LM3421Q1MHX/NOPB 供应商
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LM3421Q1MHX/NOPB
品牌：TI 封装/批号：原厂原装/22+ -
LM3421Q1MHX/NOPB
品牌：TI 封装/批号：温度传感器/21+
LM3421Q1MHX/NOPB 属性参数
- 制造商：National Semiconductor (TI)
- 封装：Reel
- 工厂包装数量：2500
产品特性
- AEC Qualified for Automotive Applications Device Temperature Grade 1: −40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1) Device Temperature Grade 0: −40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
- Device Temperature Grade 1: −40°C ≤ TA ≤ 125°C (LM3421-Q1 and LM3423-Q1)
- Device Temperature Grade 0: −40°C ≤ TA ≤ 150°C (LM3421-Q0 and LM3423-Q0)
- VIN Range From 4.5 V to 75 V
- High-Side Adjustable Current Sense
- 2-Ω, 1-A Peak MOSFET Gate Driver
- Input Undervoltage and Output Overvoltage Protection
- PWM and Analog Dimming
- Cycle-by-Cycle Current Limit
- Programmable Switching Frequency
- Zero Current Shutdown and Thermal Shutdown
- LED Output Status Flag (LM3423-Q1 and LM3423-Q0 Only)
- Fault Status Flag and Timer(LM3423-Q1 and LM3423-Q0 Only)
产品概述
The LM3421-Q1 and LM3423-Q1 family of devices are
versatile high voltage N-channel MOSFET controllers for LED drivers. They can be easily configured
in buck, boost, buck-boost and SEPIC topologies. This flexibility, along with an input voltage
rating of 75 V, makes the these controllers ideal for illuminating LEDs in a large family of
applications.Adjustable high-side current sense voltage allows for tight regulation of the LED current
with the highest efficiency possible. The LM3421-Q1 and
LM3423-Q1 devices use predictive off-time (PRO) control, which is a combination
of peak current-mode control and a predictive off-timer. This method of control eases the design of
loop compensation while providing inherent input voltage feed-forward compensation.The LM3421-Q1 and LM3423-Q1 devices include a
high-voltage start-up regulator that operates over a wide input range of 4.5 V to 75 V. The
internal PWM controller is designed for adjustable switching frequencies of up to 2 MHz, thus
enabling compact solutions.
LM3421Q1MHX/NOPB 电路图
