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Texas Instruments TPS61202DSCR
- Part No.:
- TPS61202DSCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS61202DSCR.pdf
- Description:
- IC REG BOOST 5V 1.2A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,253
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Product details
Overview
TPS61202DSCR from Texas Instruments is a fixed-output 5-V synchronous boost converter IC designed for low-input-voltage battery-powered systems. It delivers up to 600 mA output current at 5 V with ≥3 V input, supports 0.3–5.5 V input range, integrates 1.3-A internal switches, and operates in automatic boost/down-conversion mode for seamless regulation across input/output voltage crossovers - used in single-cell Li-ion portable medical devices and fuel-cell-powered sensors.
For engineers reviewing the TPS61202DSCR datasheet, TPS61202DSCR pinout, TPS61202DSCR application, or TPS61202DSCR equivalent, key selection criteria include its 5-V fixed output, 1250–1650 kHz switching frequency, <55 μA quiescent current, Power Save mode control via PS pin, and thermal shutdown protection at 140°C - all critical for ultra-low-power, space-constrained battery management designs.
Technical Context
The TPS61202DSCR implements an average-current-mode PWM controller with input/output voltage feedforward for fast transient response. Its three-NMOS synchronous topology enables high efficiency across wide load ranges while maintaining strict output regulation during input voltage crossovers into down-conversion mode.
It features dual ground separation (GND for logic, PGND for power), programmable UVLO via external resistor divider on UVLO pin, soft-start with VAUX precharge, and short-circuit protection that dynamically reduces current limit under fault conditions - all operating within –40°C to 85°C ambient temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.95–5.05 V - ensures stable 5-V rail for USB-peripheral interfaces and microcontroller I/O without external feedback resistors. |
| Input Voltage Range | 0.3 V to 5.5 V - supports startup from depleted single-cell alkaline (0.5 V) or Li-ion (2.6 V) batteries. |
| Switch Current Limit | 1200–1500 mA average - limits peak inductor current to protect internal MOSFETs during surge loads or short transients. |
| Quiescent Current | <55 μA - minimizes battery drain in standby, enabling multi-month operation in always-on sensor nodes. |
| Switching Frequency | 1250–1650 kHz - allows use of compact 1–2.2 μH inductors and reduces output ripple without compromising efficiency. |
| Thermal Shutdown | 140°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| UVLO Threshold | Falling: 235–265 mV; Rising: 330–370 mV - enables precise battery end-of-life detection when monitoring cell voltage via resistor divider. |
Pinout & Package
TPS61202DSCR is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with exposed thermal pad soldered to PGND for optimal heat dissipation and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 0.3–5.5 V source; connects to battery or energy harvester; decoupled with 10 μF ceramic capacitor. |
| EN | Enable control input | Active-high logic enable; must be pulled high (>1.2 V) to activate regulator; floating state disables device. |
| UVLO | Undervoltage lockout monitor | Connects to resistor divider from VIN to detect battery depletion; threshold set by external ratio. |
| PS | Power Save mode control | Low = enable variable-frequency light-load mode; High = force fixed 1.25–1.65 MHz operation. |
| GND | Logic ground reference | Reference for EN, PS, UVLO, FB; must connect to PGND at single point near GND pin to avoid noise coupling. |
| PGND | Power ground return | Return path for 1.3-A switch currents; connects to thermal pad and inductor ground; separate from GND. |
| FB | Feedback input | Internally tied to VOUT for fixed 5-V operation; no external resistor divider required. |
| VAUX | Auxiliary supply output | Provides ~2.4–5.5 V bias for internal control circuitry; requires 1-μF ceramic capacitor to GND. |
| VOUT | Regulated output | Delivers up to 600 mA at 4.95–5.05 V; connects to load and output capacitor (10–22 μF ceramic). |
| L | Inductor connection | Drives external 1–2.2 μH shielded inductor; high di/dt node requiring short, wide PCB trace to PGND. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic boost/down-conversion mode | Seamlessly transitions between boost and buck-like regulation when VIN ≥ VOUT, eliminating need for external LDO in hybrid battery systems. |
| Synchronous 3-switch topology | Uses three integrated N-channel MOSFETs to eliminate external rectifier diode, achieving >90% efficiency at 300 mA/3.3 V and 600 mA/5 V. |
| Load disconnect during shutdown | Completely isolates VOUT from VIN when EN = low, preventing reverse current and enabling true zero-quiescent-power system sleep states. |
| Startup into full load at 0.5 V input | Enables reliable cold-start from deeply discharged cells without external charge-pump assist circuits. |
| Overtemperature protection with hysteresis | Shuts down at 140°C junction temperature and resumes only after cooling to ≤120°C, avoiding thermal oscillation in enclosed enclosures. |
Applications
| Portable Medical Sensors | Single-Cell Li-ion Audio Players |
|---|---|
Use Scenario: Wearable glucose monitor powered by CR2032 coin cell with intermittent Bluetooth LE transmission. IC Role / Device Role / Timing Role: Primary 5-V power rail generator enabling MCU, sensor ADC, and BLE radio operation from 2.0–3.0 V input. Use Value: Delivers 500 mA peak current at 5 V with <55 μA quiescent draw, extending battery life beyond 6 months between replacements. |
Use Scenario: Miniature MP3 player using single 3.7-V Li-ion cell with 5-V USB charging and DAC interface. IC Role / Device Role / Timing Role: Synchronous boost converter supplying stable 5-V rail to audio codec and USB PHY during playback and charging. Use Value: Maintains ±1% output regulation across 2.8–4.2 V input range and supports automatic down-conversion when cell voltage exceeds 5 V during charging. |
| Fuel Cell IoT Nodes | White LED Backlight Drivers |
Use Scenario: Remote environmental sensor node powered by methanol fuel cell with highly variable 0.4–2.5 V output. IC Role / Device Role / Timing Role: Low-input-voltage DC-DC converter generating regulated 5-V system rail for MCU and LoRaWAN transceiver. Use Value: Starts reliably at 0.5 V input and sustains 300 mA output with >85% efficiency across entire fuel cell voltage range. |
Use Scenario: Compact handheld scanner with 4-series white LEDs requiring 12–16 V forward voltage from 3.3-V logic rail. IC Role / Device Role / Timing Role: Boost stage feeding constant-current LED driver IC; provides clean 5-V bias for driver control logic. Use Value: Enables compact layout with integrated 1.3-A switches and eliminates external Schottky diode, reducing BOM count and footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61201DSCR | Fixed 3.3-V output; identical package, pinout, and control features. | Targeted at 3.3-V MCU and peripheral rails instead of 5-V USB or logic interfaces. | Select when system requires 3.3 V rather than 5 V - no layout change needed, but output capacitor and load must match 3.3-V tolerance. |
| MAX17062ETA+ | Fixed 5-V output; 2-MHz switching; 1.2-A switch; requires external compensation; different pinout. | Higher frequency enables smaller magnetics but lacks automatic down-conversion and has higher quiescent current (85 μA). | Choose for space-constrained designs needing >2-MHz operation; verify thermal performance and rework layout due to non-pin-compatible footprint. |
Compared with TPS61202DSCR, TPS61201DSCR offers identical functionality at 3.3 V for lower-voltage logic domains, while MAX17062ETA+ trades down-conversion capability and ultra-low IQ for higher switching frequency and marginally higher current - making TPS61202DSCR optimal for battery longevity and input voltage crossover resilience.
Availability
TPS61202DSCR is available at Aetrix Electronics and suitable for portable medical sensors, fuel-cell-powered IoT nodes, and single-cell Li-ion audio players requiring stable component supply with guaranteed long-term manufacturability and consistent electrical specifications.
Supply support for TPS61202DSCR 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 TPS6120x product line was engineered specifically for ultra-low-input-voltage battery-powered applications - delivering high-efficiency synchronous boost conversion with integrated protection and seamless transition into down-conversion mode for extended battery utilization.
FAQ
What is the exact output voltage tolerance of the TPS61202DSCR?
The TPS61202DSCR provides a factory-trimmed fixed output voltage of 5.0 V with a tolerance of ±1%, specified as 4.95 V to 5.05 V under recommended operating conditions. This tight regulation is achieved using an internal precision voltage reference and feedback divider, eliminating the need for external resistors and ensuring consistent 5-V rail accuracy across temperature and load variations in the TPS61202DSCR.
Does the TPS61202DSCR support automatic transition between boost and down-conversion modes?
Yes, the TPS61202DSCR automatically enters down-conversion mode when the input voltage reaches or exceeds the 5-V output voltage - for example, during Li-ion battery charging above 4.2 V. In this mode, it regulates output by controlling voltage drop across internal synchronous rectifiers, maintaining stable 5-V output without external components. This behavior is intrinsic to the TPS61202DSCR's control architecture and requires no configuration.
How does the PS pin function on the TPS61202DSCR?
The PS pin on the TPS61202DSCR controls Power Save mode: pulling PS low enables variable-frequency operation at light loads to maximize efficiency, while pulling PS high forces fixed-frequency PWM operation (1250–1650 kHz). During down-conversion mode, Power Save is always active regardless of PS state. This dual-mode flexibility makes the TPS61202DSCR adaptable to both burst-mode-sensitive and EMI-critical applications.
What thermal management considerations apply to the TPS61202DSCR?
The TPS61202DSCR uses a VSON-10 package with an exposed thermal pad that must be soldered to a PGND copper plane for effective heat dissipation. Its junction-to-board thermal resistance is 15.4°C/W, and thermal shutdown activates at 140°C with 20°C hysteresis. To maintain reliability, PCB layout must minimize thermal resistance from the pad to internal ground planes, especially under 600-mA continuous load - a key requirement for robust TPS61202DSCR deployment.
Can the TPS61202DSCR start up from a 0.5-V input source?
Yes, the TPS61202DSCR guarantees startup into full load at 0.5 V input voltage - a critical feature for applications using exhausted alkaline or NiMH cells. Internal charge pump circuitry first charges the VAUX rail to ~2.5 V before enabling VOUT, allowing controlled ramp-up even with large output capacitors. This cold-start capability is fully characterized and guaranteed across temperature for the TPS61202DSCR, distinguishing it from many competing boost converters.
TPS61202DSCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN 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):
- 5V
- 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-WSON (3x3)
TPS61202DSCR FAQ
1.How can I place an order for TPS61202DSCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61202DSCR 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 TPS61202DSCR reliable?
The price and inventory of TPS61202DSCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61202DSCR is usually 5 days.
3.What payment methods are accepted for TPS61202DSCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61202DSCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61202DSCR?
TPS61202DSCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61202DSCR 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 TPS61202DSCR?
For technical support, including TPS61202DSCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61202DSCR requirements.
6.How does Aetrix verify that TPS61202DSCR is sourced from the original manufacturer or authorized distributors?
All TPS61202DSCR 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 TPS61202DSCR meets industry standards.
7.What is the process for return or replacement of TPS61202DSCR?
All TPS61202DSCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61202DSCR, 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 TPS61202DSCR part is unused and in its original packaging.
Return procedure for TPS61202DSCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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