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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)
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Reference Price
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
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
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
NCV891930MW01R2G
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
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可靠性数据
Die Related Summary Data
Device: NCV891930MW00AR2G
Equivalent to wafer fab process: I3T
产品技术
产品技术
等效器件小时
平均故障间隔时间/平均无故障时间(按小时计算)
FITS
I3T
4
4350769675
More Details
Re-calculate Data
Data is based on the following assumptions.
Note: The temperature and confidence level may be adjusted to your requirements.
Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)
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