NCV97310: Multi-output Power Management Unit (PMU) with 3 Buck Regulators
Description: The NCV97310 is 3−output regulator consisting of a...
The NCV97310 is 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 36 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 synchronous switchers. Each downstream output is adjustable from 1.2 V to 3.3 V, with a 1.5 A current limit and a constant 2 MHz switching frequency. Each switcher has independent enable and reset pins, 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.
Programmable Spread Spectrum - EMI Reduction
Hiccup Overcurrent Protections - Reduce power during short-circuit events
Individual Reset Pins with Adjustable Delays - Voltage Monitoring
QFN Package with Wettable Flanks (Pin Edge Plating) - Aids in visual inspection of solder joints
5.0 V and 3.3 V Primary Output Versions Available
Low Quiescent Current in Standby Mode
2 Microcontroller-enabled Low Voltage Synchronous Buck Converters
Large Conversion Ratio of 18 V to 3.3 V for Battery-Connected Switcher
Wide Battery Input of 4.1 V to 45 V with Undervoltage Lockout (UVLO)
Fixed Frequency Operation Adjustable from 2.0 MHz to 2.6 MHz
Internal 1.5 ms Soft-Start for All 3 Switchers
Cycle-by-cycle Peak Current Limit Protections
These Devices are Pb-Free, Halogen-Free/BFR-Free and are RoHS Compliant
Battery Overvoltage Protection
Standby Rail Supplied by a Low-Iq LDO
Technical Documentation & Design Resources
Evaluation/Development Tool Information
Product Change Notification
Availability and Samples
Compliance: AEC Qualified PPAP Capable Pb-free Halide free
Description: Multi-output Power Management Unit (PMU) with 3 Buck Regulators, NCV97310 - 3.3 V Version
Package Type: QFN-32
Package Case Outline: 488AM
Container Type: REEL
Container Qty: 5000
VCC Min (V):
VCC Max (V):
VO Typ (V):
1.2 - 5
IO Typ (A):
fSW Typ (kHz):