XBLW XBL4001DTR

The XBL4001 is a monolithic IC designed for a step- down DC/DC converter, and owe the ability of driving a 5A load withou additional transistor,It saves board space. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against overcurrent operating of the output switch. If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced. The XBL4001 operates at a switching frequency of 150KHz thus allow smaller sized filter.Components than what would be needed with lower frequency switching regulators. Other features include a guaranteed ± 4% tolerance on output voltage under specified input voltage and output load conditions, and ± 10% on the oscillator frequency. The chips are available in SOP8 package and ESOP8L.

• Wides 4.5V to 40V Input Voltage Range
• Fixed 150KHz Switching Frequency
• Voltage Mode Non- synchronous PWM Control
• ON/OFF Shutdown Control Input
• Output Adjustable Voltage From 1.235V to 37V
• Output Load Current:SOP- 8=2A,ESOP- 8=5A
• Low Power Standby Mode
• Built- in Switching MOSFET on Chip

• Portable DVD
• LCD Monitor / TV
• Battery Charger
• ADSL Modem
• Telecom / Networking Equipment