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ST1843 Rad-tolerant current mode PWM controller

The ST1843HR and ST1845HR ICs are Rad-tolerant current mode PWM controllers providing an industry standard solution for the implementation of provides the off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count.

Its radiation hardness and hermetic packaging makes it an ideal choice for aerospace and other harsh environments

技术特性

• Oscillator frequency guaranteed at 250 kHz
• Trimmed oscillator for precise frequency control
• Current mode operation to 500 kHz automatic feed forward compensation
• Latching PWM for cycle-by-cycle current limiting
• Internally trimmed reference with undervoltage lockout
• High current totem pole output
• Undervoltage lockout with hysteresis
• Low start-up and operating current
• Hermetic package
• 50 and 100 krad (Si)
• SEL free @ 120 MeV/cm2/mg at 125°C

ST1843 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
ST1843FKG	Active		1000	Flat-8			ST1843FKG
ST1843K1	Active		1000	Flat-8			ST1843K1

DATASHEET

描述	版本	大小
DS7312: Rad-tolerant current mode PWM controller	1	512KB