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Texas Instruments TPS61020DRCR
- Part No.:
- TPS61020DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61020DRCR.pdf
- Description:
- IC REG BOOST ADJ 1.5A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:14,537
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Product details
Overview
TPS61020DRCR from Texas Instruments is a synchronous boost DC-DC converter IC designed for single-cell battery-powered systems. It delivers up to 200 mA output current at 3.3 V from 0.9–6.5 V input, features 96% peak efficiency, 25 µA quiescent current, and integrated low-battery comparator with LBI/LBO pins.
For engineers reviewing the TPS61020DRCR datasheet, TPS61020DRCR pinout, TPS61020DRCR application, or TPS61020DRCR equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters, and real-world implementation guidance for portable power management design.
Technical Context
The TPS61020DRCR implements a fixed-frequency (480–720 kHz) PWM controller with synchronous rectification using integrated NMOS/PMOS switches. Input voltage, output voltage, and switch voltage drop are fed forward directly to the regulator-bypassing slow error-amplifier loops-to enable rapid duty-cycle response under dynamic load or input conditions.
It supports both boost and down-regulation modes: when VIN ≥ VOUT, it enters active down-conversion by modulating the PMOS rectifier's RDS(on) to regulate output, with automatic exit when VIN drops ~50 mV below VOUT. Power Save Mode (enabled via PS pin) reduces switching frequency at light loads to maintain >85% efficiency down to 1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 6.5 V - supports full discharge of single-cell alkaline (to 0.9 V) and operation from Li-ion (up to 4.2 V) or 3.3-V rails. |
| Output Current | Up to 200 mA at 3.3 V - sufficient for powering microcontrollers, sensors, and RF modules in portable devices. |
| Peak Efficiency | 96% - achieved via synchronous rectification with 260 mΩ SWN and 290 mΩ SWP on-resistance, minimizing conduction loss. |
| Quiescent Current | 25 µA (typ) - enables multi-week standby in battery-critical applications like medical wearables or remote sensors. |
| Switching Frequency | 480–720 kHz - balances EMI performance and external component size; anti-ringing circuit suppresses SW node oscillation in DCM. |
| Feedback Reference | 500 mV ±10 mV - allows precise adjustable output (1.8–5.5 V) using external resistor divider; total regulation accuracy ±3%. |
| Low-Battery Threshold | 500 mV at LBI pin - programmable via resistive divider; LBO open-drain output signals battery depletion with 10 mV hysteresis. |
Pinout & Package
TPS61020DRCR is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with PowerPAD™ (exposed thermal pad), requiring solder connection to PGND for optimal thermal dissipation and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic: ties to VBAT to enable; GND disables converter and disconnects load from battery. |
| VOUT (Pin 2) | Regulated boost output | Delivers stable output (adjustable or fixed); connects to output capacitor (C2/C3) and system load. |
| FB (Pin 3) | Feedback input | Monitors output via resistor divider; internal 500 mV reference sets VOUT = 500 mV × (1 + R3/R4). |
| LBO (Pin 4) | Low-battery open-drain output | Active-low flag; requires external pull-up (e.g., 1 MΩ) to signal battery undervoltage condition. |
| GND (Pin 5) | Control ground reference | Reference for EN, PS, FB, LBI; must be connected separately from PGND except at single PCB point near GND pin. |
| VBAT (Pin 6) | Main input supply | Accepts 0.9–6.5 V; feeds internal UVLO (0.8 V threshold) and power stage; start-up possible from 0.9 V. |
| LBI (Pin 7) | Low-battery comparator input | Programmable threshold input; must not float-tie to GND or VBAT if unused; 0.01 µA bias current. |
| PS (Pin 8) | Power Save mode control | Low = enable variable-frequency PSM; high = force fixed-frequency operation (disabled in down-regulation mode). |
| SW (Pin 9) | Switch node | Connects to inductor (L1) and catch diode/capacitor; high dv/dt node-requires tight layout and antiringing design. |
| PGND (Pin 10) | Power ground | Source connection for NMOS switch; must be tied to PowerPAD™ and routed separately from GND until single-point star connection. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PMOS switches replace Schottky diode-reducing conduction loss and enabling 96% efficiency at 200 mA. |
| Load disconnect during shutdown | Special backgate control isolates VOUT from VBAT when EN = low-eliminates battery drain without external MOSFET. |
| Down-regulation capability | Regulates output even when VIN ≥ VOUT (e.g., 4.2 V Li-ion → 3.3 V rail), avoiding need for separate LDO in hybrid power architectures. |
| Integrated anti-ringing switch | Clamps SW node to VBAT during discontinuous conduction mode-suppressing EMI without external snubber components. |
| Thermal and overcurrent protection | 140°C overtemperature shutdown with 20°C hysteresis; 1500 mA peak switch current limit (TPS61020-specific) prevents inductor saturation. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Battery-powered pulse oximeter with OLED display and Bluetooth LE radio. IC Role / Device Role / Timing Role: Primary power manager converting single AA alkaline (0.9–1.5 V) to regulated 3.3 V for MCU, sensor analog front-end, and RF transceiver. Use Value: 25 µA quiescent current extends shelf life; down-regulation maintains stable 3.3 V as battery voltage decays past 3.3 V; LBO alerts firmware before brownout. |
Use Scenario: Sub-GHz ISM band remote with tactile buttons and LED feedback. IC Role / Device Role / Timing Role: Boost converter supplying 3.0 V to ultra-low-power SoC and 5 V to LED driver from single CR2032 coin cell. Use Value: 96% efficiency maximizes usable energy from 220 mAh cell; Power Save Mode sustains >85% efficiency at 100 µA sleep current; small 3×3 mm footprint fits compact enclosure. |
| Handheld Barcode Scanners | Industrial IoT Edge Nodes |
|
Use Scenario: Ruggedized scanner powered by two NiMH cells (1.2–2.4 V range) driving laser diode, CMOS imager, and USB interface. IC Role / Device Role / Timing Role: High-current boost stage delivering 200 mA at 3.3 V while supporting transient 500 mA laser pulses via input capacitance buffering. Use Value: 1500 mA switch current limit handles short bursts without foldback; thermal pad ensures reliable operation at 50°C ambient; LBI monitors cell stack health. |
Use Scenario: LoRaWAN sensor node deployed in remote locations with 10-year battery target. IC Role / Device Role / Timing Role: Primary DC-DC regulator powering ARM Cortex-M0+ MCU, environmental sensors, and SX1276 transceiver from primary lithium thionyl chloride cell (3.6 V). Use Value: 0.1 µA shutdown current prevents parasitic drain; programmable LBO triggers graceful shutdown at 2.8 V; VSON-10 package withstands reflow and vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61022DRCT | Same VSON-10 package; higher 2-A switch current limit; fixed 5-V output; no LBI/LBO pins. | Optimized for 5-V USB-peripheral power; lacks battery monitoring-unsuitable where low-battery signaling is required. | Select TPS61022DRCT only when fixed 5-V output and higher current (>200 mA) are needed and battery supervision is handled externally. |
| MAX17222ETA+ | 2.5-mm × 2.5-mm TDFN-8; 500-kHz fixed frequency; 500-mA switch limit; 1.9-µA quiescent current; no down-regulation. | Better suited for ultra-low-IQ applications (e.g., energy harvesting); smaller footprint but no LBO or down-conversion capability. | Choose MAX17222ETA+ when board space is critical and system operates strictly in boost mode with sub-10-µA standby demand. |
Compared with TPS61020DRCR, TPS61022DRCT trades battery monitoring and input/output flexibility for higher current and fixed output, while MAX17222ETA+ prioritizes minimal quiescent current and size over multifunctionality-making TPS61020DRCR the balanced choice for general-purpose, battery-supervised portable power.
Availability
TPS61020DRCR is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, handheld barcode scanners, and industrial IoT edge nodes requiring stable component supply across long-lifecycle deployments.
Supply support for TPS61020DRCR 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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The TPS6102x family was engineered specifically for ultra-low-voltage battery-powered applications-enabling efficient power conversion from deeply discharged single-cell sources while integrating supervision, protection, and layout-friendly features for compact portable electronics.
FAQ
What is the minimum input voltage required for TPS61020DRCR to start up?
The TPS61020DRCR starts up from as low as 0.9 V at VBAT with a 120-Ω load, enabling full utilization of single-cell alkaline batteries down to end-of-life. This is achieved through optimized gate drive and low-threshold control circuitry-verified per Section 8.5 of the SLVS451G datasheet. The device remains operational until VBAT falls below the 0.8-V UVLO threshold.
Does TPS61020DRCR support output voltages lower than the input voltage?
Yes, the TPS61020DRCR supports down-regulation: when VBAT exceeds the programmed VOUT (e.g., 4.2 V Li-ion → 3.3 V), it actively modulates the PMOS rectifier to maintain regulation. This mode activates automatically above VOUT + ~50 mV and deactivates when VBAT drops below that threshold-detailed in Section 10.3.3 of the datasheet.
How is the low-battery detection threshold set on TPS61020DRCR?
The TPS61020DRCR uses an internal 500-mV comparator reference at the LBI pin. A resistive divider from VBAT to GND scales battery voltage to match this threshold-e.g., R1 = 390 kΩ and R2 = 200 kΩ sets detection at ~3.0 V. LBO asserts low when scaled voltage drops below 500 mV, with 10-mV hysteresis to prevent chatter.
What is the purpose of separate GND and PGND pins on TPS61020DRCR?
GND serves as the reference for control circuitry (EN, PS, FB, LBI), while PGND carries high-switching currents from the NMOS source. Separating them prevents ground bounce from disrupting regulation. They must connect at a single point near the GND pin-critical for stability and noise immunity, as emphasized in Layout Section 13 of the SLVS451G datasheet.
Can TPS61020DRCR operate without external feedback resistors?
No-TPS61020DRCR is the adjustable-output variant and requires an external resistor divider on the FB pin to set VOUT. Unlike fixed-output versions (e.g., TPS61025DRCR), it has no internal feedback network. The typical FB voltage is 500 mV, so VOUT = 500 mV × (1 + R3/R4); R4 is recommended at 200 kΩ for stability.
TPS61020DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61020DRCR FAQ
1.How can I place an order for TPS61020DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61020DRCR 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 TPS61020DRCR reliable?
The price and inventory of TPS61020DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61020DRCR is usually 5 days.
3.What payment methods are accepted for TPS61020DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61020DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61020DRCR?
TPS61020DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61020DRCR 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 TPS61020DRCR?
For technical support, including TPS61020DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61020DRCR requirements.
6.How does Aetrix verify that TPS61020DRCR is sourced from the original manufacturer or authorized distributors?
All TPS61020DRCR 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 TPS61020DRCR meets industry standards.
7.What is the process for return or replacement of TPS61020DRCR?
All TPS61020DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61020DRCR, 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 TPS61020DRCR part is unused and in its original packaging.
Return procedure for TPS61020DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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