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PDF TFC718S Data sheet ( Hoja de datos )

Número de pieza TFC718S
Descripción Switching power supply controller IC
Fabricantes Tianfeng Science 
Logotipo Tianfeng Science Logotipo



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No Preview Available ! TFC718S Hoja de datos, Descripción, Manual

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TFC718S
高 性 能 电 流 模 式 PWM 开 关 电 源 控 制 器
DataSheet
TFC718S
【开关电源控制器集成电路】
Tianfeng Science &. Technology Co., Ltd.
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Datas

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TFC718S pdf
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TFC718S
高 性 能 电 流 模 式 PWM 开 关 电 源 控 制 器
极限参数
供 电 电 压 VCC ·······················································································16V
启 动 电 压 ·························································································16V
引 脚 输 电 压 ··············································································VCC+0.3V
OC 电 极 承 受 电 压 ··································································0.3-850V
峰 值 开 关 电 流 ···················································································800mA
···················································································1000mW
工 作 温 范 围 ·············································································40---125
储 存 范 围 ········································································55---150
·················································································260,10S
推荐工作条件
项目
供 电 电 压 VCC
引脚输电压
峰值反向电压
峰值开关电流
频率
工作结温
最小 典型
4.8 5.5
-0.3 -
最大
9.0 V
Vcc V
- - 800 V
- - 650 mA
650 680 920 PF
65 61 45 KHz
125
Tianfeng Science &. Technology Co., Ltd.
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TFC718S arduino
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TFC718S
高 性 能 电 流 模 式 PWM 开 关 电 源 控 制 器
6.管 耐 压 特 性 线
偏置波形如下所示
7.Vbe电 压 波 形
5压 与
IC具 有 带 迟 滞 电 压 功 能 。 在 VCC电 压 达 8.8VIC启 动 , 这 个
启动电压有驱电阻提供的高电压电阻开关
放 大 Ic电 流 在 IC内 部 限 制 电 路 VCC容 充 , 从 而 电 压 。 在 IC
工 作 VCC电 压 在
4.8-9V之 间 ( 包 括 满 负 输 出 的 VCC电 压 降 到 4.4V则 振 荡 进 入
VCC降 低 到 3.8V时 , IC始 重 启 动
如下所示
8.VCC
IC内 部 VCC具 有 一 个 上 限 电 压 比 器 控 制 VCC 试 图 大 于 9.8V
FB下 拉 VCC9.8V到 过 电 压 的 限 制 功 能 。 功 能 以 方
便 地 实 现 的 电 压 功 能 避 免 输 出 开 的 输 出 电 压 大 幅 度
安 全 特 性 的 VCC的 设 计 应 的 范 围 避 免
11
Tianfeng Science &. Technology Co., Ltd.
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