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NCV891334: Step-Down Regulator, Dual-Mode, 2 MHz Low-IQ

Datasheet: 2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive
Rev. 0 (138kB)
Product Overview
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The NCV891x34 is a Dual Mode regulator intended for Automotive, battery−connected applications that must operate with up to a 45 V input supply. Hybrid Low Power Mode allows the NCV891x34 to operate either as a PWM Buck Converter or as a Low Drop−Out Linear Regulator, and the NCV891x34 is suitable for systems with Low Noise and Low Quiescent Current requirements often encountered in automotive driver information systems. A reset (with fixed delay) and a fault pin (flagging low input voltage and high temperature warnings) simplify interfacing with a microcontroller.

Two pins are provided to synchronize switching to a clock, or to another NCV891x34. The NCV891x34 also provides several protection features expected in automotive power supply systems such as current limit, short circuit protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and an all−ceramic output filter capacitor – forming a space−efficient switching regulator solution.

Features
 
  • 40 µA Iq in Light Load Condition
  • 3.0 A Maximum Output Current in PWM Mode in NCV891334
  • Internal N−channel Power Switch
  • VIN Operating Range 3.7 V to 36 V, Withstands Load Dump to 45 V
  • Logic Level Enable Pin can be Tied to Battery
  • Fixed Output Voltage of 5.0 V or 3.3 V with ±2% Accuracy
  • 2 MHz Free−running Switching Frequency
  • Input and Output Synchronization Pins
  • NCV Prefix for Automotive Requiring Site and Control Changes
  • Wettable Flanks DFN (pin edge plating)
  • These Devices are Pb−Free and are RoHS Compliant
Applications   End Products
  • Safety Vision Systems
  • Audio, Infotainment
  • Instrumentation
  • Telematics
 
  • Automotive
Technical Documentation & Design Resources
Data Sheets (1) Evaluation Board Documents (6)
Package Drawings (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCV891334MW33GEVB Active
Pb-free
Step-Down Regulator, Dual-Mode Evaluation Board
Availability & Samples
Specifications
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCV891334MW33R2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
NCV891334 DFN-12 506CE 1 260 Tape and Reel 3000 $2.4999
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
VCC Min (V)
VCC Max (V)
VO Typ (V)
IO Typ (A)
Efficiency (%)
fSW Typ (kHz)
Package Type
NCV891334MW33R2G  
 $2.4999 
Pb
A
H
P
 Active   
Step-Down
Current Mode
3.7
45
3.3
3
85
2000
DFN-12
Case Outlines
506CE   
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