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RM3256AS Datasheet(PDF) 1 Page - Shaanxi Reactor Microelectronics Co., Ltd.

Part # RM3256AS
Description  5V1A charger application
PDF  3 Pages
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Manufacturer  REACTOR [Shaanxi Reactor Microelectronics Co., Ltd.]
Direct Link  http://www.reactor-micro.com
Logo REACTOR - Shaanxi Reactor Microelectronics Co., Ltd.

RM3256AS Datasheet(HTML) 1 Page - Shaanxi Reactor Microelectronics Co., Ltd.

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RM3256AS
5V1A 充电器应用方案
陕西亚成微电子股份有限公司
Rev 2016.11
http: // www.reactor-micro.com
产品概述:
RM3256AS 是一款高精度的恒压、恒流原边反馈 AC/DC 转换控制器。
RM3256AS 在全电压范围内可实现低于 75mW 的系统待机功耗，满足六级能效要求。
RM3256AS 集成 800V 功率 BJT，适用于高性能、外部原件精简的充电器，因为芯片工作在原边检测和
控制模式，所以不需要光耦和 TL431。
RM3256AS 运用了准谐振（QR）的驱动技术可改善功率管耐压和 EMI，并提高系统转换效率。
RM3256AS 采用 SOP-7 封装。
系统规格：
5V/1A
输入电压
85Vac-265Vac
输出功率
5W
功率管
800V/1.2A
效率
≥73.6%
恒压精度
≤±3%
待机功耗
＜75mW
恒流精度
≤±3%
变压器
EPC13
典型应用：
图 1
系统应用原理图
HV
HV
GND
CS
FB
VCC
DB1
+
+
Vo+
Vo-
1
3
4
8
2
6
5
N
L
T1
F1
C1
C2
+
L1
R1
C4
D1
R5
R3
R4
R6
R9
D2
C3
R2
R7
C5
+
C7
C6
R8
CPC
U1
D3
CY1


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