LM21305SQ/NOPB Semiconductors - ICs by Texas Instruments


Status: Unknown
Series: -
RoHS: Unknown
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The LM21305 is a full-featured, 5-A, synchronous buck dc-dc converter optimized for solution size, flexibility, and high conversion efficiency. High-power density LM21305 designs are easily achieved by virtue of monolithic integration of high-side and lowside power MOSFETs, high switching frequency, peak current-mode control, and optimized thermal design. The efficiency of the LM21305 is maximized at light loads with diode emulation mode operation and at heavy loads by optimal design of the MOSFET adaptive gate drivers to minimize switch dead-times and body-diode conduction losses. The LM21305 accepts a wide input voltage range of 3 V to 18 V for interface to various intermediate bus voltages, including 3.3-V, 5-V, and 12-V rails. A 1.5% voltage reference and 70-ns, high-side MOSFET minimum controllable on-time enable output voltages as low as 0.598 V with excellent setpoint accuracy. The LM21305 is available in a 5-mm × 5-mm2 WQFN-28 thermally-enhanced package with 0.5-mm pitch.

Prices starting from US$3.19

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Logo for Texas Instruments Texas Instruments US$3.19
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Logo for Chip One Stop Chip One Stop US$3.45
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Logo for Newark Electronics Newark Electronics US$6.67
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DC / DC Converter Type -
Input Voltage Min 3V
Input Voltage Max 18V
No. of Outputs 1 Output, 1Outputs
DC / DC Converter IC Case WQFN
No. of Pins 28Pins
Output Current 5A
Output Voltage Min 600mV
Output Voltage Max -
Switching Frequency 1.5MHz
Topology Synchronous Buck (Step Down)
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 2A - 4 weeks
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Min 600mV
Output Type Adjustable

Alternative Descriptions

3-18V, 5A, Current Mode Synchronous Buck Regulator with Adjustable Frequency | Texas Instruments
Dc/Dc Conv, Sync Buck, 1.5Mhz, Wqfn-28 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LM21305SQ/NOPB?

Additional datasheets, footprints and schematics for LM21305SQ/NOPB are listed on our Part Details page. You can also find images and similar parts to LM21305SQ/NOPB on this page.

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What category does LM21305SQ/NOPB fall under?

The LM21305SQ/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

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Is the LM21305SQ/NOPB RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Texas Instruments, Chip One Stop, Farnell, Newark Electronics and element14 have stock available or on a lead time for LM21305SQ/NOPB.

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