LT8645SIV#PBF High Input Voltage Buck Regulators by Analog Devices

Status: Production
Series: LT8645S
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LT8645S/LT8646S synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize all the fast current loops inside and make it easy to achieve advertised EMI performance by eliminating layout sensitivity.The fast, clean, low-overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 40ns minimum on-time allows high step-down ratios even at high switching frequencies. The LT8646S has external compensation to enable current sharing and fast transient response at high switching frequencies.Burst Mode® operation enables ultralow standby current consumption, pulse-skipping mode allows full switching frequency at lower output loads, or spread spectrum operation can further reduce EMI emissions.

Where to Buy

Prices starting from US$6.18

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$6.18
1,974
in stock
Buy Now
Logo for Chip One Stop
Chip One Stop
from US$7.92
490
in stock
Buy Now
Logo for element14
element14
from US$8.55
410
in stock
Buy Now
Logo for Farnell
Farnell
from US$8.07
410
in stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$9.41
335
in stock
Buy Now
Logo for Richardson RFPD
Richardson RFPD
from US$7.98
-
Buy Now

Features

Silent Switcher® 2 Architecture 
Ultralow EMI Emissions on Any PCB
Eliminates PCB Layout Sensitivity
Internal Bypass Capacitors Reduce Radiated EMI 
Optional Spread Spectrum Modulation
High Efficiency at High Frequency
Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT
Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT
Wide Input Voltage Range: 3.4V to 65V
Ultralow Quiescent Current Burst Mode Operation
2.5μA IQ Regulating 12VIN to 3.3VOUT (LT8645S) 
Output Ripple < 10mVP-P
External Compensation: Fast Transient Response and Current Sharing (LT8646S)
Fast Minimum Switch On-Time: 40ns
Low Dropout Under All Conditions: 60mV at 1A
Adjustable and Synchronizable: 200kHz to 2.2MHz
Peak Current Mode Operation 
Output Soft-Start and Tracking
Small 32-Lead 6mm × 4mm LQFN Package
AEC-Q100 Qualified for Automotive Applications

Alternative Descriptions

M, 8A Sync Buck Silent Switche | Analog Devices
DC/DC CONV, SYNC BUCK, 1.95MHZ, 125DEG C | element14
Dc/Dc Conv, Sync Buck, 1.95Mhz, 125Deg C | Newark Electronics
DC TO DC CONVERTER | Richardson RFPD


LT8645SIV#PBF Semiconductors - ICs by Linear Technology

DC/DC CONV SYNC BUCK 2.2MHZ LQFN-32

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Topology Synchronous Buck (Step Down)
Input Voltage Min 3.4V
Input Voltage Max 65V
No. of Outputs 1Outputs
DC / DC Converter IC Case LQFN
No. of Pins 32Pins
Output Current 8A
Output Voltage Min 970mV
Output Voltage Max 64.35V
Switching Frequency 2.2MHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (15-Jan-2018)

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT8645SIV#PBF?

Additional datasheets, footprints and schematics for LT8645SIV#PBF are listed on our Part Details page. You can also find images and similar parts to LT8645SIV#PBF on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LT8645SIV#PBF on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LT8645SIV#PBF price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LT8645SIV#PBF fall under?

The LT8645SIV#PBF is listed under High Input Voltage Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to LT8645SIV#PBF when available in the High Input Voltage Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the LT8645SIV#PBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT8645SIV#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for LT8645SIV#PBF have stock available?

Authorised distributors including Analog Devices, Chip One Stop, element14, Farnell and Newark Electronics have stock available or on a lead time for LT8645SIV#PBF.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for LT8645SIV#PBF often in real-time on the comparison pages.

What if I can't find stock of LT8645SIV#PBF?

You can fill out our help required form which you can use to request a quote for LT8645SIV#PBF from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay