My Inquiry
My Account
Texas Instruments TPS61201DRCR
- Part No.:
- TPS61201DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61201DRCR.pdf
- Description:
- IC REG BOOST 3.3V 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:6,203
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61201DRCR from Texas Instruments is a synchronous boost converter IC designed for low-input-voltage battery-powered systems. It delivers a fixed 3.3 V output with up to 300 mA load current at VIN ≥ 2.4 V, supports 0.3 V to 5.5 V input range, integrates 1.3-A internal switches, and features automatic transition between boost and down-conversion modes - enabling use in single-cell Li-ion or alkaline-powered portable audio players and medical devices.
For engineers reviewing the TPS61201DRCR datasheet, TPS61201DRCR pinout, TPS61201DRCR application, or TPS61201DRCR equivalent, key selection considerations include its 3.3 V fixed output, Power Save mode control via PS pin, undervoltage lockout programmability via UVLO pin, thermal shutdown protection, and compatibility with compact 3 mm × 3 mm VSON-10 layout.
Technical Context
The TPS61201DRCR implements an average current-mode PWM controller with input/output voltage feedforward for fast transient response. It uses three internal N-channel MOSFETs in a synchronous 3-switch topology, separating GND (control reference) and PGND (power return) to minimize ground shift under high-current switching.
It uniquely supports automatic down-conversion mode when VIN ≥ VOUT - regulating 3.3 V output even from a fully charged 4.2 V Li-ion cell by dynamically adjusting rectifier switch conduction - while maintaining short-circuit protection, soft-start with prebias capability, and thermal shutdown with 20 °C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1% (3.27–3.33 V), internally trimmed - eliminates external feedback resistors and ensures stable regulation across temperature. |
| Input Voltage Range | 0.3 V to 5.5 V - enables startup from depleted single-cell batteries (e.g., 0.5 V) and operation across full discharge curves of alkaline/NiMH/Li-ion cells. |
| Switch Current Limit | Average inductor current limit: 1200–1500 mA - sets maximum input power delivery and prevents inductor saturation during boost or down-conversion. |
| Quiescent Current | 50–70 μA (PS = Low) - minimizes battery drain in always-on portable devices such as PDAs and medical sensors. |
| Switching Frequency | 1.25–1.65 MHz - allows use of small 1–2.2 μH inductors and 10–22 μF ceramic output capacitors for space-constrained PCB layouts. |
| UVLO Threshold | Falling: 235–265 mV; Rising: 330–370 mV - provides hysteresis for stable enable/disable behavior when monitoring battery voltage via external resistor divider on UVLO pin. |
| Thermal Shutdown | 140 °C activation with 20 °C hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures without requiring external thermal management. |
Pinout & Package
The TPS61201DRCR is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with exposed thermal pad (pin 11), requiring solder connection to PGND for optimal power dissipation and reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX (Pin 1) | Auxiliary supply rail | Provides regulated ~2.4–5.5 V bias for internal control circuitry; must be decoupled with 0.1 μF capacitor near device. |
| VOUT (Pin 2) | Regulated output | Delivers fixed 3.3 V to load; connects directly to FB pin for fixed-output configuration - no external divider needed. |
| L (Pin 3) | Inductor connection | High-side switch node; connects to 1–2.2 μH inductor; requires low-inductance path to PGND to minimize EMI and switching losses. |
| PGND (Pin 4) | Power ground | Return path for high-current switches and inductor; must be connected to PCB ground plane with multiple vias and separated from signal GND at single point. |
| VIN (Pin 5) | Main input supply | Accepts 0.3–5.5 V battery or energy harvester source; requires 10 μF ceramic input capacitor placed adjacent to pin. |
| EN (Pin 6) | Enable control | Active-high logic input (VIH = 1.2 V min); floating state disables device - must be pulled high via resistor or microcontroller GPIO. |
| UVLO (Pin 7) | Undervoltage monitor | Programmable threshold input; connect to resistor divider from VIN to set custom battery depletion cutoff (e.g., 2.8 V). |
| PS (Pin 8) | Power Save mode control | Active-low input (VIL = 0.4 V max); low = enable variable-frequency light-load mode; high = force fixed 1.25–1.65 MHz operation. |
| GND (Pin 9) | Control ground | Reference for EN, PS, UVLO, FB; must tie to PGND at single point near device to avoid noise coupling into feedback loop. |
| FB (Pin 10) | Feedback input | Internally connected to VOUT for TPS61201DRCR - no external components required; unused in fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic boost/down-conversion mode | Enables 3.3 V regulation from input voltages both below (e.g., 2.4 V) and above (e.g., 4.2 V) VOUT - eliminating need for separate buck or LDO stages in wide-input battery systems. |
| Synchronous 3-switch topology | Uses three integrated N-MOSFETs to achieve >90% efficiency at 300 mA/3.3 V (VIN ≥ 2.4 V) while disconnecting load during shutdown - preventing reverse current flow. |
| Programmable UVLO via external divider | Allows precise battery end-of-life detection (e.g., 2.5 V cutoff) using two resistors on UVLO pin - extending usable runtime without system-level voltage monitoring. |
| Soft-start with prebias support | Ramps output from 0 V with controlled current limit (400 mA → 1500 mA) and tolerates precharged VOUT - preventing inrush damage to downstream circuits like LED strings or ADC references. |
| Load disconnect during shutdown | Opens internal power path when EN = low - isolating battery from load and reducing system standby current to <2 μA (ISD). |
Applications
| Portable Audio Players | Personal Medical Devices |
|---|---|
Use Scenario: Powering DACs, headphone amplifiers, and microcontrollers in battery-operated MP3 players using single-cell alkaline or Li-polymer. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering stable 3.3 V rail from 0.9–4.2 V battery input, managing dynamic load steps during audio playback and standby. Use Value: Maintains >90% efficiency across full battery discharge (0.5–4.2 V), extends playtime by minimizing quiescent loss, and avoids audible switching noise via fixed-frequency mode (PS = high). | Use Scenario: Supplying glucose meters, pulse oximeters, or wearable ECG monitors powered by coin-cell or AAA batteries. IC Role / Device Role / Timing Role: System power manager providing regulated 3.3 V to MCU, sensor interface, and display driver while supporting ultra-low-power sleep states. Use Value: Enables reliable startup at 0.5 V input, reduces standby current to <2 μA in shutdown, and ensures accurate analog measurements via low-noise, well-regulated output. |
| PDAs & Handheld Terminals | White LED Backlight Drivers |
Use Scenario: Powering ARM-based PDA mainboard with LCD, touchscreen, and wireless modules from dual alkaline cells (2.0–3.2 V). IC Role / Device Role / Timing Role: Core voltage regulator supplying 3.3 V to processor I/O and peripherals, adapting seamlessly between boost (2.0 V) and down-conversion (3.2 V) modes. Use Value: Eliminates need for discrete buck-boost IC or manual power-path switching - simplifying BOM and improving system robustness across battery voltage swing. | Use Scenario: Driving 3–5 white LEDs in series (VF ≈ 3.6 V) from a single 3.6 V Li-ion cell in handheld scanners or barcode readers. IC Role / Device Role / Timing Role: Constant-voltage LED driver operating in down-conversion mode to regulate 3.3 V output while sinking LED current through external current-setting resistor. Use Value: Provides consistent brightness over full battery range (4.2 → 2.6 V) without LED current droop or thermal runaway - leveraging built-in short-circuit and thermal protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCR | Adjustable output (1.8–5.5 V) via external resistor divider; identical pinout, package, and core specs. | Requires external feedback network; suitable when system needs flexible VOUT or multi-rail generation. | Select TPS61200DRCR only if adjustable output is required - otherwise TPS61201DRCR reduces component count and improves accuracy. |
| TPS61099YFFR | Lower IQ (300 nA shutdown, 400 nA operating), 3.3 V fixed output, but limited 1.8–5.5 V input and 400 mA max output. | Optimized for ultra-low-power IoT sensors; lacks down-conversion mode and UVLO programming. | Choose TPS61099YFFR for sub-μA standby applications without down-conversion needs; retain TPS61201DRCR for wider VIN and mixed-mode operation. |
Compared with TPS61200DRCR, TPS61201DRCR saves two resistors and guarantees tighter output tolerance; compared with TPS61099YFFR, it supports lower startup voltage (0.5 V vs 1.8 V), higher output current, and automatic VIN ≥ VOUT regulation - making it superior for legacy battery-powered consumer electronics.
Availability
TPS61201DRCR is available at Aetrix Electronics and suitable for portable audio players, personal medical devices, PDAs, white LED backlight drivers, and handheld industrial terminals requiring stable component supply across long production lifecycles.
Supply support for TPS61201DRCR 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-efficient power conversion.
The TPS6120x family was engineered specifically for ultra-low-input-voltage boost applications in single- and multi-cell battery systems - prioritizing startup capability below 1 V, seamless mode transition, and minimal external component count.
FAQ
What is the minimum input voltage required to start up the TPS61201DRCR?
The TPS61201DRCR starts up reliably at 0.5 V input voltage, enabling operation from deeply discharged single-cell batteries. This is achieved through optimized internal bias circuitry and low-threshold control logic - verified per TI SLVS577E datasheet Section 8.5. Startup behavior remains stable across –40°C to 85°C ambient temperature.
Does the TPS61201DRCR require external feedback resistors to set its output voltage?
No, the TPS61201DRCR has a factory-trimmed internal resistor divider that fixes the output at 3.3 V ±1%. The FB pin is internally connected to VOUT, so no external resistors are needed - simplifying design, reducing BOM cost, and improving output accuracy versus adjustable alternatives like TPS61200DRCR.
How does the TPS61201DRCR behave when input voltage exceeds 3.3 V?
When VIN rises to or above 3.3 V, the TPS61201DRCR automatically enters down-conversion mode - regulating VOUT by controlling the duty cycle and conduction of its synchronous rectifier switches. This maintains stable 3.3 V output without external components, though efficiency decreases slightly due to added conduction losses in the power path.
What protection features are integrated into the TPS61201DRCR?
The TPS61201DRCR integrates output short-circuit protection under all operating conditions, thermal shutdown at 140 °C with 20 °C hysteresis, undervoltage lockout (UVLO) with programmable threshold, and input current limiting (1200–1500 mA average). These features prevent damage during fault conditions without requiring external circuitry.
Can the TPS61201DRCR be used with a precharged output capacitor?
Yes, the TPS61201DRCR supports prebias start-up: it detects existing VOUT voltage and ramps output current gradually to avoid reverse current or overshoot. This is critical for systems where VOUT remains charged during host processor reset or brownout events - ensuring safe, glitch-free reinitialization without damaging downstream loads.
TPS61201DRCR 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A (Switch)
- Frequency - Switching:
- 1.25MHz ~ 1.65MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61201DRCR FAQ
1.How can I place an order for TPS61201DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61201DRCR 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 TPS61201DRCR reliable?
The price and inventory of TPS61201DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61201DRCR is usually 5 days.
3.What payment methods are accepted for TPS61201DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61201DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61201DRCR?
TPS61201DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61201DRCR 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 TPS61201DRCR?
For technical support, including TPS61201DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61201DRCR requirements.
6.How does Aetrix verify that TPS61201DRCR is sourced from the original manufacturer or authorized distributors?
All TPS61201DRCR 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 TPS61201DRCR meets industry standards.
7.What is the process for return or replacement of TPS61201DRCR?
All TPS61201DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61201DRCR, 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 TPS61201DRCR part is unused and in its original packaging.
Return procedure for TPS61201DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61201DRCR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
