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Texas Instruments TPS62101DR
- Part No.:
- TPS62101DR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62101DR.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,169
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Product details
Overview
TPS62101DR from Texas Instruments is a synchronous buck DC-DC converter optimized for single/dual Li-ion battery-powered portable electronics. It operates from 2.5 V to 9 V input, delivers adjustable 0.8 V to 8 V output at up to 500 mA, and features dual-auto-mode switching between constant-frequency PWM (600 kHz) and pulsed-variable-frequency (PFM) for high light-load efficiency. Used in GPS devices and digital still cameras where battery life and compact power delivery are critical.
For engineers reviewing the TPS62101DR datasheet, TPS62101DR pinout, TPS62101DR application, or TPS62101DR equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (auto/forced-PWM/forced-PFM), real-world load-step performance data, and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The TPS62101DR integrates N-channel and P-channel MOSFETs, uses voltage-mode PWM control with internal 0.8-V reference, and implements automatic mode selection via FB voltage thresholds (770 mV–815 mV). Its tri-function MODE pin enables forced constant-frequency (600 kHz), forced variable-frequency, or auto-switching operation based on load current detection.
It supports external synchronization up to 1.2 MHz (2× nominal frequency), includes soft-start (~5 ms), dual overcurrent protection (1 A fast-trip + 1.2 A soft-start-triggered), and thermal shutdown at 170°C. The SD/SYNC pin combines shutdown activation (>20 µs high) and rising-edge sync input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 9 V - supports 1-cell (2.5–4.2 V) and 2-cell (5–8.4 V) Li-ion battery inputs without pre-regulation. |
| Output Voltage Range | 0.8 V to 8 V - adjustable via external resistor divider; FB threshold is 800 mV ±10 mV at 25°C. |
| Max Output Current | 500 mA - sustained continuous output under thermal limits; peak switch current limited to 1.25 A. |
| Switching Frequency | 600 kHz (nominal) - fixed frequency in forced-PWM mode; synchronizable up to 1.2 MHz. |
| Efficiency Modes | Dual-auto-mode - automatically transitions between 600 kHz PWM (heavy load) and PFM (light load ≤100 mA) to maintain >85% efficiency down to 1 mA. |
| Quiescent Current | 250 µA (typ, burst mode) - enables >1000-hour shelf life in battery-backed standby applications. |
| Shutdown Current | 1 µA (typ) - reduces system leakage during deep sleep or transport mode. |
Pinout & Package
TPS62101DR is housed in an 8-pin SOIC (D package), surface-mount, thermally enhanced plastic body with standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; top-side marking includes TI logo and date code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Accepts 2.5–9 V; supplies internal circuitry and high-side FET; requires local 1-µF ceramic decoupling. |
| SD/SYNC (Pin 2) | Dual-function control | Rising-edge sync input (0–2 V); >20 µs high pulse triggers shutdown; no internal pull-down - must be actively driven. |
| MODE (Pin 3) | Operating mode selector | High = forced PWM; low = forced PFM; floating = auto-switching; open-circuit voltage ~450 mV. |
| AGND (Pin 4) | Analog ground reference | Reference for error amplifier, FB comparator, and internal thresholds; separate from PGND to minimize noise coupling. |
| COMP (Pin 5) | Error amplifier output | Connects to RC compensation network; goes high-Z in PFM mode; drives PWM duty cycle in PWM mode. |
| FB (Pin 6) | Feedback input | Senses divided output voltage; regulated to 800 mV in PWM mode; thresholds 770/785/815 mV govern PFM entry/exit. |
| PGND (Pin 7) | Power ground return | Return path for high-current SW node and internal FETs; must be low-inductance connection to output capacitor ground. |
| SW (Pin 8) | Switch node output | Drives external LC filter; connects to inductor and Schottky catch diode cathode; voltage swings from 0 to VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-channel FETs eliminate external Schottky loss; improves full-load efficiency by 8–12% vs diode-based buck. |
| Auto-mode transition logic | Hardware-based FB voltage monitoring (770 mV/785 mV/815 mV thresholds) enables seamless, zero-software PWM↔PFM handoff at ~100 mA load. |
| Triple overcurrent protection | Two-stage current limiting (1 A fast-trip + 1.2 A soft-start trigger) plus thermal shutdown at 170°C prevents damage during short-circuit or overload. |
| Programmable soft-start | ~5 ms built-in closed-loop soft-start ramps reference voltage linearly; eliminates output overshoot and inrush stress on output capacitors. |
| External synchronization | SD/SYNC pin accepts external clock up to 1.2 MHz; allows EMI reduction via spread-spectrum or multi-rail phase alignment. |
Applications
| GPS Navigation Devices | Digital Still Cameras |
|---|---|
Use Scenario: Powering baseband processor, RF front-end, and GNSS receiver from dual Li-ion cells (7.2–8.4 V). IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3 V at 0–500 mA with <50 µs transient response to burst-mode RF transmission. Use Value: Dual-auto-mode maintains >88% efficiency at 10 mA idle current while supporting 500 mA peak during satellite acquisition. |
Use Scenario: Supplying image sensor, ISP, and LCD backlight driver in compact handheld camera with 1-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Adjustable 1.8 V output regulator enabling low-voltage sensor operation; MODE pin tied to microcontroller GPIO for dynamic mode control. Use Value: 250 µA quiescent current extends standby time to >14 days; 600 kHz switching allows use of small 4.7 µH inductor and 10 µF MLC output cap. |
| Cellular Telephones | Satellite Telephones |
Use Scenario: Generating core voltage for application processor and PMIC in legacy 2G/3G handsets powered by single Li-ion cell. IC Role / Device Role / Timing Role: Secondary buck converter stepping 4.2 V battery to 2.85 V for RF transceiver; SD/SYNC synchronized to baseband clock to suppress beat frequencies. Use Value: Synchronization capability reduces conducted EMI by 12 dB at 1.2 MHz; shutdown current <1 µA preserves battery during call standby. |
Use Scenario: Providing regulated 5 V rail for LNA, power amplifier, and modem in ruggedized satellite comms terminal with wide temperature range. IC Role / Device Role / Timing Role: High-reliability buck converter operating across –40°C to +85°C junction; thermal shutdown protects against enclosure overheating in solar-exposed enclosures. Use Value: 150°C max junction rating and 170°C thermal shutdown ensure safe operation under sustained 500 mA load at elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040DR | Fixed 3.3 V output; 3-MHz switching; 600 mA max; no MODE pin or PFM mode - only forced PWM. | Best for space-constrained designs needing fixed output and ultra-high-frequency operation; unsuitable for battery-life-critical PFM applications. | Select TPS62040DR only when output voltage is fixed and light-load efficiency is secondary to size and transient response. |
| TPS62200DBVR | Lower IQ (22 µA), 300 mA max, 1.5-MHz fixed frequency, no sync or MODE pin; uses external diode (asynchronous). | Targeted at ultra-low-power sensor nodes; lacks auto-mode, sync, and high-current capability - not drop-in for TPS62101DR's dual-cell or 500 mA use cases. | Choose TPS62200DBVR only for sub-100 mA, fixed-output, minimal-BOM applications where cost and IQ dominate over flexibility and performance. |
Compared with TPS62101DR, TPS62040DR trades programmability and light-load efficiency for higher frequency and smaller magnetics, while TPS62200DBVR sacrifices integration and current capability to achieve ultra-low quiescent current - neither replicates the auto-mode + sync + 500 mA combination central to TPS62101DR's portable power architecture.
Availability
TPS62101DR is available at Aetrix Electronics and suitable for GPS navigation devices, digital still cameras, and cellular telephones requiring stable component supply with long-term production support and consistent parametric performance.
Supply support for TPS62101DR 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 ICs, with decades of expertise in battery-powered system power solutions.
The TPS6210x family was designed specifically for high-efficiency, multi-mode DC-DC conversion in portable Li-ion battery systems - emphasizing adaptive efficiency, compact footprint, and robust protection for consumer and industrial mobile equipment.
FAQ
What is the exact switching frequency of the TPS62101DR?
The TPS62101DR has a nominal switching frequency of 600 kHz in constant-frequency PWM mode. This is confirmed in the Electrical Characteristics table (page 5) under "SW switching frequency" for the TPS62101 variant. It can be externally synchronized up to 1.2 MHz but will not operate reliably above that limit due to sawtooth amplitude degradation.
Does the TPS62101DR support automatic transition between PWM and PFM modes?
Yes, the TPS62101DR supports true hardware-based auto-mode switching. When the MODE pin is left floating, the IC monitors FB voltage thresholds (770 mV for exit, 785–815 mV for entry) to autonomously shift between 600 kHz PWM and pulsed-variable-frequency PFM - no external controller or firmware required.
What is the maximum output current capability of the TPS62101DR?
The TPS62101DR delivers up to 500 mA of continuous output current under recommended operating conditions (TJ ≤ 85°C, proper PCB layout, and adequate thermal relief). Its internal switch current limit is 1.25 A, but sustained 500 mA requires appropriate inductor sizing (e.g., 15 µH) and thermal management per the design examples in the datasheet.
How does the SD/SYNC pin function on the TPS62101DR?
The SD/SYNC pin on the TPS62101DR serves two distinct roles: (1) applying a >20 µs high pulse shuts down the IC, reducing VIN current to 1 µA; (2) applying rising-edge pulses up to 1.2 MHz synchronizes the internal oscillator. The pin has no internal pull-down, so it must be actively driven - floating causes erratic behavior.
What package type and pin count does the TPS62101DR use?
The TPS62101DR uses an 8-pin SOIC (D package), as explicitly stated in the "Available Options" table (page 2) and shown in the D-package top-view diagram (page 2). It is not offered in any other package variant, and all pin functions (VIN, SD/SYNC, MODE, AGND, COMP, FB, PGND, SW) are defined for this 8-pin configuration.
TPS62101DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 8V
- Current - Output:
- 500mA
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS62101DR FAQ
1.How can I place an order for TPS62101DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62101DR 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 TPS62101DR reliable?
The price and inventory of TPS62101DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62101DR is usually 5 days.
3.What payment methods are accepted for TPS62101DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62101DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62101DR?
TPS62101DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62101DR 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 TPS62101DR?
For technical support, including TPS62101DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62101DR requirements.
6.How does Aetrix verify that TPS62101DR is sourced from the original manufacturer or authorized distributors?
All TPS62101DR 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 TPS62101DR meets industry standards.
7.What is the process for return or replacement of TPS62101DR?
All TPS62101DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62101DR, 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 TPS62101DR part is unused and in its original packaging.
Return procedure for TPS62101DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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