Name: Automotive Battery-Connected Low-Iq Multi-Output Power Management Unit with 3 Buck Regulators
Brand: Automotive Battery-Connected Low-Iq Multi-Output Power Management Unit with 3 Buck Regulators
SKU: NCV97311A

Automotive Battery-Connected Low-Iq Multi-Output Power Management Unit with 3 Buck Regulators

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Overview

The NCV97311A is a 3−output regulator consisting of a low−Iq battery−connected 3 A, 2 MHz non−synchronous switcher and two low−voltage 1.5 A, 2 MHz synchronous switchers; all using integrated power transistors.The high−voltage switcher is capable of converting a 4.1 V to 18 V battery input to a 5 V or 3.3 V output at a constant 2 MHz switching frequency, delivering up to 3 A. In overvoltage conditions up to 37 V, the switching frequency folds back to 1 MHz; in load dump conditions up to 45 V the regulator shuts down.The output of the battery−connected buck regulator serves as the low voltage input for the 2 downstream synchronous switchers. Each downstream output is adjustable from 1.2 V to 3.3 V, with a 1.5 A average current limit and a constant 2 MHz switching frequency. Each switcher has an independent enable and reset pin, giving extra power management flexibility.For low−Iq operating mode, the low−voltage switchers are disabled and the standby rail is supplied by a low−Iq LDO (up to 150 mA) with a typical Iq of 30 uA. The LDO regulator is in parallel to the high−voltage switcher, and is activated when the switcher is forced in standby mode.All 3 SMPS outputs use peak current mode control with internal slope compensation, internally−set soft−start, battery undervoltage lockout, battery overvoltage protection, cycle−by−cycle current limiting, hiccup mode short−circuit protection and thermal shutdown. An error flag is available for diagnostics.

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Automotive

5.0 V and 3.3 V Versions Available
Low Quiescent Current in Standby Mode
Programmable Spread Spectrum for EMI Reduction
2 Microcontroller-Enabled Low Voltage Synchronous Buck Converters
Large Conversion Ratio of 18 V to 3.3 V Battery Connected Switcher
Wide Input of 4.1 to 45 V with Undervoltage Lockout (UVLO)
Fixed Frequency Operation Adjustable from 2.0 to 2.6 MHz
Internal 1.5 ms Soft−starts
Cycle−by−cycle Current Limit Protections
Hiccup Overcurrent Protections (OCP)
Individual Reset Pins with Adjustable Delays
QFN Package with Wettable Flanks (pin edge plating)
NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

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Reference Price

NCV97311MW33AR2G

Last Shipments

QFNW-32

484AB

260

REEL

5000

Step-Up/Step-Down

Current Mode

4.1

1.2 - 5

2000

Price N/A

NCV97311MW50AR2G

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QFNW-32

484AB

260

REEL

5000

Step-Up/Step-Down

Current Mode

4.1

1.2 - 5

2000

$3.2199

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4350769675

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