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Texas Instruments TPS62202DBVR
- Part No.:
- TPS62202DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS62202DBVR.pdf
- Description:
- IC REG BUCK 1.8V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
TPS62202DBVR from Texas Instruments is a fixed-output 1.8 V, 300 mA synchronous step-down DC-DC converter in SOT-23-5 package, operating from 2.5 V to 6 V input, delivering up to 95% efficiency at 200 mA with 1 MHz PWM switching and 15 µA quiescent current in power save mode-designed for Li-Ion–powered portable devices including smart phones and PDAs.
For engineers reviewing the TPS62202DBVR datasheet, TPS62202DBVR pinout, TPS62202DBVR application, or TPS62202DBVR equivalent, key selection considerations include its fixed 1.8 V output, 5-pin SOT-23 footprint, enable-controlled shutdown (0.1 µA), dynamic voltage positioning for transient headroom, and compatibility with 4.7 µF input / 10 µF ceramic output capacitors.
Technical Context
The TPS62202DBVR implements a voltage-mode PWM controller with input voltage feed-forward, enabling fast line/load regulation using only small ceramic capacitors. Its dual-MOSFET synchronous architecture integrates a P-channel high-side switch (670–850 mΩ at 2.5 V) and N-channel rectifier (530–660 mΩ), supporting discontinuous conduction mode transition into PFM at light loads.
It features undervoltage lockout (1.5–2.0 V threshold), soft-start limiting inrush current via stepped current ramp (60/120/240/480 mA), and 100% duty-cycle low-dropout operation to maximize battery runtime-critical for single-cell Li-Ion systems where input may dip to 2.5 V while maintaining 1.8 V regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6.0 V - supports 1-cell Li-Ion (2.7–4.2 V), 3-cell NiMH/NiCd, or fixed 3.3 V/5 V rails. |
| Output Voltage | Fixed 1.8 V ±3% - precision trimmed for DSP/core logic supply in portable processors. |
| Max Output Current | 300 mA - sufficient for low-power ARM Cortex-M cores or baseband ICs in handheld devices. |
| Switching Frequency | 650–1500 kHz (typ. 1 MHz) - enables compact 10 µH inductor and minimal EMI filtering. |
| Quiescent Current | 15 µA (typ.) in power save mode - extends battery life during standby/sleep states. |
| Efficiency | Up to 95% at 200 mA (VI = 3.7 V) - minimizes thermal rise in space-constrained SOT-23 packages. |
| Enable Threshold | VEN(H) ≥1.3 V, VEN(L) ≤0.4 V - compatible with standard GPIO logic levels for host control. |
Pinout & Package
TPS62202DBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with standard lead pitch and thermal pad omitted. Pin 1 is VI (input), Pin 2 is GND, Pin 3 is EN (enable), Pin 4 is FB (feedback), and Pin 5 is SW (switch node).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VI (Pin 1) | Input power supply | Accepts 2.5–6 V; requires 4.7 µF ceramic capacitor placed adjacent to minimize input ripple and EMI. |
| GND (Pin 2) | Power ground reference | Common return path for input/output currents; must be connected to low-impedance PCB ground plane. |
| EN (Pin 3) | Enable control input | Pull high to enable; pull low to enter 0.1 µA shutdown; must not float-requires external pull-up or MCU drive. |
| FB (Pin 4) | Feedback sense node | Internally tied to 1.8 V divider; no external resistors needed-simplifies layout vs. adjustable variants. |
| SW (Pin 5) | Switch node | Connects to inductor; carries high di/dt square wave-requires short, wide trace and Kelvin connection to minimize ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode-reduces conduction loss and improves efficiency above 50 mA. |
| Dynamic voltage positioning | Maintains output 0.8% above nominal during light load, providing headroom to absorb load transients without undershoot. |
| Soft-start circuitry | Staged 60/120/240/480 mA current ramp limits inrush-prevents input droop on weak battery sources. |
| 100% duty-cycle operation | Enables regulation down to VI = VO + IOUT × rDS(on)-extends usable battery range in Li-Ion applications. |
| Power save mode (PFM) | Reduces switching frequency and quiescent current to 15 µA at light loads-optimizes efficiency across full 0–300 mA range. |
Applications
| Smartphone Baseband Power | PDA Application Processor Supply |
|---|---|
Use Scenario: Powers baseband IC in GSM/WCDMA smartphones operating from single-cell Li-Ion battery (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary 1.8 V core supply for RF transceiver and modem subsystems requiring tight voltage tolerance and fast transient response. Use Value: Dynamic voltage positioning ensures <15 mV undershoot during 100 mA → 300 mA burst transitions, meeting 3GPP timing margin requirements. | Use Scenario: Supplies ARM9-based application processor in handheld PDA during active UI rendering and memory access. IC Role / Device Role / Timing Role: Fixed 1.8 V rail for CPU core and L1 cache-must sustain 250 mA peak with <2% output deviation under 50 µs load steps. Use Value: 1 MHz PWM + voltage-mode control achieves <10 µs recovery time from 50% load step, preventing processor clock stall. |
| Digital Camera Image Sensor Bias | Portable Media Player Audio Codec |
Use Scenario: Provides clean 1.8 V bias for CMOS image sensor in ultra-thin digital cameras powered by 3.7 V Li-Poly battery. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source for analog pixel readout circuitry-sensitive to switching artifacts. Use Value: 10 µF ceramic output capacitor yields <5 mVpp ripple in PWM mode and <18 mVpp in PFM mode-meets sensor SNR spec. | Use Scenario: Delivers 1.8 V to stereo audio codec in MP3 player during playback, with frequent sleep/wake cycles. IC Role / Device Role / Timing Role: Always-on supply enabling instant resume from deep sleep-requires ultra-low quiescent current and fast wake-up. Use Value: 15 µA quiescent current in PFM mode extends 200 mAh battery life by >12 hours versus non-synchronous alternatives. |
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 |
|---|---|---|---|
| TPS62201DBVR | Fixed 1.5 V output; identical package, pinout, and electrical specs except VOUT. | Used where system logic requires 1.5 V core voltage instead of 1.8 V-no change to PCB layout or BOM except part number. | Select when target SoC specifies 1.5 V core; verify compatibility with downstream level-shifters if interfacing with 1.8 V peripherals. |
| TPS62203DBVR | Fixed 3.3 V output; same SOT-23-5 footprint, enable function, and efficiency curve-but higher VOUT demands larger rDS(on) margin. | Applicable in legacy 3.3 V I/O domain supplies or mixed-voltage systems needing dual-rail generation. | Choose for 3.3 V FPGA I/O banks or interface ICs; confirm input voltage headroom (VI ≥ 3.6 V) for stable regulation. |
Compared with TPS62201DBVR and TPS62203DBVR, the TPS62202DBVR provides optimal voltage alignment for modern low-voltage DSPs and application processors requiring precisely 1.8 V, avoiding external resistor dividers or post-regulation losses associated with higher-output alternatives.
Availability
TPS62202DBVR is available at Aetrix Electronics and suitable for smartphone baseband power, PDA application processor supply, digital camera image sensor bias, and portable media player audio codec applications requiring stable component supply across production lifecycles.
Supply support for TPS62202DBVR 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6220x product line was engineered specifically for battery-powered portable electronics, emphasizing ultra-low quiescent current, small solution size, and seamless transition between PWM and PFM modes to maximize runtime.
FAQ
What is the recommended input capacitor for TPS62202DBVR?
The recommended input capacitor for TPS62202DBVR is a 4.7 µF X5R/X7R ceramic capacitor in 0805 case size (e.g., Taiyo Yuden JMK212BY475MG), placed directly adjacent to the VI and GND pins. This value provides sufficient bulk capacitance to suppress input ripple and transient spikes while maintaining stability across the 2.5–6 V input range. Larger values improve filtering but are not required for basic operation.
Does TPS62202DBVR require external feedback resistors?
No, TPS62202DBVR does not require external feedback resistors. As a fixed-output variant, it integrates an internal resistor divider calibrated for 1.8 V output-pin 4 (FB) is internally connected and must be left unconnected externally. This eliminates layout complexity and potential noise coupling issues associated with external resistor networks, simplifying design for high-volume portable products.
What is the shutdown current of TPS62202DBVR?
The shutdown current of TPS62202DBVR is 0.1 µA typical (maximum 1 µA) when the EN pin is pulled low. In this state, both P-channel and N-channel MOSFETs are fully off, the internal reference is disabled, and the device draws negligible current-making it suitable for long-duration battery-backed sleep modes in portable equipment where microamp-level leakage is critical.
Can TPS62202DBVR operate with a 2.5 V input?
Yes, TPS62202DBVR can operate with a 2.5 V input, enabled by its 100% duty-cycle capability. At light loads, it maintains 1.8 V output even when VI drops to 2.5 V-critical for extracting maximum energy from depleted Li-Ion cells. However, full 300 mA output is only guaranteed above 2.7 V per datasheet operating conditions; at 2.5 V, maximum sustainable load is ~220 mA due to increased rDS(on) of the P-channel switch.
How does TPS62202DBVR handle load transients?
TPS62202DBVR handles load transients via voltage-mode control with input feed-forward, achieving <10 µs recovery time from 50% load steps. Its dynamic voltage positioning raises output to 1.814 V at light loads, providing headroom that absorbs 100 mA → 300 mA transients with <15 mV undershoot-verified in TI's typical application testing using 10 µF ceramic output capacitance and 10 µH inductor.
TPS62202DBVR 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):
- 1.8V
- 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
TPS62202DBVR FAQ
1.How can I place an order for TPS62202DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62202DBVR 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 TPS62202DBVR reliable?
The price and inventory of TPS62202DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62202DBVR is usually 5 days.
3.What payment methods are accepted for TPS62202DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62202DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62202DBVR?
TPS62202DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62202DBVR 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 TPS62202DBVR?
For technical support, including TPS62202DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62202DBVR requirements.
6.How does Aetrix verify that TPS62202DBVR is sourced from the original manufacturer or authorized distributors?
All TPS62202DBVR 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 TPS62202DBVR meets industry standards.
7.What is the process for return or replacement of TPS62202DBVR?
All TPS62202DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62202DBVR, 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 TPS62202DBVR part is unused and in its original packaging.
Return procedure for TPS62202DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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