1、DescriptionThe AP3700/A is a green-mode pulse width modulation(PWM) controller. It is specially designed for low powerapplications such as off-line battery chargers, where theneeds for low standby power, space saving and low costare all required. In a battery charger rated 5V/1A, themaximum standby
2、power is only 0.18Watt.In normal operation, the AP3700/A switches on and off ata fixed switching frequency of 60 kHz. With a currentlimit capability of 460mA for AP3700 and 500mA forAP3700A, the AP3700/A can directly drive the emitter ofhigh voltage NPN transistor. When output power fallsbelow a giv
3、en level, the IC enters skip cycle mode toreduce power consumption.The AP3700/A also features under-voltage lockout, over-current and short circuit protections.Features Current Mode Control with Skip Cycle Capability Lower Operating Current: 0.45mA Fixed Switching Frequency: 60 kHz Frequency Ditheri
4、ng for Low EMI: 2.5kHz Under-Voltage Lockout Protection Over-Current Protection Internal Short Circuit Protection Higher Output Voltage at OUT Terminal Low Total Cost SolutionApplications Battery Chargers Off-Line Power SuppliesBenefits High Charge Characteristics for Battery Chargers Low total cost
5、Parametric TableSwitching Frequency (kHZ)60Startup Current (A)230Operating Current (A)45Effective Current Limit (mA)AP3700 460AP3700A 500Switching Dither (kHZ)2.5Package TO-92Additional Available Materials Samples Data Sheet ESD Report Demo Board Application NoteJul. 2007 BCD Semiconductor Manufactu
6、ring LimitedProduct BriefLOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER AP3700/A Frequen her for Low EMI: 2.5kHz Higher Output Breakdown Voltage Lower Total Cost SolutionJun. 2007Draft for Discussion only.Please make your comments.Ordering Information Example Detailed information please refer
7、 to the relevant datasheet.Product BriefPin ConfigurationLOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER AP3700/ATO-92Package Switching Frequency Temperature Range Part Number Marking ID Packing TypeTO-92 60kHz-40 to 85oCAP3700Z-E1 3700Z-E1 BulkAP3700ZTR-E1 3700Z-E1 AmmoAP3700AZ-E1 3700AZ-E1 B
8、ulkAP3700AZTR-E1 3700AZ-E1 AmmoJul. 2007 BCD Semiconductor Manufacturing LimitedUSA 30920 Huntwood Ave. Hayward, CA 94544,USATel : +1-510-324-2988Fax : +1-510-324-2788Taiwan 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, TaiwanTel : 886-2-2656-2808Fax : 886-2-2656-2806Shanghai 8F, B Zone, 900 Yi
9、 Shan Road, Shanghai 200233, ChinaTel : 86-21-6495 9539Fax : 86-21-6485 9673Shenzhen Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, FutianDistrict, Shenzhen 518026, China Tel : 86-755-8826 7951Fax : 86-755-8826 7865Sales Office:OUTVCCGND123DescriptionThe AP3700/A is a green-mode pulse width mo
10、dulation(PWM) controller. It is specially designed for low powerapplications such as off-line battery chargers, where theneeds for low standby power, space saving and low costare all required. In a battery charger rated 5V/1A, themaximum standby power is only 0.18Watt.In normal operation, the AP3700
11、/A switches on and off ata fixed switching frequency of 60 kHz. With a currentlimit capability of 460mA for AP3700 and 500mA forAP3700A, the AP3700/A can directly drive the emitter ofhigh voltage NPN transistor. When output power fallsbelow a given level, the IC enters skip cycle mode toreduce power
12、 consumption.The AP3700/A also features under-voltage lockout, over-current and short circuit protections.Features Current Mode Control with Skip Cycle Capability Lower Operating Current: 0.45mA Fixed Switching Frequency: 60 kHz Frequency Dither for Low EMI: 2.5kHz Under-Voltage Lockout Protection O
13、ver-Current Protection Internal Short Circuit Protection Higher Output Breakdown Voltage Lower Total Cost SolutionApplications Battery Chargers Off-Line Power SuppliesBenefits High Charge Characteristics for Battery Chargers Low total costParametric TableSwitching Frequency (kHZ)60Startup Current (A)230Operating Current (A)45Effective Current Limit (mA)AP3700 460AP3700A 500Switching Dither (kHZ)2.5Package TO-92Additional Available Materials Samples Data Sheet ESD Report Demo Board Application NoteJun. 2007Draft for Discussion only.Please make your comments.
