valid power to host controller. Use Value: Integrated LBI comparator (1.21 V trip) and open-drain LBO/PG outputs reduce external component count by 3–4 discrete parts versus discrete supervisor solutions. | Use Scenario: Powers ultra-low-power Cortex-M0+ MCUs in battery-operated wireless sensor nodes with 10-year target lifetime. IC Role / Device Role / Timing Role: Primary DC-DC regulator operating in PFM mode during 99% sleep time, switching to PWM only during brief active intervals. Use Value: 12 µA quiescent current and automatic PFM entry below 100 mA load enable >10-year operation on two AA alkaline cells (3000 mAh total). |
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 |
|---|---|---|---|
| TPS62052DGSR | Fixed 1.5 V output; identical pinout, package, and feature set except output voltage and internal feedback divider. | Suitable for 1.5 V FPGA I/O banks or low-voltage ASIC cores where 1.8 V is not required. | Select TPS62052DGSR only when system requires precisely 1.5 V - no external components needed, but not interchangeable with TPS62054DGSR due to different output voltage. |
| TPS62056DGSR | Fixed 3.3 V output; same DGS package, thermal specs, and functional pins; internal divider resistance differs (700–1300 kΩ). | Used for powering 3.3 V peripherals (USB PHYs, SDIO, analog front-ends) in multi-rail portable systems. | Choose TPS62056DGSR for 3.3 V rails - shares layout compatibility but requires separate PCB design due to different output voltage and load regulation behavior. |
Compared with TPS62052DGSR and TPS62056DGSR, the TPS62054DGSR provides optimal voltage alignment for 1.8 V logic families (e.g., LPDDR I/O, ARM core domains), offering identical efficiency, thermal, and timing performance while avoiding level-shifting overhead in 1.8 V–centric architectures.
Availability
TPS62054DGSR is available at Aetrix Electronics and suitable for cellular baseband power, DSP core supply, handheld PDA logic rails, and industrial sensor node MCU applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62054DGSR 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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and high-performance power management solutions for industrial, automotive, and consumer markets.
The TPS6205x product line was engineered specifically for high-efficiency, low-quiescent-current DC-DC conversion in battery-powered portable electronics - emphasizing small solution size, wide input range, and intelligent power-save mode transitions without sacrificing transient performance.
FAQ
What is the output voltage accuracy of the TPS62054DGSR over temperature and load?
The TPS62054DGSR delivers a fixed 1.8 V output with ±3% tolerance across the full operating range of –40°C to +85°C ambient temperature and 0 mA to 600 mA load current, as specified in the Electrical Characteristics table of the SLVS432F datasheet. This accuracy is maintained by an internal precision voltage divider and 0.5 V bandgap reference, eliminating drift-related calibration needs in end equipment.
Can the TPS62054DGSR operate with an input voltage lower than its output voltage?
No - the TPS62054DGSR is a step-down (buck) converter and cannot regulate when VIN falls below VO. However, it supports 100% duty cycle operation, allowing regulation down to VIN = VO + (IO × RDS(ON)), which enables functionality as low as ~1.92 V input at 800 mA load. Below that, the output follows the input (dropout mode), but regulation ceases.
How does the SYNC pin affect efficiency and noise performance in the TPS62054DGSR?
When SYNC is pulled HIGH (>1.5 V), the TPS62054DGSR operates in forced fixed-frequency PWM mode, delivering low-noise, predictable switching spectra ideal for RF-sensitive circuits - though efficiency drops to ~85% at light loads. When SYNC is LOW (<0.3 V), it enters auto-switching PFM/PWM mode, maintaining >90% efficiency down to 10 mA while increasing spectral noise spread.
Is external compensation required for stability with the TPS62054DGSR?
No - the TPS62054DGSR uses internal compensation optimized for standard 10 µH inductors and 22 µF ceramic output capacitors. TI's recommended layout (including PGND connection to thermal pad and short SW trace) ensures unconditional stability across all operating conditions without external RC networks or type-II/III compensators.
What happens to the PG and LBO outputs when the TPS62054DGSR is disabled via the EN pin?
When EN is driven LOW, the TPS62054DGSR enters shutdown mode: the PG pin is actively pulled to GND, and the LBO pin becomes high-impedance (open-drain disabled). Both outputs remain inactive until EN returns HIGH and the device completes soft-start - confirming that PG and LBO status reflects only enabled operational states, not standby conditions.
TPS62054DGSR 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):
- 1.8V
- 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
TPS62054DGSR FAQ
1.How can I place an order for TPS62054DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62054DGSR 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 TPS62054DGSR reliable?
The price and inventory of TPS62054DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62054DGSR is usually 5 days.
3.What payment methods are accepted for TPS62054DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62054DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62054DGSR?
TPS62054DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62054DGSR 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 TPS62054DGSR?
For technical support, including TPS62054DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62054DGSR requirements.
6.How does Aetrix verify that TPS62054DGSR is sourced from the original manufacturer or authorized distributors?
All TPS62054DGSR 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 TPS62054DGSR meets industry standards.
7.What is the process for return or replacement of TPS62054DGSR?
All TPS62054DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62054DGSR, 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 TPS62054DGSR part is unused and in its original packaging.
Return procedure for TPS62054DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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