Product Details
Product Description
Product Description
characteristic
Comply with aec-q100 standard for automotive applications:
Device temperature class 1: ambient operating temperature range – 40 ° C to + 125 ° C
Device HBM ESD classification level 2
Device CDM ESD classification level C4B
Vin 3.8V to 42V (absolute maximum 47v)
Output: fixed voltage 3.3V, 5V or adjustable voltage
1.5V to 15V (accuracy ± 0.8%)
The optional frequency shift is realized by changing the analog voltage or RT resistance
Comply with CISPR 25 / en 55025 EMI standard
2.2MHz or 440khz fixed switching frequency, accuracy ± 5%
High side and low side gate drivers with slew rate control
Optional spread spectrum
Optional synchronization with external clock
Off mode IQ: 10 µ a (typical value)
Low power standby mode IQ: 35 µ a (typical)
The current limiting threshold is 75mV and the accuracy is ± 0.9%
External resistance or DCR current sensing
Output enable logic input
Intermittent mode for continuous overload conditions
Power supply normal indication output
Optional diode emulation or forced PWM
Vqfn-24 package with wettable side
Using lm25141-q1 and with the help of WEBENCH ® Power Designer: creating custom designs
explain
Lm25141-q1 is a synchronous buck converter suitable for high voltage wide input voltage Buck Regulator Applications. The control method is peak current mode control. Current mode control can provide internal line feedforward, cycle by cycle current limitation and simplified loop compensation. Lm25141-q1 has a yaw rate control function, which can easily meet the requirements of CISPR and automobile EMI.
Lm25141-q1 has two switching frequencies: 2.2MHz and 440khz. The gate driver has a slew rate control function and can reduce EMI through adjustment.
Under light load or no load conditions, lm25141-q1 improves low power consumption efficiency by operating in skip cycle mode. Lm25141-q1 has a high-voltage bias regulator that can automatically switch to an external bias power supply, and can reduce the IQ current from Vin. Other functions include frequency synchronization, cycle by cycle current limitation, intermittent mode fault protection in case of continuous overload, and normal power output.
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