概述

CXW8503 is a wide input voltage, high
efficiency CC and CV step-down DC/DC
converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.
CXW8503 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 90%. An over current protection and short circuit protection functions are built outside that it can set by a resistance. An
external compensation is easily to system stable; the low ESR output capacitor can be used.
With the addition of an internal N-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP-8L and SOP-8L-EP
packages, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter.

特性

- Perfect Solution for Car Charger
- Input Voltage：8V to 40V - High CC accuracy ±5%
- High CV accuracy ±2%
- Duty ratio：0% to 90% PWM control - Oscillation frequency：
100K Hz for CXW8503A
200K Hz for CXW8503B
- Thermal Shutdown function. - Short Circuit Protect (SCP). - Built-in internal SW N-channel MOS. - Current mode non-synchronous PWM converter - Cycle to cycle Current Limiting
- External current limit setting. - Under Voltage Lockout. - Over Voltage Protection.

封装

深圳市诚芯微科技有限公司