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Texas Instruments TLV61224DCKR
- Part No.:
- TLV61224DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
TLV61224DCKR.pdf
- Description:
- IC REG BOOST 3V 160MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
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Product details
Overview
TLV61224DCKR from Texas Instruments is a synchronous step-up DC-DC converter optimized for single-cell battery systems, delivering a fixed 3-V output from input voltages as low as 0.7 V, with up to 94% efficiency at typical loads, 5-μA quiescent current, and 400-mA switch current rating. It enables compact power management in ultra-low-power portable devices such as hearing aids and glucose meters.
For engineers reviewing the TLV61224DCKR datasheet, TLV61224DCKR pinout, TLV61224DCKR application, or TLV61224DCKR equivalent, key selection criteria include minimum startup voltage (0.7 V), pass-through behavior during shutdown, integrated overvoltage/overtemperature protection, and SC-70 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV61224DCKR employs a hysteretic current-mode control architecture that maintains constant 200-mA inductor ripple current and dynamically adjusts offset based on load to sustain high efficiency across light-to-moderate loads. Its synchronous rectification uses two internal MOSFETs - main switch (RDS(on) = 600 mΩ) and rectifying switch (RDS(on) = 1000 mΩ) - eliminating external diode losses.
Startup begins via an internal oscillator when VIN < 1.8 V, transitioning to normal hysteretic operation once VOUT reaches ~1.8 V. Undervoltage lockout (500 mV threshold, 50 mV hysteresis), overvoltage protection (5.5–7.5 V), and thermal shutdown (140 °C, 20 °C hysteresis) ensure robust system-level protection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±5% (2.85–3.15 V); eliminates need for external feedback resistors. |
| Input Voltage Range | 0.7 V to 3.0 V; supports single-cell alkaline/NiMH (0.9–1.5 V) and Li-primary (2.0–3.0 V) batteries. |
| Quiescent Current | 5 μA typical; enables >1-year battery life in always-on sensor nodes drawing <10 μA average. |
| Switch Current Limit | 400 mA typical; supports ≥40 mA output at 1.2-V input with 3-V output (VIN/VOUT = 0.4). |
| Efficiency | Up to 94% at 10–50 mA loads; minimizes thermal rise and extends runtime in sealed enclosures. |
| Shutdown Current | 0.2–1.0 μA; reduces battery drain to negligible levels during device sleep modes. |
| Package | 6-pin SC-70 (2.0 mm × 1.25 mm); enables <4 mm² total solution size with 4.7-μH inductor and dual 10-μF ceramics. |
Pinout & Package
TLV61224DCKR is housed in a 6-pin SC-70 (DCK) package with 0.65-mm pitch, measuring 2.00 mm × 1.25 mm × 0.95 mm (max height). The package is RoHS-compliant, lead-free (NiPdAu), and rated MSL Level-1 (unlimited floor life at ≤30 °C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply connection | Accepts 0.7–3.0 V; connects to battery anode or upstream source; requires local 10-μF ceramic bypass. |
| L | Inductor connection node | Drives external 4.7-μH inductor; carries peak switch current up to 400 mA; must be routed with short, wide trace. |
| GND | Power and control ground reference | Common return for VIN, VOUT, EN, FB; requires dedicated low-impedance plane under IC footprint. |
| VOUT | Regulated output voltage node | Delivers fixed 3.0 V; supplies downstream logic/sensors; requires local 10-μF ceramic output capacitor. |
| FB | Feedback sense input | Internally connected to VOUT; must be shorted directly to VOUT pin - no external divider or filtering. |
| EN | Enable control input | Active-high logic interface (VIH ≥ 0.8×VIN or ≥1.2 V); pulls down to GND to disable and reduce IQ to sub-μA. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost topology | Eliminates external Schottky diode; reduces conduction loss by >30% vs. asynchronous designs at 10–30 mA loads. |
| Pass-through function during shutdown | Enables seamless backup path: when EN = low, VOUT ≈ VIN (via body diode), preserving partial system operation. |
| Hysteretic current-mode control | Provides inherent stability without compensation network; enables fast transient response (<2 ms recovery from 10–30 mA load step). |
| Integrated protection suite | Combines UVLO (500 mV), OVP (5.5–7.5 V), and OTP (140 °C) - no external fault monitoring circuitry required. |
| Ultra-low quiescent current | 5 μA operation enables direct connection to primary lithium cells (e.g., CR2032) without significant shelf-life degradation. |
Applications
| Wearable Medical Sensors | Low-Power IoT End Nodes |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and analog front-end requiring stable 3-V rail. IC Role / Device Role / Timing Role: Primary voltage booster supplying ADC, op-amps, and BLE radio transceiver from single CR2032 (2.0–3.0 V). Use Value: 94% efficiency at 15 mA extends battery life beyond 6 months; 5-μA IQ prevents measurable discharge during 8-hour sleep cycles. |
Use Scenario: Wireless temperature/humidity sensor node powered by AA alkaline battery with 10-year target lifetime. IC Role / Device Role / Timing Role: Step-up regulator enabling 3-V MCU and RF IC operation down to 0.9-V cell voltage (end-of-life). Use Value: 0.7-V startup ensures full functionality until battery depletion; shutdown current <1 μA preserves energy during 99.9% duty-cycled sleep. |
| Personal Care Devices | Portable Diagnostic Tools |
Use Scenario: Rechargeable electric toothbrush with NiMH battery pack (1.0–1.4 V per cell) powering motor driver and LED indicators. IC Role / Device Role / Timing Role: Fixed-output boost converter generating 3-V logic rail independent of battery state-of-charge. Use Value: Pass-through mode during EN=low allows microcontroller to retain real-time clock while motor is inactive - zero standby power penalty. |
Use Scenario: Handheld pulse oximeter using disposable alkaline cells and analog signal chain requiring noise-immune 3-V supply. IC Role / Device Role / Timing Role: Low-noise, high-efficiency power source for photodiode amplifier and ADC reference. Use Value: SC-70 footprint and minimal external parts (1 inductor, 2 capacitors) enable <12 mm² total BOM area - critical for pen-sized form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | Adjustable output (0.9–5.5 V); higher 1.2-A switch current; 2.5-μA IQ; 3-mm × 3-mm SON-8 package. | Requires external feedback resistors; better suited for multi-rail systems needing programmable outputs. | Choose TPS61200DRCT when output voltage flexibility or >40 mA continuous load is required. |
| MAX17222ETA+ | Fixed 3.3-V output; 1.3-μA IQ; 0.65-V min input; 1.5-mm × 1.5-mm WLP-6 package; no OVP/OTP. | Smaller footprint but lacks integrated overvoltage/overtemperature protection - needs external supervision. | Choose MAX17222ETA+ only if board space is paramount and protection is handled elsewhere in design. |
Compared with TPS61200DRCT and MAX17222ETA+, the TLV61224DCKR offers optimal balance of ultra-low IQ, integrated protection, fixed 3-V output simplicity, and SC-70 size - making it ideal for cost-sensitive, space-constrained, single-rail medical and consumer devices where reliability and battery longevity are critical.
Availability
TLV61224DCKR is available at Aetrix Electronics and suitable for wearable medical sensors, low-power IoT end nodes, personal care devices, and portable diagnostic tools requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TLV61224DCKR 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 connectivity technologies, with over 50 years of innovation in power management ICs.
The TLV61224DCKR belongs to TI's low-voltage boost converter product line, engineered specifically for energy-constrained battery-powered applications where startup voltage, quiescent current, and protection integration determine system viability.
FAQ
What is the minimum input voltage required for TLV61224DCKR to start switching?
The TLV61224DCKR has a guaranteed startup voltage of 0.7 V under recommended operating conditions. At input voltages below this threshold, the device remains in UVLO state and will not initiate switching - ensuring reliable operation even as single-cell alkaline batteries deplete to end-of-life voltage.
Does TLV61224DCKR require external feedback resistors to set its output voltage?
No. The TLV61224DCKR features a factory-trimmed internal resistor divider that fixes the output voltage at 3.0 V. The FB pin must be connected directly to VOUT with no external components - simplifying layout and eliminating resistor tolerance errors that affect regulation accuracy.
How does TLV61224DCKR behave when the EN pin is pulled low?
When EN is pulled low, the TLV61224DCKR enters shutdown mode: switching ceases, control circuitry powers down, and quiescent current drops to 0.2–1.0 μA. Crucially, the body diode of the internal rectifying MOSFET remains forward-biased, allowing VOUT to follow VIN (pass-through function) - preserving partial system functionality without additional diodes.
Can TLV61224DCKR drive a 50-mA load from a 1.0-V input?
No - the TLV61224DCKR's maximum sustainable output current decreases as input voltage drops. At 1.0-V input, the theoretical maximum output current into 3-V load is limited to approximately 25 mA due to power conservation (PIN ≈ POUT/η). For 50-mA loads, VIN should be ≥1.2 V per datasheet characterization.
What thermal derating applies to TLV61224DCKR in a standard 2-layer PCB layout?
With the TLV61224DCKR mounted on a standard 2-layer PCB (1 oz Cu, 100 mm² exposed pad area), the junction-to-ambient thermal resistance is 231.9 °C/W. At 85 °C ambient and 125 °C max junction temperature, the allowable power dissipation is ~173 mW - sufficient for ≤40 mA output at 1.2-V input assuming 90% efficiency.
TLV61224DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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):
- 0.7V
- Voltage - Input (Max):
- 3V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 160mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
TLV61224DCKR FAQ
1.How can I place an order for TLV61224DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV61224DCKR 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 TLV61224DCKR reliable?
The price and inventory of TLV61224DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV61224DCKR is usually 5 days.
3.What payment methods are accepted for TLV61224DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV61224DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV61224DCKR?
TLV61224DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV61224DCKR 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 TLV61224DCKR?
For technical support, including TLV61224DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV61224DCKR requirements.
6.How does Aetrix verify that TLV61224DCKR is sourced from the original manufacturer or authorized distributors?
All TLV61224DCKR 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 TLV61224DCKR meets industry standards.
7.What is the process for return or replacement of TLV61224DCKR?
All TLV61224DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV61224DCKR, 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 TLV61224DCKR part is unused and in its original packaging.
Return procedure for TLV61224DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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