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Texas Instruments TLV62568PDDCT
- Part No.:
- TLV62568PDDCT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TLV62568PDDCT.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:69,911
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Product details
Overview
TLV62568PDDCT from Texas Instruments is a 1-A synchronous step-down DC-DC converter in SOT-563 package, featuring 1.5-MHz fixed-frequency PWM operation, Power Save Mode for light-load efficiency, and integrated power-good (PG) output. It delivers regulated 1.8 V at 1 A from 2.5–5.5 V input, with 0.6-V to VIN adjustable output via external resistor divider, used in compact point-of-load supplies for embedded imaging and networking devices.
For engineers reviewing the TLV62568PDDCT datasheet, TLV62568PDDCT pinout, TLV62568PDDCT application, or TLV62568PDDCT equivalent, key selection criteria include its 95% peak efficiency at 1 A, 35-µA quiescent current, 100% duty-cycle low-dropout capability, thermal shutdown protection, and PG open-drain signaling for rail sequencing in multi-rail systems.
Technical Context
The TLV62568PDDCT employs adaptive off-time peak-current control with fixed 1.5-MHz switching frequency under medium-to-heavy loads and automatically transitions to Power Save Mode at light loads to sustain high efficiency across 1 mA–1 A output range. Its internal soft-start limits inrush current during startup, and it supports pre-biased output capacitor start-up.
It integrates complementary MOSFETs with 150 mΩ high-side and 100 mΩ low-side RDS(on), enabling efficient 1-A operation with minimal external components. The PG pin provides open-drain status signaling referenced to 95% (rising) and 90% (falling) of nominal VFB, requiring an external pull-up ≤5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1 A continuous - supports full-rated load without derating at TJ ≤125°C with proper PCB thermal design. |
| Input Voltage Range | 2.5 V to 5.5 V - compatible with single-cell Li-ion, USB, and 3.3-V/5-V rails. |
| Switching Frequency | 1.5 MHz - enables use of small 2.2-µH inductors and ceramic capacitors for compact footprint. |
| Peak Efficiency | 95% at 1 A, 5-V input, 1.8-V output - minimizes thermal stress and extends battery life in portable applications. |
| Quiescent Current | 35 µA - maintains ultra-low standby power in always-on subsystems. |
| Feedback Voltage | 0.6 V ±2% - sets precise output regulation via external resistor divider; enables 0.6–VIN adjustable output. |
| Power Good Threshold | 95% VFB (rising), 90% VFB (falling) - provides accurate rail-valid signaling for safe power sequencing. |
| Thermal Shutdown | 150°C rising / 130°C falling - protects against sustained overload or poor heatsinking without latch-off. |
Pinout & Package
SOT-563 (6-pin) package: 1.60 mm × 1.60 mm body, 0.5-mm pitch, thermally enhanced bottom-side pad. Pin 1 = FB, Pin 2 = GND, Pin 3 = VIN, Pin 4 = SW, Pin 5 = EN, Pin 6 = PG.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Connects to resistor divider midpoint; regulates output by comparing to 0.6-V internal reference. |
| GND (Pin 2) | Power ground | Main return path for high-current SW and VIN loops; must be low-impedance connection to PCB ground plane. |
| VIN (Pin 3) | Input supply | Accepts 2.5–5.5 V; requires local 4.7-µF ceramic decoupling placed adjacent to this pin. |
| SW (Pin 4) | Switch node | Drives external inductor; carries high di/dt; must be routed short and wide to minimize EMI and voltage spikes. |
| EN (Pin 5) | Enable logic input | Active-high; 0.95–1.2 V threshold; pulls device into <2-µA shutdown when low; must not float. |
| PG (Pin 6) | Power good open drain | Signals VOUT valid (high-Z) or fault (low); requires external pull-up ≤5.5 V; sinks up to 1 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode | Automatically reduces switching frequency below ~100 mA load to maintain >85% efficiency at 1 mA. |
| 100% Duty Cycle Operation | Enables dropout as low as IOUT × (150 mΩ + inductor DCR); sustains regulation even when VIN ≈ VOUT. |
| Integrated Soft Start | 900-µs ramp time prevents inrush current; eliminates need for external timing capacitor. |
| Overcurrent Protection | Peak-switch-current limit at 1.5 A; non-latching, self-recovering during overload or short-circuit events. |
| Thermal Robustness | RθJB = 31.1°C/W - achieves 1-A operation with minimal PCB copper area due to low junction-to-board resistance. |
Applications
| Network Video Camera | Wireless Router |
|---|---|
Use Scenario: Powering image sensor, ISP, and Wi-Fi SoC core rails in space-constrained outdoor IP cameras. IC Role / Device Role: Primary 1.8-V POL regulator delivering 1 A to processor core with fast transient response. Use Value: 95% efficiency at full load reduces thermal load in sealed enclosures; PG signal sequences sensor power after SoC initialization. |
Use Scenario: Generating stable 1.8-V and 3.3-V rails for dual-band Wi-Fi 6 baseband and RF front-end ICs. IC Role / Device Role: Secondary buck converter for low-noise digital core supply, synchronized via EN/PG handshaking. Use Value: 35-µA quiescent current extends standby battery life; Power Save Mode maintains >90% efficiency at idle traffic loads. |
| Set Top Box | Industrial HMI Display |
Use Scenario: Supplying 1.2-V or 1.8-V logic rails to ARM-based media processors in consumer STBs. IC Role / Device Role: Compact, cost-optimized buck converter replacing discrete solutions on dense 4-layer boards. Use Value: SOT-563 footprint saves >40% board area vs. SOIC; 1.5-MHz switching avoids audible noise in living-room environments. |
Use Scenario: Providing regulated 1.8-V supply to touch controller and display interface ASIC in factory-floor HMIs. IC Role / Device Role: Robust POL regulator operating across -40°C to +85°C ambient with thermal shutdown recovery. Use Value: 150°C thermal shutdown with 20°C hysteresis prevents lockup during transient overloads; PG confirms rail stability before GUI boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV62569PDDCT | Same SOT-563 package, identical pinout, but rated for 2 A output and higher RDS(on) (120 mΩ/80 mΩ). | Supports higher-current rails (e.g., DDR memory termination) where 2-A headroom is required. | Select TLV62569PDDCT only if >1 A output or lower dropout at 1.5 A is needed; otherwise TLV62568PDDCT offers better light-load efficiency. |
| TPS62865RQYR | 2.5-V to 5.5-V input, 1-A, 2.5-MHz, 18-VOUT max, but no PG output and uses 1.2-mm × 0.8-mm WSON. | Lacks PG signaling and has smaller package; suited for ultra-compact designs where rail sequencing is handled externally. | Choose TPS62865RQYR when board area is critical and PG is unnecessary; TLV62568PDDCT remains preferred for sequenced multi-rail systems. |
Compared with TLV62568PDDCT, TLV62569PDDCT trades light-load efficiency for higher current capability, while TPS62865RQYR sacrifices PG functionality and thermal robustness for minimal footprint-making TLV62568PDDCT optimal for balanced performance, reliability, and system-level control in industrial and networking POL applications.
Availability
TLV62568PDDCT is available at Aetrix Electronics and suitable for network video camera, wireless router, and set-top box designs requiring stable component supply, long-term production continuity, and automotive-grade reliability screening.
Supply support for TLV62568PDDCT 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 technologies, with decades of expertise in high-efficiency DC-DC conversion.
The TLV62568PDDCT belongs to TI's TLV6256x family of compact synchronous buck converters designed specifically for space-constrained, battery-sensitive, and thermally demanding point-of-load applications in consumer, industrial, and networking equipment.
FAQ
What is the maximum output current rating of the TLV62568PDDCT?
The TLV62568PDDCT is rated for continuous 1-A output current under recommended operating conditions (TJ ≤125°C, proper PCB thermal design). Its internal current limit is 1.5 A, providing margin for transient surges. Derating applies above 85°C ambient; full 1-A operation is confirmed with ≥200 mm² of 2-oz copper connected to the exposed thermal pad in SOT-563.
Does the TLV62568PDDCT support adjustable output voltage?
Yes, the TLV62568PDDCT supports adjustable output voltage from 0.6 V to VIN using an external resistor divider connected to the FB pin. With a 0.6-V internal reference, typical configurations use R1 = 200 kΩ and R2 = 100 kΩ for 1.8-V output. R2 should not exceed 200 kΩ to balance noise immunity and quiescent current.
What is the function of the PG pin on the TLV62568PDDCT?
The PG (Power Good) pin on the TLV62568PDDCT is an open-drain output that signals valid regulation: it goes high-impedance when VFB ≥95% of nominal (e.g., 0.57 V for 1.8-V output) and pulls low when VFB ≤90%. It requires an external pull-up resistor ≤5.5 V and sinks up to 1 mA, enabling rail sequencing in multi-converter systems.
How does Power Save Mode operate in the TLV62568PDDCT?
In Power Save Mode, the TLV62568PDDCT reduces switching frequency and skips pulses at light loads (<100 mA), maintaining >85% efficiency down to 1 mA. This mode minimizes quiescent current and improves battery runtime. Output voltage may rise slightly above nominal; adding extra output capacitance suppresses this effect.
Can the TLV62568PDDCT start up into a pre-biased output capacitor?
Yes, the TLV62568PDDCT supports pre-biased start-up: when enabled, it senses the existing output voltage and ramps toward the target without forcing reverse current into the output capacitor. This prevents damage to downstream circuitry and ensures reliable boot in systems with multiple powered rails.
TLV62568PDDCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TLV62568PDDCT FAQ
1.How can I place an order for TLV62568PDDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV62568PDDCT 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 TLV62568PDDCT reliable?
The price and inventory of TLV62568PDDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV62568PDDCT is usually 5 days.
3.What payment methods are accepted for TLV62568PDDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV62568PDDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV62568PDDCT?
TLV62568PDDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV62568PDDCT 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 TLV62568PDDCT?
For technical support, including TLV62568PDDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV62568PDDCT requirements.
6.How does Aetrix verify that TLV62568PDDCT is sourced from the original manufacturer or authorized distributors?
All TLV62568PDDCT 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 TLV62568PDDCT meets industry standards.
7.What is the process for return or replacement of TLV62568PDDCT?
All TLV62568PDDCT units undergo pre-shipment inspection (PSI). If there is an issue with TLV62568PDDCT, 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 TLV62568PDDCT part is unused and in its original packaging.
Return procedure for TLV62568PDDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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