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Texas Instruments TPS61020DRCRG4
- Part No.:
- TPS61020DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61020DRCRG4.pdf
- Description:
- IC REG BOOST ADJ 1.5A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,535
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Product details
Overview
TPS61020DRCRG4 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 - used in portable medical devices and camera LED flash circuits.
For engineers reviewing the TPS61020DRCRG4 datasheet, TPS61020DRCRG4 pinout, TPS61020DRCRG4 application, or TPS61020DRCRG4 equivalent, key selection criteria include input voltage range (0.9–6.5 V), adjustable output voltage capability (1.8–5.5 V), 1500 mA switch current limit, Power Save Mode operation, and VSON-10 package thermal performance (RθJA = 47.2°C/W).
Technical Context
The TPS61020DRCRG4 implements a fixed-frequency (480–720 kHz) PWM controller with synchronous rectification using integrated NMOS/PMOS switches. Its feed-forward control loop monitors VBAT, VOUT, and SW node voltage drop to directly adjust duty cycle - bypassing slow error-amplifier response for dynamic load transients.
It supports down-regulation mode when VBAT ≥ VOUT (e.g., regulating 3.3 V from 3.6 V Li-ion), where the PMOS rectifier operates as a linear pass element. Thermal protection triggers at 140°C with 20°C hysteresis, and undervoltage lockout disables startup below ~0.8 V VBAT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 6.5 V - enables operation from deeply discharged alkaline (0.9 V/cell) or fully charged Li-ion (4.2 V) |
| Output Voltage Range | 1.8 V to 5.5 V (adjustable via FB pin) - supports 3.3 V logic rails and 5 V USB-peripheral interfaces |
| Switch Current Limit | 1500 mA - sets maximum inductor peak current for stable 200 mA output under worst-case VBAT |
| Quiescent Current | 25 µA (typ) - extends battery life in always-on portable audio or medical monitoring modes |
| Efficiency | 96% (peak) - minimizes thermal rise in sealed enclosures like handheld diagnostics tools |
| Oscillator Frequency | 480–720 kHz - balances EMI filtering complexity and inductor size for compact PCB layouts |
| Feedback Reference | 500 mV (±10 mV) - defines output accuracy; enables precise resistor-divider programming of VO |
Pinout & Package
The TPS61020DRCRG4 is housed in a thermally enhanced 3.0 mm × 3.0 mm VSON-10 PowerPAD™ package with exposed thermal pad soldered to PGND for optimal power dissipation (RθJC(bot) = 3.6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic: connects to VBAT to enable regulator; ties to GND for <1 µA shutdown current |
| VOUT (Pin 2) | Regulated output | Delivers boosted DC voltage; requires 2.2 µF ceramic + 47 µF tantalum for stability and transient response |
| FB (Pin 3) | Feedback input | Senses output via resistor divider; 500 mV reference enables precise VO programming (e.g., 3.3 V = R3/R4 = 5.6:1) |
| LBO (Pin 4) | Low-battery open-drain output | Asserts low when LBI voltage drops below 500 mV; requires external 1 MΩ pull-up for MCU interrupt signaling |
| GND (Pin 5) | Control ground reference | Reference for all analog circuitry (FB, LBI, EN, PS); must be star-connected near PowerPAD™ |
| VBAT (Pin 6) | Main input supply | Accepts 0.9–6.5 V battery source; internal UVLO prevents startup below ~0.8 V |
| LBI (Pin 7) | Low-battery sense input | Programmable threshold (500 mV ±10 mV hysteresis); connect resistive divider from VBAT to set cutoff (e.g., 2.4 V → 470k/1M) |
| PS (Pin 8) | Power Save Mode control | Low = enable variable-frequency light-load mode; high = force fixed 480–720 kHz operation |
| SW (Pin 9) | Boost switch node | Connects to inductor and catch diode; high dv/dt node requiring tight layout and antiringing design |
| PGND (Pin 10) | Power ground | Source connection for NMOS switch; must tie to PowerPAD™ and separate from signal GND at single point |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectifier | Replaces Schottky diode with low-RDS(ON) PMOS, enabling 96% efficiency and eliminating reverse recovery losses |
| Load disconnect during shutdown | Isolates VOUT from VBAT via backgate control - prevents battery drain when EN = low, no external MOSFET needed |
| Down-regulation capability | Maintains regulation even when VBAT ≥ VOUT (e.g., 3.6 V Li-ion → 3.3 V rail), avoiding need for separate LDO stage |
| Integrated anti-ringing switch | Clamps SW node to VBAT during DCM, suppressing EMI without external snubber components |
| Thermal shutdown with hysteresis | Shuts down at 140°C junction temperature and re-enables at 120°C - protects against sustained overload in sealed housings |
Applications
| Portable Medical Sensors | Camera LED Flash Drivers |
|---|---|
Use Scenario: Continuous glucose monitor powered by single alkaline AA cell, operating down to 0.9 V. IC Role / Device Role / Timing Role: Primary DC-DC regulator generating stable 3.3 V for microcontroller, sensor interface, and BLE radio. Use Value: 25 µA quiescent current extends battery life beyond 6 months; down-regulation maintains output as battery decays from 1.5 V to 0.9 V. | Use Scenario: Smartphone front-facing camera requiring brief 350 mA white LED pulse at 3.3 V. IC Role / Device Role / Timing Role: High-efficiency boost converter supplying regulated 3.3 V from 3.6–4.2 V Li-ion battery during flash activation. Use Value: 1500 mA switch current limit supports 350 mA LED drive with margin; Power Save Mode minimizes idle current between shots. |
| Handheld Audio Players | Industrial Handheld Scanners |
Use Scenario: MP3 player using single NiMH cell (1.2 V nominal) with audio codec requiring clean 3.3 V supply. IC Role / Device Role / Timing Role: Main power rail generator with low-noise operation and fast transient response to DAC load steps. Use Value: 96% efficiency reduces heat in plastic enclosure; integrated LBO alerts MCU before battery depletion halts playback. | Use Scenario: Rugged barcode scanner powered by two alkaline cells (2.4 V fresh, 1.8 V depleted) needing 5 V for imager and 3.3 V for processor. IC Role / Device Role / Timing Role: Dual-rail capable boost converter (via external feedback) delivering 5 V for CMOS sensor and 3.3 V for ARM Cortex-M core. Use Value: Adjustable output supports both rails; 0.9 V start-up enables full functionality even after extended storage discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61025DRCR | Fixed 3.3 V output; same 1500 mA switch limit and VSON-10 package | No external FB divider required; simplified BOM for fixed-rail designs | Select when 3.3 V is fixed requirement and board space is constrained - eliminates R3/R4 resistors |
| TPS61028DRCR | 800 mA switch current limit; identical pinout and feature set | Lower output current capability (≤120 mA at 3.3 V from 0.9 V) | Choose for ultra-low-power applications where 200 mA peak is unnecessary - reduces inductor size and cost |
Compared with TPS61020DRCRG4, TPS61025DRCR offers plug-and-play 3.3 V regulation but forfeits output flexibility, while TPS61028DRCR trades peak current headroom for lower quiescent current in sub-100 mA use cases - both share identical thermal and footprint characteristics.
Availability
TPS61020DRCRG4 is available at Aetrix Electronics and suitable for portable medical sensors, camera LED flash drivers, handheld audio players, industrial handheld scanners, and battery-powered IoT edge nodes requiring stable component supply across long production lifecycles.
Supply support for TPS61020DRCRG4 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 specializing in analog and embedded processing technologies, with over 90 years of innovation in power management ICs.
The TPS6102x product line was engineered specifically for ultra-low-voltage battery-powered applications - delivering high efficiency across wide input ranges while integrating critical system functions like low-battery detection and load disconnect.
FAQ
What is the minimum input voltage required for TPS61020DRCRG4 to start switching?
The TPS61020DRCRG4 requires a minimum input voltage of 0.9 V at VBAT to initiate startup, verified under RL = 120 Ω load per TI SLVS451G datasheet Section 8.5. Below this threshold, the undervoltage lockout circuit prevents operation to avoid unstable regulation. Once running, it sustains regulation down to 0.9 V - making it suitable for single-cell alkaline or NiMH systems nearing end-of-life.
Can TPS61020DRCRG4 regulate output voltage when input exceeds output (e.g., 4.2 V Li-ion to 3.3 V)?
Yes, the TPS61020DRCRG4 supports down-regulation mode when VBAT ≥ VOUT. In this mode, the internal PMOS rectifier operates as a linear pass element to clamp VOUT, maintaining regulation without external components. This behavior is confirmed in Section 10.3.3 of the datasheet and enables elimination of a separate LDO in single-battery systems.
How does the Power Save Mode affect TPS61020DRCRG4 efficiency at light loads?
Power Save Mode improves light-load efficiency by disabling fixed-frequency switching and pulsing only when VOUT droops below regulation. At 1 mA output, TPS61020DRCRG4 achieves >85% efficiency versus ~65% in forced-PWM mode. This is enabled by pulling PS pin low and is detailed in Section 10.4.2 of the SLVS451G datasheet.
What is the function of the LBI and LBO pins on TPS61020DRCRG4?
The LBI pin accepts a scaled battery voltage (via resistor divider) and compares it to an internal 500 mV threshold; when voltage drops below this, the open-drain LBO pin pulls low to signal low battery. Both functions activate only when EN = high. Unused LBI must be tied to GND or VBAT - floating is prohibited per Section 7 of the datasheet.
Does TPS61020DRCRG4 require external components for EMI suppression?
No, the TPS61020DRCRG4 integrates an anti-ringing switch that clamps the SW node to VBAT during discontinuous conduction mode, actively damping parasitic oscillations. This eliminates the need for external snubbers or ferrite beads in most layouts, as validated in Figure 12 and Section 10.3.8 of the SLVS451G datasheet.
TPS61020DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
TPS61020DRCRG4 FAQ
1.How can I place an order for TPS61020DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61020DRCRG4 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 TPS61020DRCRG4 reliable?
The price and inventory of TPS61020DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61020DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS61020DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61020DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61020DRCRG4?
TPS61020DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61020DRCRG4 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 TPS61020DRCRG4?
For technical support, including TPS61020DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61020DRCRG4 requirements.
6.How does Aetrix verify that TPS61020DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61020DRCRG4 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 TPS61020DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS61020DRCRG4?
All TPS61020DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61020DRCRG4, 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 TPS61020DRCRG4 part is unused and in its original packaging.
Return procedure for TPS61020DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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