方案
设计
Controllers | NCV891930
Low Quiescent Current 2 MHz Automotive Synchronous Buck Controller
概览
The NCV891930 is a 2 MHz fixed−frequency low quiescent current buck controller with spread spectrum that operates up to 38 V (typical). It may be synchronized to a clock or to separate NCV891930. Peak current mode control is employed for fast transient response and tight regulation over wide input voltage and output load ranges. Feedback compensation is internal to the device, permitting design simplification. The NCV891930 is capable of converting from an automotive input voltage range of 3.5 V (4.5 V during startup) to 18 V at a constant base switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. The switching frequency folds back to 1 MHz for input voltages between 20 V up to 38 V (typical). Under load dump conditions up to 45 V the regulator shuts down. A high voltage bias regulator with automatic switchover to an external 5 V bias supply is used for improved efficiency. Several protection features such as UVLO, current limit, short circuit protection, and thermal shutdown are provided. 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 solution.(410 kHz version offered with NCV881930)
应用
- Radio and Infotainment
- Telematics
- ADAS (safety applications)
- Instrumentations & Clusters
终端产品
- Automotive
特性
- 30 µA Operating Current at No Load
- 75 mV Current Limit Sensing
- Capable of 45 V Load Dump
- Board Selectable Fixed Output Voltages With Lockout
- 2 MHz Operating Frequency with synchronization capability
- Adaptive Non−Overlap Circuitry
- Integrated Spread Spectrum
- Logic level Enable Input Can be Tied Directly to Battery
- Short Circuit Protection Pulse Skip
- Battery monitoring for UVLO and Overvoltage Protection
- Thermal Shutdown (TSD)
- Adjustable Soft−Start
- Individual Enable and Reset pins
- 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
搜寻
Close Search
产品:
4
Share
排序方式
Product Groups:
┗
Orderable Parts:
4
产品
NCV891930MW01AR2G
Active
Pb
A
H
P
QFNW-24
1
260
REEL
4000
F
Step-Down
1
Current/Voltage Mode
3.5
45
2000
$1.5056
More Details
NCV891930MW00AR2G
Active
Pb
A
H
P
QFNW-24
1
260
REEL
4000
F
Step-Down
1
Current/Voltage Mode
3.5
45
2000
$1.5056
More Details
NCV891930MW00R2G
Last Shipments
Pb
A
H
P
QFNW-24
1
260
REEL
4000
N
Step-Down
1
Current/Voltage Mode
3.5
45
2000
Price N/A
More Details
NCV891930MW01R2G
Last Shipments
Pb
A
H
P
QFNW-24
1
260
REEL
4000
N
Step-Down
1
Current/Voltage Mode
3.5
45
2000
Price N/A
More Details
Show More
1-25 of 25
Products per page
Jump to :
1
向销售发送邮件
Hello, your current browser settings are preventing us from processing your submission. You can adjust your browser settings and reload the page or you can submit an email directly to inside.sales@onsemi.com
You might also try the following:
- Clear your browser cookies
- Try to open this page in anonymous browser window
- Try a different browser
- Make sure you have reliable internet connection