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Texas Instruments TPS62203DBVR
- Part No.:
- TPS62203DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS62203DBVR.pdf
- Description:
- IC REG BUCK 3.3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,085
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Product details
Overview
TPS62203DBVR from Texas Instruments is a fixed-output synchronous step-down DC-DC converter delivering 3.3 V at up to 300 mA, operating from 3.6 V to 6 V input, with 1 MHz fixed-frequency PWM and power-save mode for high efficiency across load range. It powers low-voltage microcontrollers in battery-powered portable equipment.
For engineers reviewing the TPS62203DBVR datasheet, TPS62203DBVR pinout, TPS62203DBVR application, or TPS62203DBVR equivalent, key selection factors include its 3.3 V fixed output, 15 µA typical quiescent current in power-save mode, SOT-23-5 package footprint, and dynamic voltage positioning for transient response in space-constrained designs.
Technical Context
The TPS62203DBVR implements a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation using only small ceramic capacitors (4.7 µF input, 10 µF output). Its dual-mode operation-fixed-frequency PWM at medium-to-heavy loads and pulse-frequency modulation (PFM) at light loads-maintains ≥90% efficiency from 1 mA to 300 mA.
Internal circuitry includes undervoltage lockout (1.5–2.0 V threshold), soft-start limiting inrush current, 100% duty-cycle low-dropout operation, and dynamic output-voltage positioning (±0.8% offset at light load) to minimize transient undershoot/overshoot. The integrated P-channel and N-channel MOSFETs feature on-resistances of 670/530 mΩ (typ) at 2.5 V and 530/430 mΩ (typ) at 3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% over 0–300 mA load and 3.6–6 V input; enables direct replacement of LDOs in 3.3 V rail systems. |
| Input Voltage Range | 3.6 V to 6 V; compatible with single-cell Li-ion (fully charged) and standard 5 V rails without external regulators. |
| Max Output Current | 300 mA continuous; supports core logic and I/O of low-power MCUs like MSP430 or ARM Cortex-M0+. |
| Switching Frequency | 1 MHz (650–1500 kHz range); allows compact 10 µH inductor and 0805-size 10 µF ceramic output capacitor. |
| Quiescent Current | 15 µA typical in power-save mode; extends battery life in always-on sensor nodes and standby states. |
| Efficiency Peak | Up to 95% at 200 mA / 3.7 V input; reduces thermal load in sealed enclosures and eliminates need for heatsinking. |
| Enable Threshold | EN high-level ≥1.3 V; supports direct interface with 1.8 V or 3.3 V GPIO without level-shifting. |
Pinout & Package
TPS62203DBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VI (Pin 1) | Input supply connection | Accepts 3.6–6 V; requires local 4.7 µF ceramic decoupling placed adjacent to pin for EMI suppression. |
| GND (Pin 2) | Power ground reference | Primary return path for switch current; must connect to low-impedance ground plane under IC body. |
| EN (Pin 3) | Enable control input | Active-high logic; pulling below 0.4 V disables device, reducing quiescent current to 0.1 µA. |
| FB (Pin 4) | Feedback sense node | Internally connected to 3.3 V divider; no external resistors needed-simplifies layout and eliminates tuning error. |
| SW (Pin 5) | Switch node | Drives external 10 µH inductor; high dv/dt requires tight SW–inductor–GND loop to minimize EMI radiation. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains +0.8% output offset at light load to provide headroom for 300 mA step transients-reduces required output capacitance by 50% vs fixed-setpoint converters. |
| 100% Duty-Cycle Operation | Enables regulation down to VIN = VOUT + (IOUT × rDS(ON)_P); extends usable battery range in Li-ion systems from 4.2 V to ~3.4 V before dropout. |
| Integrated Power MOSFETs | P-channel (530 mΩ typ @ 3.6 V) and N-channel (430 mΩ typ @ 3.6 V) switches eliminate external FETs and gate drivers-reducing BOM count by 4 components. |
| Soft-Start Circuit | Digital ramp limits peak inrush to ≤480 mA; achieves 800 µs startup time with 10 µF output cap-prevents brownout during MCU reset sequences. |
| Undervoltage Lockout | Activates below 1.5 V input; prevents erratic switching and shoot-through during battery depletion-ensures clean shutdown behavior. |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub |
|---|---|
Use Scenario: Powers baseband processor core rail in LTE smartphones during active data transmission and idle monitoring cycles. IC Role / Device Role / Timing Role: Primary 3.3 V buck regulator supplying CPU I/O and RF interface blocks with fast load-step response. Use Value: Dynamic voltage positioning ensures <100 mV undershoot during 0→300 mA 10 µs load steps-avoids processor reset or communication loss. |
Use Scenario: Supplies 3.3 V to ultra-low-power motion sensor fusion hub (accelerometer + gyro + MCU) in fitness trackers. IC Role / Device Role / Timing Role: Always-on power source maintaining sub-µA sleep current while enabling instant wake-up on motion detection. Use Value: 15 µA quiescent current in PFM mode extends coin-cell battery life to >12 months-eliminates need for battery replacement in consumer wearables. |
| Industrial Handheld Terminal | Medical Point-of-Care Monitor |
Use Scenario: Provides regulated 3.3 V for barcode scanner engine, display driver, and secure element in ruggedized field terminals. IC Role / Device Role / Timing Role: Main system rail converter supporting wide input (4.5–5.5 V USB or battery) with robust ESD tolerance (±2 kV HBM). Use Value: 220 °C/W junction-to-ambient thermal resistance enables full 300 mA output without derating in 50 °C ambient-no thermal throttling during extended scanning sessions. |
Use Scenario: Powers patient interface module (touch controller, LED indicators, audio alert) in portable ECG monitors running on rechargeable Li-ion. IC Role / Device Role / Timing Role: Safety-critical auxiliary rail ensuring uninterrupted operation during battery swap or low-VIN conditions. Use Value: 100% duty-cycle capability maintains regulation until battery reaches 3.35 V-maximizes usable capacity and avoids premature shutdown during clinical use. |
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 |
|---|---|---|---|
| TPS62231DBVR | Same SOT-23-5 package, 3.3 V fixed output, but higher 600 mA rating and 2.05–6.0 V input range; 25 µA quiescent current in PFM mode. | Supports higher-current peripherals (e.g., Wi-Fi coexistence modules); less optimal for ultra-low-IQ battery-only use cases. | Select when future-proofing for higher load headroom or wider input range is required; not drop-in due to different EN threshold (1.18 V min). |
| AP3012KTR-G1 | SOT-23-5, 3.3 V fixed, 300 mA, but asynchronous (external diode required); 1.8–5.5 V input; 80 µA quiescent current; no power-save mode. | Lacks dynamic voltage positioning and PFM efficiency boost-results in ~10% lower light-load efficiency and larger output ripple. | Choose for cost-sensitive, non-battery applications where 85% peak efficiency suffices and board space allows external diode placement. |
Compared with TPS62203DBVR, TPS62231DBVR offers higher current headroom at the expense of slightly higher IQ, while AP3012KTR-G1 trades efficiency and integration for lower unit cost-making TPS62203DBVR the optimal balance of size, IQ, and transient performance for space-constrained battery systems.
Availability
TPS62203DBVR is available at Aetrix Electronics and suitable for portable medical devices, industrial handheld terminals, and wearable electronics requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS62203DBVR 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 leadership in power management ICs for portable and industrial applications.
The TPS6220x product line was designed specifically for high-efficiency, small-footprint DC-DC conversion in battery-powered portable electronics-including smartphones, PDAs, and digital cameras-where minimal quiescent current and fast transient response are critical.
FAQ
What is the exact output voltage tolerance of the TPS62203DBVR under full load?
The TPS62203DBVR delivers a nominal 3.3 V output with ±3% tolerance across the full operating range: 0–300 mA load current and 3.6–6 V input voltage at ambient temperatures from –40°C to +85°C. This specification is verified per TI's SLVS417F datasheet Section 6.5, ensuring compatibility with 3.3 V logic interfaces without additional regulation.
Does the TPS62203DBVR require external feedback resistors to set its output voltage?
No, the TPS62203DBVR does not require external feedback resistors. As a fixed-output variant, it integrates an internal resistor divider tied to the FB pin, configured for 3.3 V output. The FB pin is internally connected and must not be externally loaded-unlike the adjustable TPS62200, which requires external R1/R2.
Can the TPS62203DBVR operate from a 3.3 V input supply?
No, the TPS62203DBVR cannot operate from a 3.3 V input. Its minimum recommended input voltage is 3.6 V per Section 6.3 of the datasheet. At 3.3 V input, the device will activate undervoltage lockout and remain disabled-this ensures reliable regulation of the 3.3 V output without dropout or instability.
What is the maximum achievable efficiency of the TPS62203DBVR and at what conditions?
The TPS62203DBVR achieves up to 95% peak efficiency at 200 mA load with 3.7 V input, as shown in Figure 6 of the SLVS417F datasheet. Efficiency remains above 85% from 1 mA to 300 mA across 3.6–5 V inputs, enabled by synchronous rectification and power-save mode optimization.
Is the TPS62203DBVR pin-compatible with other members of the TPS6220x family?
Yes, all TPS6220x devices-including TPS62203DBVR, TPS62202DBVR, and TPS62200DBVR-are fully pin-compatible in the SOT-23-5 (DBV) package. Pin functions (VI, GND, EN, FB, SW) and physical layout are identical; only the internal feedback network differs between fixed- and adjustable-output variants.
TPS62203DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS62203DBVR FAQ
1.How can I place an order for TPS62203DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62203DBVR 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 TPS62203DBVR reliable?
The price and inventory of TPS62203DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62203DBVR is usually 5 days.
3.What payment methods are accepted for TPS62203DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62203DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62203DBVR?
TPS62203DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62203DBVR 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 TPS62203DBVR?
For technical support, including TPS62203DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62203DBVR requirements.
6.How does Aetrix verify that TPS62203DBVR is sourced from the original manufacturer or authorized distributors?
All TPS62203DBVR 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 TPS62203DBVR meets industry standards.
7.What is the process for return or replacement of TPS62203DBVR?
All TPS62203DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62203DBVR, 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 TPS62203DBVR part is unused and in its original packaging.
Return procedure for TPS62203DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62203DBVR Tags
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TPS562201DDCR
Texas Instruments
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MC34063ABD-TR
STMicroelectronics
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TPS561201DDCR
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MC33063ADR
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AP3012KTR-G1
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TLV61048DBVR
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AZ34063UMTR-G1
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MC34063EBD-TR
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