TLV62569ADRLR

Texas Instruments TLV62569ADRLR – 2‑A Forced‑PWM Synchronous Buck Converter in 6‑pin SOT‑563 (DRL)

The Texas Instruments TLV62569ADRLR is a compact, high‑efficiency, synchronous step‑down (buck) converter tailored for space‑constrained power rails in portable and embedded systems. Delivering up to 2 A of output current with forced‑PWM control, it maintains constant‑frequency operation for predictable EMI behavior and low‑ripple performance across the entire load range. Housed in TI’s 6‑pin SOT‑563 (DRL) package and operating from 2.5 V to 5.5 V inputs, the TLV62569ADRLR is a strong fit for point‑of‑load regulation from battery or 5‑V sources.

Why choose the TLV62569ADRLR?

• Brand and family you trust: Texas Instruments TLV6256x series
• 2‑A output capability to power modern MCUs, radios, sensors, and digital IC rails
• Forced‑PWM (FPWM) control for constant switching frequency and minimized low‑frequency ripple
• Integrated high‑side and low‑side MOSFETs for a simple, compact power stage
• Typical ~1.5 MHz switching frequency to shrink magnetics and capacitors
• Wide input range (2.5 V to 5.5 V) suitable for single‑cell Li‑ion, 5‑V USB, and regulated rails
• Adjustable output option with a typical 0.6 V reference; fixed‑voltage variants exist in the same family (verify ordering code)
• Internal soft start, enable/shutdown pin, and synchronous rectification to optimize performance
• Industrial temperature range (−40°C to +125°C ambient)
• 6‑pin SOT‑563 (DRL) package for dense layouts and high power density

Key specifications at a glance

• Manufacturer/Brand: Texas Instruments
• Series: TLV6256x
• Category: DC‑DC Switching Regulators (Buck)
• Function: Synchronous step‑down (buck) converter
• Control mode: Forced‑PWM (FPWM)
• Maximum output current: 2 A
• Input voltage range: 2.5 V to 5.5 V
• Switching frequency: ~1.5 MHz (typical)
• Output: Adjustable (typical reference ~0.6 V); fixed‑output options available in family
• Enable/Shutdown: Yes
• Synchronous rectification: Yes
• Soft start: Internal
• Operating temperature range: −40°C to +125°C (ambient)
• Package: SOT‑563, TI package code DRL, 6 pins
• Mounting type: Surface mount
• Packaging: Tape & Reel (TR)

Note: For absolute maximum ratings, specific output voltage ordering options, protection features, and detailed electrical limits, refer to the Texas Instruments datasheet.

How forced‑PWM benefits noise‑sensitive rails

Unlike PFM (pulse‑frequency modulation), which varies the switching frequency at light loads, the TLV62569ADRLR’s forced‑PWM architecture holds a constant frequency across the load range. This has practical benefits in systems where predictable EMI and low output ripple are critical:

• Easier filter design because the switching energy is concentrated at a known ~1.5 MHz fundamental and harmonics
• Reduced risk of beat‑notes with RF transceivers, audio paths, precision ADCs/DACs, and clock domains
• Consistent transient behavior and control loop dynamics from light to heavy load

The trade‑off versus PFM is that light‑load efficiency may be lower; however, for many industrial, IoT, and instrumentation rails, the repeatable spectral content and low‑ripple output of FPWM are preferred.

Applications

The TLV62569ADRLR is appropriate for a wide range of point‑of‑load and battery‑powered designs:

• Point‑of‑load regulation for MCUs, DSPs, low‑power FPGAs, and ASIC cores
• Battery‑powered/portable devices, including wearables and handhelds
• IoT end nodes, sensors, and wireless modules
• 5‑V to low‑voltage conversion for digital, analog, and mixed‑signal rails

Typical use cases include stepping 5 V to common rails such as 3.3 V, 2.5 V, 1.8 V, or lower (verify the ordering code and external resistor values for adjustable versions).

Package, layout, and board‑space considerations

The 6‑pin SOT‑563 (DRL) package minimizes footprint while enabling 2‑A delivery when paired with good PCB practices. To extract the best electrical and thermal performance:

• Place the input bypass capacitor as close as possible to the device VIN and GND pins to minimize the high‑di/dt loop area.
• Keep the switch node (SW) copper as compact as practical to limit radiated and conducted noise coupling.
• Route the feedback (FB) node away from the SW node and other noisy traces; use a short, direct connection to the output sense point.
• Provide a solid ground return with short connections; where possible, use a ground plane to reduce impedance.
• Use adequate copper area under and around the device for heat spreading, especially at higher load currents or elevated ambient temperatures.

Exact pin functions, recommended land pattern, and mechanical drawings are provided in the TI datasheet.

Design‑in guidance (inductor and capacitor selection)

Because the TLV62569ADRLR switches at a typical ~1.5 MHz, you can generally select small inductors and ceramic capacitors while hitting transient and ripple targets:

• Inductor: Choose a value and current rating that meet your ripple and transient objectives. Ensure the saturation current comfortably exceeds the maximum load current plus ripple current. DC resistance (DCR) trades off efficiency versus transient response.
• Output capacitors: Low‑ESR multi‑layer ceramic capacitors are commonly used. Select sufficient capacitance to meet output ripple and load‑transient requirements, accounting for derating.
• Input capacitors: Place one or more ceramics close to VIN/GND to handle pulsed input current and reduce noise injection into the source supply.
• Compensation: Follow datasheet guidance. The FPWM control simplifies loop design, and TI provides stability recommendations and component selection examples in the datasheet.

Always consult the Texas Instruments datasheet and application notes for recommended component values, design equations, and performance curves. Do not substitute values without verifying stability, ripple, and thermal limits.

Performance and protection notes

• Synchronous rectification enhances efficiency and reduces diode‑drop losses at higher loads.
• Internal soft start limits inrush current and helps prevent large startup overshoot.
• Enable/shutdown pin allows power sequencing and power‑saving when the rail is idle.

Any additional protections (for example, over‑current, thermal shutdown, under‑voltage lockout, or short‑circuit behavior) are not specified in the provided data. Refer to the datasheet for the complete protection feature set and limits.

Lifecycle, availability, and sourcing

• Lifecycle status: Active (per Texas Instruments)
• Series: TLV6256x
• Packaging: Tape & Reel (TR)
• Inventory quantity (this listing): 0 units

Procurement tips:

• If TLV62569ADRLR stock is constrained, consider planning safety stock and second‑source validation within the same TLV6256x family where appropriate.
• Verify the exact output‑voltage option and control mode in the ordering code; the “A” variant denotes forced‑PWM operation.
• For compliance and material declarations, leverage TI’s published documentation for AVL/AML approvals.

Compliance and environmental

• RoHS: RoHS compliant (lead‑free/Green)
• REACH: REACH compliant (per manufacturer)
• Operating temperature range: −40°C to +125°C (ambient)

Always consult official TI compliance documents for the most current substance and material content declarations.

Approved alternates and drop‑in considerations

• TLV62569BDRLR: Same TLV6256x family. Notable difference is light‑load operation (PFM). Confirm control mode, output‑voltage option (fixed vs adjustable), and pin compatibility before substitution.

Policy notes:

• Validate alternates for pin‑out, control scheme (FPWM vs PFM), switching frequency behavior, and output‑voltage options.
• Re‑characterize EMI, load transients, and efficiency if swapping FPWM ↔ PFM, as the light‑load spectral content and ripple behavior will change.

Specifications summary (for quick reference)

• MPN: TLV62569ADRLR
• Brand/Manufacturer: Texas Instruments
• Function: Synchronous buck converter
• Output current: Up to 2 A
• Input voltage: 2.5 V to 5.5 V
• Control: Forced‑PWM
• Frequency: ~1.5 MHz (typical)
• Output: Adjustable (typical reference ~0.6 V); fixed options available in family
• Enable: Yes
• Synchronous rectification: Yes
• Soft start: Internal
• Temperature: −40°C to +125°C (ambient)
• Package: SOT‑563 (DRL), 6 pins; Surface mount
• Packaging: Tape & Reel (TR)
• Lifecycle: Active
• RoHS/REACH: Compliant (per manufacturer)

Items not specified in the provided data (for example, PGOOD, current limit, UVLO thresholds, soft‑start timing, efficiency curves, or startup into pre‑biased loads) should be confirmed in the TI datasheet.

Frequently asked questions (FAQs)

• What differentiates the “A” variant of TLV62569?

• The TLV62569A operates in forced‑PWM mode for constant‑frequency operation across the load range, improving noise performance at light loads compared to PFM variants.

• Is the TLV62569ADRLR adjustable or fixed output?

• The TLV6256x family includes adjustable and fixed‑output options. Verify the exact ordering code for output configuration. The DRL package supports both types.

• Does the TLV62569ADRLR integrate the power MOSFETs?

• Yes. It integrates both high‑side and low‑side MOSFETs for a compact power stage.

• What input voltage range does it support?

• 2.5 V to 5.5 V.

• What is the typical switching frequency?

• Approximately 1.5 MHz (typical).

• Is there an enable/shutdown pin?

• Yes.

• What is the operating temperature range?

• −40°C to +125°C (ambient).

• Is it RoHS and REACH compliant?

• Yes, per the manufacturer’s compliance documentation.

• Does the device provide a power‑good output or start into a pre‑biased load?

• Not specified in the provided data. Consult the TI datasheet for these details.

Resources

• Datasheet: https://www.ti.com/lit/ds/symlink/tlv62569a.pdf
• Product page: https://www.ti.com/product/TLV62569A
• Compliance / Material content: https://www.ti.com/materialcontent/en/report?pc=TLV62569ADRLR

Summary

The Texas Instruments TLV62569ADRLR is a robust, space‑saving 2‑A synchronous buck converter designed for modern point‑of‑load rails in portable and embedded systems. Forced‑PWM control ensures constant‑frequency operation for predictable EMI and low ripple—ideal for noise‑sensitive analog, RF, and digital supplies. With a typical ~1.5 MHz switching frequency, an input range of 2.5 V to 5.5 V, integrated MOSFETs, internal soft start, and a tiny 6‑pin SOT‑563 (DRL) package, it streamlines power design without sacrificing performance. The device is active, RoHS/REACH compliant, and supported by a broad TI documentation set, making it a dependable choice for engineers and sourcing teams alike. Verify the exact ordering code for output configuration and consider the TLV62569BDRLR (PFM) sibling if maximizing light‑load efficiency is a priority.