快速瞬态响应低占空比CXSD62547持续时间COT脉冲宽度调制控制同步整流开关轻载自动高效间断运行方式

proprietary Instant-PWM™ fast-response, constant-on-time (COT) PWM control method supports high input/output voltage ratios (low duty cycles), and fast transient response while maintaining a near constant operating frequency over line, load and output voltage ranges. This control method provides stable operation without complex compensation and even with low ESR ceramic capacitors.The CXSD62547 is a high efficiency synchronous step-down DC/DC regulator featuring internal power and synchronous rectifier switches capable of delivering 6A of continuous output current and up to 12A peak output current over a wide input voltage range of 4V to 28V.Internal 40mΩ power and 20mΩ synchronous rectifier switches provide excellent efficiency over a range of applications, especially for low output voltages and low duty cycles. Cycle-by-cycle current limit, input under voltage lock-out, internal soft-start, output under- and over-voltage protection, and thermal shutdown provide safe operation in all operating conditions.The CXSD62547 is available in a compact QFN3X3-12 package.

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· Fast Transient Responseusu嘉泰姆

· Wide Input Voltage Range: 4-28Vusu嘉泰姆

· Internal 40mΩ Power Switch and 20mΩ Synchronous Rectifierusu嘉泰姆

· 6A Continuous 12A Peak Output Current Capabilityusu嘉泰姆

· Accurate Feedback Reference Voltage: 0.6V ±1.5%usu嘉泰姆

· Pseudo-Constant 800kHz Operating Frequencyusu嘉泰姆

· Automatic High Efficiency Discontinuous Operating Mode at Light Loadsusu嘉泰姆

· Internal 600μS Soft-Start Limits Inrush Currentusu嘉泰姆

· Programmable Valley Current Limitusu嘉泰姆

· Power Good Indicatorusu嘉泰姆

· Output Discharge Functionusu嘉泰姆

· Cycle-By-Cycle Current Limitusu嘉泰姆

· Hiccup Mode Output Short-Circuit and Over-Voltage Protectionusu嘉泰姆

· Over Temperature Protectionusu嘉泰姆

· Compact Package: QFN3x3-12usu嘉泰姆

应用范围 返回TOPusu嘉泰姆

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· Portable Computingusu嘉泰姆

· LCD-TVusu嘉泰姆

· Set Top Boxusu嘉泰姆

· High Power Access Pointsusu嘉泰姆

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Single Output Step Down Regulator (Integrated Switch)usu嘉泰姆
Numberusu嘉泰姆	Vin usu嘉泰姆 (min) usu嘉泰姆 (V)usu嘉泰姆	Vin usu嘉泰姆 (max)usu嘉泰姆 Vusu嘉泰姆	UVLOusu嘉泰姆 (V)usu嘉泰姆	Iout usu嘉泰姆 (max) usu嘉泰姆 (A)usu嘉泰姆	Vout usu嘉泰姆 (min) usu嘉泰姆 (V)usu嘉泰姆	Out. usu嘉泰姆 Voltage usu嘉泰姆 Acurracyusu嘉泰姆	Quiescent usu嘉泰姆 Current usu嘉泰姆 Typ (uA)usu嘉泰姆	Shutdownusu嘉泰姆 Current usu嘉泰姆 (uA)usu嘉泰姆	MOSFET usu嘉泰姆 (Ron H) usu嘉泰姆 (mΩ)usu嘉泰姆	MOSFET usu嘉泰姆 (Ron L) usu嘉泰姆 (mΩ)usu嘉泰姆
CXSD62478usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	3.5usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	18usu嘉泰姆	0.1usu嘉泰姆	55usu嘉泰姆	35usu嘉泰姆
CXSD62479usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62480Ausu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.4usu嘉泰姆	1.2usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	200usu嘉泰姆	150usu嘉泰姆
CXSD62480Busu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.4usu嘉泰姆	0.6usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	300usu嘉泰姆	200usu嘉泰姆
CXSD62481usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	200usu嘉泰姆	150usu嘉泰姆
CXSD62481Ausu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	200usu嘉泰姆	150usu嘉泰姆
CXSD62481Busu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	3.3usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	200usu嘉泰姆	150usu嘉泰姆
CXSD62481Husu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1.5usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	180usu嘉泰姆	120usu嘉泰姆
CXSD62481Vusu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1.5usu嘉泰姆	0.6usu嘉泰姆	±1.5%usu嘉泰姆	50usu嘉泰姆	0.1usu嘉泰姆	180usu嘉泰姆	120usu嘉泰姆
CXSD62482usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	230usu嘉泰姆	150usu嘉泰姆
CXSD62483usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	60usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62483Ausu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	60usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62483Cusu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	60usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62484usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1.5usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	90usu嘉泰姆	0.1usu嘉泰姆	180usu嘉泰姆	120usu嘉泰姆
CXSD62484Lusu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	90usu嘉泰姆	0.1usu嘉泰姆	250usu嘉泰姆	200usu嘉泰姆
CXSD62485usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62486usu嘉泰姆	2.5usu嘉泰姆	6.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62487usu嘉泰姆	2.5usu嘉泰姆	6.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	260usu嘉泰姆	170usu嘉泰姆
CXSD62488usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	270usu嘉泰姆	160usu嘉泰姆
CXSD62489usu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	40usu嘉泰姆	0.1usu嘉泰姆	230usu嘉泰姆	150usu嘉泰姆
CXSD62490usu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	3usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62490Ausu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	3usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62490Busu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	3usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	100usu嘉泰姆	80usu嘉泰姆
CXSD62490Eusu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	3usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62491Busu嘉泰姆	2.5usu嘉泰姆	5.5usu嘉泰姆	2.5usu嘉泰姆	1.5usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	60usu嘉泰姆	0.1usu嘉泰姆	210usu嘉泰姆	130usu嘉泰姆
CXSD62491Eusu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	2usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62492Lusu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	2usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	120usu嘉泰姆	90usu嘉泰姆
CXSD62493usu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	2usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62493Ausu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	2usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆
CXSD62493Busu嘉泰姆	2.7usu嘉泰姆	5.5usu嘉泰姆	2.65usu嘉泰姆	2usu嘉泰姆	0.6usu嘉泰姆	±2%usu嘉泰姆	55usu嘉泰姆	0.1usu嘉泰姆	110usu嘉泰姆	80usu嘉泰姆

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