CXAC85185 is a high performance offline PWM controller for low power AC/DC charger and adaptor applications. It operates in primary-side regulation. Consequently, opto-coupler and voltage reference IC such as CXPU3357D could be eliminated. Proprietary Constant Voltage (CV) and Constant Current(CC) control are integrated. 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 wireloss compensation

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[ CXAC85185 ]"
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产品概述 返回TOP
CXAC85185 is a high performance offline PWM controller for low power AC/DC charger and adaptor applications. It operates in primary-side regulation. Consequently, opto-coupler and voltage reference IC such as CXPU3357D could be eliminated. Proprietary Constant Voltage (CV) and Constant Current(CC) control are integrated. 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 wireloss compensation. CXAC85185 offers power-on soft-start control and protection coverage with auto-recovery features including Cycle-by Cycle current limiting, VCC UVLO,OTP, SCP. Excellent EMI performance is achieved with frequency shuffling technique. CXAC85185 is available in SOT23-6 packages.
产品特点 返回TOP
High precision constant voltage(CV) and constant current (CC) output. Primary-Side- Regulation without secondary voltage reference and Opto-coupler.
Programmable CV and CC Regulation.
Built- in Adaptive Peak Current Regulation
Programmable wireloss Compensation
Power-on Soft-Start.
Flyback Topology in DCM Operation
Built-in Leading Edge Blanking(LEB)
Cycle-by-Cycle Current Limiting
VCC under voltage lockout (UVLO).
Short Circuit Protection.
Over Temperature Protection.
Available in SOT23-6 Packages.
RoHS Compliant and 100% Lead (Pb)-Free
应用范围 返回TOP
Cell Phone Charger
Small Power Adaptor
Lower Power LED drivers
Linear Regulator/RCC Replacement.
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产品封装图 返回TOP
电路原理图 返回TOP
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AC/DC PWM Controller |
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Product |
Status |
Device Description |
VIN(min~max) |
VOUT |
IOUT |
IQ(typ) |
Vfb |
Frequency |
Pkg |
Active |
1.9A固定频率白光驱动 |
2.5~5V |
3-27v |
1.9A |
170uA |
0.3V |
1.2MHZ |
SOT23-6 |
|
NRFED |
1A白光驱动 |
2.7~4.5V |
ADJ |
2.5A |
100uA |
0.1V |
1MHZ |
SOT23-6 |
|
NRFED |
450uA |
60KHZ |
420mA |
TO92 |
|||||
NRFED |
700uA |
40KHZ |
420mA |
SOT23-6 SOP8 |