| 品牌：OB | 型号：OB2535 | 类型：其他IC |
| 用途：充电器 | 封装：SOP-8 | 功率：5W |
| 批号：2014 |
OB2535 is a high performance offline PWM Power
switch for low power AC/DC charger and adaptor
applications. It operates in primary-side sensing and
regulation. Consequently, opto-coupler and TL431
could be eliminated. Proprietary Constant Voltage
(CV) and Constant Current (CC) control is integrated
as shown in the figure below.
In CC control, the current and output power setting
can be adjusted externally by the sense resistor Rs at
CS pin. In CV control, multi-mode operations are
utilized to achieve high performance and high
efficiency. In addition, good load regulation is
achieved by the built-in cable drop compensation.
Device operates in PFM in CC mode as well at large
load condition and it operates in PWM with
frequency reduction at light/medium load.
OB2535 offers power on soft start control and
protection coverage with auto-recovery features
including Cycle-by-Cycle current limiting, VDD
OVP, VDD clamp and UVLO. Excellent EMI
performance is achieved with On-Bright proprietary
frequency shuffling technique.
High precision constant voltage (CV) and constant
current (CC) can be achieved by OB2535.
OB2535 is a high performance offline PWM Power
switch for low power AC/DC charger and adaptor
applications. It operates in primary-side sensing and
regulation. Consequently, opto-coupler and TL431
could be eliminated. Proprietary Constant Voltage
(CV) and Constant Current (CC) control is integrated
as shown in the figure below.
In CC control, the current and output power setting
can be adjusted externally by the sense resistor Rs at
CS pin. In CV control, multi-mode operations are
utilized to achieve high performance and high
efficiency. In addition, good load regulation is
achieved by the built-in cable drop compensation.
Device operates in PFM in CC mode as well at large
load condition and it operates in PWM with
frequency reduction at light/medium load.
OB2535 offers power on soft start control and
protection coverage with auto-recovery features
including Cycle-by-Cycle current limiting, VDD
OVP, VDD clamp and UVLO. Excellent EMI
performance is achieved with On-Bright proprietary
frequency shuffling technique.
High precision constant voltage (CV) and constant
current (CC) can be achieved by OB2535.
OB2535
高精度原边反馈开关电源芯片
OB2535是一颗高精度离线式开关电源电路，应用于低功耗AC/DC充电器与适配器。适用于5W以内的方案。OB2535 使用原边取样来进行***的恒流、恒压控制，可以省去一般应用中的光耦与TL431。OB2535在恒流模式下工作于PFM状态，在恒压模式下工作于PWM状态，轻载时降频工作。具有的抖频功能，可以提供更好的EMI性能。封装有DIP-8，SOP8两种。替换品牌IC有：SP5615，CR6235，PS2535，RM3261等等
