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PDF TFC719 Data sheet ( Hoja de datos )

Número de pieza TFC719
Descripción Switching power supply controller ICs
Fabricantes Tianfeng 
Logotipo Tianfeng Logotipo



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No Preview Available ! TFC719 Hoja de datos, Descripción, Manual

TFC719
高 性 能 电 流 模 式 PWM 开 关 电 源 控 制 器
www.datasheet4u.com
DataSheet
TFC719
【开关电源控制器集成电路】
Tianfeng Science &. Technology Co., Ltd.
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TFC719 pdf
TFC719
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
w w w . d a t as h e e t 4 ·u····.···c···o····m··········································································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 ···················································································300mA
···················································································1000mW
工 作 温 范 围 ·············································································-40---125
储 存 范 围 ········································································55---150
·················································································26010S
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
- - 750 V
- - 250 mA
270
330*
680
PF
81 66* 32 KHz
125
Tianfeng Science &. Technology Co., Ltd.
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TFC719 arduino
TFC719
高 性 能 电 流 模 式 PWM 开 关 电 源 控 制 器
IC内 部 集 成 了 特 的 偏 置 技 术 在 功 率 管 时 , OB输 出 到 地 , 时 偏 置
OE输 出 到 约 1.5V, 反 向 偏 置 发 射 Ic电 流 的 度 , 扩 展 安 全 工 作
开 关 承 受 反 向 CB电 压 使 开 关 800V的 电 压 承 受 。 关 于 更 详 细 的 开 关
压特性参考关的技术数据。
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偏置波形如下所示
6.管 耐 压 特 性 线
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 初 始
电 压 有 驱 电 阻 提 供 的 高 电 压 电 阻 开 关 , 放 大 Ic电 流
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 输 出 的 VCC电 压 降 到 4.2V则 振 荡 进 入
VCC降 低 到 3.6V时 , IC始 重 启 动
如下所示
8.VCC
Tianfeng Science &. Technology Co., Ltd.
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