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一,产品概述(General Description) JTMA7322/A is a synchronous buck converters with integrated 85m Ω high side and 75m Ω low side power MOSFETs. The JTMA7322/A with a current-mode control scheme can convert wide input voltage of 2.9V to 6V to the output voltage adjustable from 0.8V to 6V to provide excellent output voltage regulation. The JTMA7322/A is equipped with an automatic Skip/PWM mode operation. At light load , the IC operates in the Skip mode to reduce the switching losses. At heavy load, the IC works in PWM mode. The JTMA7322/A is also equipped with Power-on-reset, soft start, soft-stop, and whole protections (under-voltage,over-voltage, over-temperature and current-limit) into a single package. This device, available in SOP-8, TDFN3x3-10 packages,provides a very compact system solution external components and PCB area. 二.产品特点(Features) High Efficiency up to 94% Adjustable Output Voltage from 0.8V to V PVDD Operating from 2.9 to 6V Supply Integrated 85mΩ High Side / 75mΩ Low Side MOSFETs Low Dropout Operation: 100% Duty Cycle Stable with Low ESR Ceramic Capacitors Current up to 2A Power-On-Reset Detection on VCC and VIN Mode Selestion : JTMA7322 : Automatic PFM/PWM JTMA7322A : Forced PWM Integrate Soft-Start and Soft-Stop Over-Temperature Protection Over-Voltage Protection Under-Voltage Protection High/ Low Side Current Limit Power Good Indication Enable/Shutdown Function Available in SOP-8P and TDFN3x3-10 Packages Lead Free and Green Devices Available 三,应用范围 (Applications) Notebook Computer & UMPC LCD Monitor/TV Set-Top Box DSL, Switch HUBr Portable Instrument 四.下载产品资料PDF文档
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