TDA3681J åè£
ç°è´§å¤éé稳åå¨
ç¨é常å°çè¾åºçµå®¹å¨æä½çåªå£°æ§è½åè¯å¥½çç¨³å®æ§
Second supply pin for regulators 3 and 4 to reduce power dissipation (e.g. via a DC-to-DC converter)
çç®¡æºæ3第äºçµæºå¼èå4éä½åèï¼ä¾å¦éè¿ä¸ç´æµå°ç´æµè½¬æ¢å¨ï¼
Three VP -state controlled regulators (regulators 1, 3 and 4) and a power switch
ä¸å¯æ»è£-ç¶æè°èæ§å¶ï¼è°èå¨1ï¼3å4ï¼åçµæºå¼å
³
Regulator 2, reset and ignition buffer operational during load dump and thermal shutdown
è°èå¨2ï¼å¤ä½åç¹ç«ç¼å²æä½å¨ç©è´è·åçå
³æº
Combined control pin for switching regulators 1 and 3
èåæ§å¶å¼è1å3å¼å
³ç¨³åå¨
Separate control pins for switching regulator 4 and the power switch
å¼å
³ç¨³åå¨4åçµæºå¼å
³å嫿§å¶å¼è
Supply voltage range from -18 to +50 V
çµæºçµåèå´ä»18å°50 V
Low quiescent current in standby mode (when regulators 1, 3 and 4 and power switch are switched off and ignition input is low)
å¨å¾
æºæ¨¡å¼ä¸ä½éæçµæµï¼å½çç®¡æºæ1ï¼3å4ï¼çµæºå¼å
³ï¼å
³éç¹ç«è¾å
¥ä½ï¼
Hold output (open-collector output stage) for low VP (regulators 1, 3 and 4 and power switch off)
ä¿æè¾åºï¼éçµæå¼è·¯è¾åºçº§ä½VPï¼çç®¡æºæï¼1ï¼3å4åçµæºå¼å
³ï¼
Hold output when one of regulators 1 and 3 and/or 4 is out of regulation
å½ä¸ä¸ªææè¾åºå¨1å3å/æ4çè§å®
Hold output for foldback mode of power switch and regulators 1, 3 and 4
为åçå¼å
³åè°èå¨1æè¿æ¨¡å¼è¾åºï¼3å4
Hold output for load dump and temperature protection
ä¿æè¾åºä¸ºç©è´è·åæ¸©åº¦ä¿æ¤
Reset (push-pull output stage) for regulator 2
å¤ä½ï¼æ¨æ½è¾åºçº§ï¼è°èå¨2
Adjustable reset delay time
å¯è°å¤ä½å»¶è¿æ¶é´
High supply voltage ripple rejection
é«çµå纹波æå¶
Backup capacitor for regulator 2
è°èå¨çµå®¹å¨2çå¤ä»½
One independent ignition buffer (active HIGH).
ä¸ä¸ªç¬ç«çç¹ç«ç¼å²åºï¼é«çµå¹³ææï¼ã
http://www.mcct-sensor.com/