Product Overview

Product Overview
NCV97310: Multi-output Power Management Unit (PMU) with 3 Buck
Regulators.
For complete documentation, see the data sheet
Product Description
The NCV97310 is 3-output regulator consisting of a low-Iq battery-connected 3 A 2 MHz non-synchronous switcher and two lowvoltage 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.
Features
Benefits
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Programmable Spread Spectrum
Hiccup Overcurrent Protections
Individual Reset Pins with Adjustable Delays
QFN Package with Wettable Flanks (Pin Edge Plating)
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 BatteryConnected 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
For more features, see the data sheet
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Applications
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EMI Reduction
Reduce power during short-circuit events
Voltage Monitoring
Aids in visual inspection of solder joints
End Products
Infotainment
Body Electronics
Telematics
ECU
• Automotive
Part Electrical Specifications
Product
Compliance
Status
Topology
Control
Mode
VCC Min
(V)
VCC Max
(V)
VO Typ (V) IO Typ (A)
Efficiency
(%)
fSW Typ
(kHz)
Package
Type
NCV97310MW33R2G
AEC
Qualified
Active
StepDown
Current
Mode
4.1
45
1.2-5
3
85
2000
QFN-32
Active
StepDown
Current
Mode
4.1
45
1.2-5
3
85
2000
QFN-32
PPAP
Capable
Pb-free
Halide free
NCV97310MW50R2G
AEC
Qualified
PPAP
Capable
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016