Analog Devices

LT1076CQ#PBF - 2A Buck/Boost/Flyback Regulator | Analog Devices

Name: LT1076CQ#PBF
Brand: Analog Devices
Price: 4.45 USD
Availability: InStock

MPN: LT1076CQ#PBF ✓ Active

In Stock Ships in 1-3 business days

2.5 V to 50 V Vdss 2 A (Switch) Id TO-263-6 (D2PAK, 5 Leads + Tab) Package 100 kHz Speed

From $4.45 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

Qty	Unit Price	Extended
1	$6.79	$6.79
10	$6.1	$61.00
100	$5.5	$550.00
500	$4.95	$2,475.00
1,000	$4.45	$4,450.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for LT1076CQ#PBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

LT1076CQ-5#PBF

✅ Drop-In

📦 TO-263-6 (D2PAK)

Fixed 5V output version, same package and pinout

📋 Reference alternative (not in catalog)

LT1074CQ#PBF

✅ Drop-In

📦 TO-263-6 (D2PAK)

5A switch current version, same package and pinout

📋 Reference alternative (not in catalog)

LT1076CQ#TR

✅ Drop-In

📦 TO-263-6 (D2PAK)

Tape-and-reel packaging variant, same electrical specs

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

LT1076CQ#PBF Maximum Ratings & Electrical Characteristics

Function	Step-Down (Buck), Step-Up (Boost), Inverting, Flyback
Output Type	Adjustable
Output Voltage Range	2.5 V to 50 V
Output Current	2 A (Switch)
Input Voltage Range	Up to 60 V
Switching Frequency	100 kHz
PWM Type	Current Mode
Synchronous Rectifier	No
Number of Outputs	1
Package	TO-263-6 (D2PAK, 5 Leads + Tab)
Mounting Type	Surface Mount
Operating Temperature Range	[DATA_NEEDED: Operating Temperature Range]
Quiescent Current	[DATA_NEEDED: Quiescent Current]
RoHS Status	Compliant
Lead Free	Yes

LT1076CQ#PBF Pin Configuration

Pin 1	VSW — Switch output
Pin 2	VIN — Input supply
Pin 3	GND — Ground
Pin 4	FB — Feedback
Pin 5	SHDN — Shutdown
Pin TAB	GND — Ground (thermal pad)

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

LT1076CQ#PBF is suitable for 6 applications: Industrial Power Supplies, Battery Chargers, Automotive Electronics, Distributed Power Systems, Telecom Equipment, LED Lighting Drivers.

🏭

Industrial Power Supplies

The LT1076CQ#PBF is ideal for industrial power supplies due to its wide input voltage range up to 60V and ability to step down high voltages efficiently. Its 2A switch current can power sensors, actuators, and control logic. The current-mode control ensures stable operation under varying loads, which is common in industrial environments. The device's robust bipolar design handles transients and provides reliable performance in harsh conditions.

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Battery Chargers

The LT1076CQ#PBF can be configured as a buck converter for battery charging applications. Its adjustable output voltage from 2.5V to 50V allows it to charge various battery chemistries, including lead-acid and lithium-ion. The 100kHz switching frequency enables the use of small inductors, making the charger compact. The device's current-mode control provides accurate current limiting, essential for safe charging. Thermal shutdown protects the circuit during prolonged charging.

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AD8210YRZ · Analog Devices REF192ESZ · Analog Devices

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Automotive Electronics

In automotive applications, the LT1076CQ#PBF handles input voltages up to 60V, accommodating load-dump transients. It can step down the 12V battery rail to power microcontrollers, sensors, and infotainment systems. The device's high efficiency reduces heat dissipation in the engine compartment. Its robust bipolar construction withstands temperature extremes. The TO-263 package with exposed tab aids thermal management when mounted on a heatsink.

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AD8412AWBRZ · Analog Devices LTC3882-1 · Analog Devices

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Distributed Power Systems

The LT1076CQ#PBF is suitable for distributed power architectures where multiple voltage rails are generated from a common bus. Its ability to step up, step down, or invert makes it flexible for generating positive and negative supplies. The 2A switch current can power local loads, reducing the need for centralized converters. The device's current-mode control simplifies loop compensation, easing design. Its wide input range allows it to operate from various bus voltages.

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ADM7150ARDZ (Low-noise LDO for post-regulation) LTM4644IY#PBF · Analog Devices

🌐

Telecom Equipment

Telecom equipment often requires multiple voltage rails from a -48V backplane. The LT1076CQ#PBF can be used in flyback or buck-boost configurations to generate positive and negative supplies. Its 100kHz switching frequency allows for compact magnetics, saving board space. The device's high input voltage rating handles the -48V rail with margin. Its current-mode control provides excellent line and load regulation, critical for reliable telecom operation.

Recommended

ADUM1201ARZ · Analog Devices ADG1233YCPZ-REEL7 · Analog Devices

💡

LED Lighting Drivers

The LT1076CQ#PBF can drive LED strings in buck configuration, providing constant current with external sensing. Its adjustable output voltage allows matching the LED forward voltage. The 2A switch current can drive multiple LEDs in series. The device's high efficiency reduces heat in lighting fixtures. PWM dimming can be implemented by toggling the shutdown pin. The wide input range supports various AC-DC adapter outputs.

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AD8210YRZ · Analog Devices LT3045EDC (Low-noise LDO for sensitive LED drivers)

Recommended Products Summary

UC3842BD1013TR STMicroelectronics Used in: Industrial Power Supplies TNY277PN Power Integrations Used in: Industrial Power Supplies AD8210YRZ Analog Devices Used in: Battery Chargers, LED Lighting Drivers REF192ESZ Analog Devices Used in: Battery Chargers AD8412AWBRZ Analog Devices Used in: Automotive Electronics LTC3882-1 Analog Devices Used in: Automotive Electronics ADM7150ARDZ Low-noise LDO for post-regulation Used in: Distributed Power Systems LTM4644IY#PBF Analog Devices Used in: Distributed Power Systems ADUM1201ARZ Analog Devices Used in: Telecom Equipment ADG1233YCPZ-REEL7 Analog Devices Used in: Telecom Equipment LT3045EDC Low-noise LDO for sensitive LED drivers Used in: LED Lighting Drivers

What is the output current of LT1076CQ#PBF?

The LT1076CQ#PBF is rated for 2A switch current. According to the Analog Devices datasheet, the LT1076 is a 2A monolithic bipolar switching regulator, while the LT1074 is the 5A version. The output current depends on the topology and external components, but the switch can handle up to 2A.

What is the input voltage range of LT1076CQ#PBF?

The LT1076CQ#PBF can operate with input voltages up to 60V. This wide input range makes it suitable for industrial and automotive applications where input transients are common. The exact minimum input voltage depends on the output voltage and topology, but the device is designed to handle high-voltage inputs.

What is the switching frequency of LT1076CQ#PBF?

The LT1076CQ#PBF operates at a fixed 100kHz switching frequency. This frequency is a trade-off between efficiency and component size, allowing for relatively small inductors and capacitors while maintaining good efficiency. The current-mode control architecture ensures stable operation across load and line variations.

Can LT1076CQ#PBF be used as a boost converter?

Yes, the LT1076CQ#PBF can be configured as a boost converter. According to the datasheet, the device supports buck, boost, flyback, and inverting topologies. The internal switch and control circuitry are designed to handle these configurations, making it a versatile solution for various power conversion needs.

What is the output voltage range of LT1076CQ#PBF?

The LT1076CQ#PBF has an adjustable output voltage range from 2.5V to 50V. This wide range is set by external resistors, allowing designers to tailor the output to their specific requirements. The device can also be used in fixed-output versions like the LT1076-5 for 5V applications.

Is LT1076CQ#PBF RoHS compliant?

Yes, the LT1076CQ#PBF is RoHS compliant and lead-free, as indicated by the #PBF suffix. This means it meets the European Union's Restriction of Hazardous Substances directive, making it suitable for use in products sold in the EU and other regions with similar regulations.

What is the difference between LT1076CQ#PBF and LT1076CQ#TR?

The LT1076CQ#PBF and LT1076CQ#TR are the same device but differ in packaging and shipping form. The #PBF suffix indicates lead-free and RoHS-compliant, while #TR typically denotes tape-and-reel packaging. Both are electrically identical, but the #PBF version is preferred for new designs due to environmental compliance.

Where can I buy LT1076CQ#PBF online?

LT1076CQ#PBF is available from major distributors such as DigiKey, Mouser, Newark, and LCSC. As of 2026-08-22, LCSC lists it at $6.7858. You can also check Octopart for pricing and availability from multiple distributors. Always verify stock and lead times before ordering.

What is the price of LT1076CQ#PBF?

As of 2026-08-22, the price of LT1076CQ#PBF is approximately $6.79 for single-unit quantities, with volume discounts available. For example, LCSC lists it at $6.7858. Prices vary by distributor and quantity, so it's advisable to compare quotes from multiple sources.

What is the lead time for LT1076CQ#PBF?

The lead time for LT1076CQ#PBF depends on the distributor and current stock levels. DigiKey and Mouser often have it in stock and can ship same-day. For larger quantities, lead times may extend to several weeks. Check with your preferred distributor for the most accurate lead time information.

Is LT1076CQ#PBF in stock?

As of 2026-08-22, LT1076CQ#PBF is in stock at major distributors like DigiKey, Mouser, and LCSC. However, stock levels can change rapidly, so it's recommended to check the distributor's website for real-time availability. Octopart can also show live inventory across multiple suppliers.

What is the best drop-in replacement for LT1076CQ#PBF?

The best drop-in replacement for LT1076CQ#PBF is the LT1076CQ-5#PBF if you need a fixed 5V output, as it shares the same TO-263-6 package and pinout. For a higher current option, the LT1074CQ#PBF is pin-compatible but rated for 5A. Always verify pin compatibility and electrical specifications before substitution.

Can LT1076CQ#PBF replace LT1076CQ?

Yes, LT1076CQ#PBF can replace LT1076CQ. The #PBF suffix indicates lead-free and RoHS-compliant packaging, while the base part number is identical. The electrical specifications are the same, so it is a direct drop-in replacement. Ensure your PCB assembly process supports lead-free soldering.

Where can I download the LT1076CQ#PBF datasheet PDF?

You can download the LT1076CQ#PBF datasheet from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/1076fa.pdf. The datasheet contains detailed specifications, application circuits, and design guidelines. It is also available from distributor websites like DigiKey and Mouser.

What are the key specifications of LT1076CQ#PBF that engineers should know?

The LT1076CQ#PBF is a 2A monolithic bipolar switching regulator with a 100kHz switching frequency, current-mode PWM control, and adjustable output from 2.5V to 50V. It supports buck, boost, flyback, and inverting topologies with input voltages up to 60V. The device is available in a TO-263-6 (D2PAK) package and is RoHS compliant.

Engineering reference data for LT1076CQ#PBF — comparison, design guidance, and compliance information.

Selection Guide

Choose the LT1076CQ#PBF when you need a versatile switching regulator with adjustable output voltage (2.5V to 50V) and support for multiple topologies (buck, boost, flyback, inverting). It is ideal for applications requiring up to 2A switch current and input voltages up to 60V. If you need a fixed 5V output, the LT1076CQ-5#PBF is a drop-in alternative. For higher current (up to 5A), consider the LT1074CQ#PBF, which shares the same package and pinout. The LT1076CQ#TR is electrically identical but may not be lead-free, so prefer the #PBF for new designs. For lower-cost, lower-current applications, the MC34063ADR2G or LM2576T-ADJ are functional alternatives but require PCB changes due to different packages.

Comparison with Alternatives

Parameter	This Product	LT1076CQ-5#PBF	LT1074CQ#PBF	LT1076CQ#TR
Package	TO-263-6 (D2PAK)	TO-263-6 (D2PAK)	TO-263-6 (D2PAK)	TO-263-6 (D2PAK)
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Output Current	2A (Switch)	2A (Switch)	5A (Switch)	2A (Switch)
Output Voltage	Adjustable 2.5V to 50V	Fixed 5V	Adjustable 2.5V to 50V	Adjustable 2.5V to 50V
Switching Frequency	100kHz	100kHz	100kHz	100kHz
Input Voltage Max	60V	60V	60V	60V
Topology Support	Buck, Boost, Flyback, Inverting	Buck, Boost, Flyback, Inverting	Buck, Boost, Flyback, Inverting	Buck, Boost, Flyback, Inverting
RoHS	Compliant	Compliant	Compliant	Compliant

Key Differentiators

Higher switch current than LT1076CQ-5#PBF (vs LT1076CQ-5#PBF)
Lower switch current than LT1074CQ#PBF (vs LT1074CQ#PBF)
Lead-free and RoHS compliant (vs LT1076CQ#TR)

Design Notes

For the LT1076CQ#PBF, ensure the switch node (VSW) trace is short and wide to minimize parasitic inductance and EMI. Place the input capacitor close to the VIN and GND pins. The feedback resistor divider should be placed near the FB pin with a small capacitor for noise filtering. Use a solid ground plane to reduce noise.

The TO-263 (D2PAK) package has a thermal pad that must be soldered to a large copper area on the PCB. For 2A output at high input-output differentials, power dissipation can be significant. Calculate the junction temperature using the thermal resistance and ensure it stays below the maximum rating. Add vias to the ground plane for better heat spreading.

Avoid using the LT1076CQ#PBF without proper input and output capacitance. The datasheet recommends a minimum of 100uF electrolytic on the input and 100uF on the output. Using ceramic capacitors alone may cause instability due to their low ESR. Also, ensure the feedback network is properly compensated to avoid oscillation.