LM22676MR-ADJNOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM22676MR-ADJNOPB is an adjustable output, 3 A peak synchronous buck switching regulator by Texas Instruments. Key specs: 42 V input maximum, adjustable output down to 1.285 V, up to 500 kHz switching frequency. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- LM22676MR-ADJNOPB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage from 1.285 V supports a wide range of point-of-load rails from a single high-voltage input up to 42 V
- 3 A peak output current in a compact SOT-23-style MR package enables dense power delivery for industrial and automotive subsystems
- Integrated synchronous rectifier eliminates an external Schottky diode, improving efficiency and reducing BOM component count
- 500 kHz typical switching frequency allows use of small external inductors and ceramic capacitors for a minimal-footprint power stage
Applications
LM22676MR-ADJNOPB is used in automotive infotainment, industrial control, and point-of-load DC-DC converter designs where a wide input bus (up to 42 V) must be stepped down to 3.3 V, 5 V, or other logic rails at up to 3 A. Its adjustable output makes it suitable for programmable power supplies, motor pre-driver supply rails, and FPGA core voltage regulators. The integrated synchronous rectifier improves light-load efficiency, benefiting always-on subsystems in battery-backed embedded controllers.
Specifications
| YTEOL | EYTEOL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM22676MR-ADJNOPB:
Switching Regulator, Voltage-mode, 3A, 500kHz Switching Freq-Max, PDSO8
Switching Regulator, Voltage-mode, 3A, 500kHz Switching Freq-Max, PDSO8
Switching Regulator, Voltage-mode, 5.5A, 600kHz Switching Freq-Max, PDSO8
Switching Regulator, Voltage-mode, 3A, 500kHz Switching Freq-Max, PDSO8
Frequently Asked Questions
What is the input voltage range of LM22676MR-ADJNOPB, and does it suit 24 V industrial bus systems?
LM22676MR-ADJNOPB accepts input voltages up to 42 V maximum, comfortably covering a 24 V nominal industrial bus that may spike to 36 V under load-dump conditions. The wide input range also accommodates 12 V automotive and 28 V aerospace/avionics supply buses without additional input clamping circuits.
How is the output voltage of LM22676MR-ADJNOPB set, and what is the minimum achievable output?
The output voltage is set by an external resistor divider connected to the feedback pin. The internal reference is 1.285 V, so placing the center of the divider at that level sets the desired rail. The minimum programmable output is 1.285 V, making it compatible with sub-1.5 V FPGA core rails, while the maximum is bounded by the input minus the dropout margin at the selected switching duty cycle.
What peak output current can LM22676MR-ADJNOPB supply, and is it sufficient for a dual-core processor supply rail?
LM22676MR-ADJNOPB delivers up to 3 A peak output current, which satisfies the steady-state current demand of most dual-core application processors (typically 1 A to 2.5 A at 1 V to 1.8 V core voltage). The 3 A rating also provides headroom for inrush current during processor startup and transient load steps without triggering over-current protection on moderate loads.
How does the integrated synchronous rectifier in LM22676MR-ADJNOPB improve efficiency compared to a non-synchronous buck with an external Schottky?
A Schottky diode with 0.3 V to 0.5 V forward drop dissipates roughly 0.9 W to 1.5 W at 3 A during the freewheeling interval. The synchronous MOSFET in LM22676MR-ADJNOPB has a typical RDS(on) of a few tens of milliohms, reducing freewheeling loss to under 100 mW at the same current, improving efficiency by 3% to 5% at full load and enabling cooler operation without heatsinking in the MR package.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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