AP5503 60V DC / DC升降压恒流驱动器
描述
AP5503是一款电流模式DC / DC升降压恒流驱动器
，具有用于驱动LED的外部功率NMOS。 AP5503在降压，升压和降压 - 升压模式下
用作LED驱动器。 LED电流采用120mV检测电阻进行外部编程。在500KHz的工作频率
下，外部电感和输入/输出电容都可以很小。调光可以是模拟，PWM或PWM转换为模
拟与外部电容器。
AP5503采用MSOP-10（FD）封装。
特征
高电压：VIN高达60V，VOUT高达60V
降压，升压或降压 - 升压操作
具有500KHz和200KHz开关频率的电流模式PWM
简单的调光：通过一个外部电容将模拟，PWM或PWM转换成模拟信号
软启动以避免浪涌电流
可编程过电压保护可限制输出电压
VIN欠压闭锁和热关断
MSOP-10（FD）包装
有兴趣的朋友可以联 系欧阳：188 1187 4036 Q Q:2355 558 464可提供IC测试板
和配套方案。
AP5503 60V DC/DC Buck-Boost Configuration Converter
Description
The AP5503 is a current mode DC/DC converter with outside power NMOS
designed to drive LEDs. The AP5503 operates as a LED driver in buck,
boost and buck-boost mode. The LED current is externally pro-grammable
with a 120mV sense resistor. With a 500KHz operating frequency, the
external inductor and input/output capacitors can all be small. Dimming
can be either analog, PWM, or PWM converting to analog with an external
capacitor.
The AP5503 is available in MSOP-10 (FD) package.
Features
„High Voltage : VIN up to 60V, VOUT up to 60V
„Buck, Boost or Buck-Boost Operation
„Current Mode PWM with 500KHz and 200KHz Switching Frequency
„Easy dimming : Analog, PWM or PWM Con-verting to Analog with One
External Capacitor
„Soft Start to Avoid Inrush Current
„Programmable Over Voltage Protection to Limit Output Voltage
„VIN Under Voltage Lockout and Thermal Shut-down
„MSOP-10 (FD) Package
有兴趣的朋友可以联 系欧阳：188 1187 4036 Q Q:2355 558 464可提供IC测试板
和配套方案。