PDF《FH1117》

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4 1A LOW DROPOUT POSITIVE REGULATOR 1A 低压差三端稳压器 FH1117 Package 封装类型 Temperature Range 温度范围 Part Number 产品型号 Packing Type 包装类型 FH1117SADJ Tape FH1117S15 Tape FH1117S18 Tape FH1117S25 Tape FH1117S285 Tape FH1117S33 Tape SOT-223 0°C ~ 125°C FH1117S5 Tape FH1117 S

18 T Type 产品型号 Packing Type 包装形式 T: Tape 编带 B: Bulk 散装 Package 封装形式 S: SOT-223 Voltage *2005 年第

1 版* All Rights Reserved DESCRIPTION & FEATURES 概述及特点 The FH1117 series of positive adjustable and fixed regulators is designed to provide 1A for applications requiring high efficiency.

All internal circuitry is designed to operated down to 800mV input to output differential and the dropout voltage is fully specified as a function of load current. The FH1117 offers current limiting and thermal protection. The on chip trimming adjusts the reference voltage accuracy to 1%. FH1117 系列三端可调、固定电压调整器,可以提供 1A 的电流,内部电路设计运用于 800mA 输入→输出微分 电路,压差由负载电流确定. FH1117 产品可提供限流及热保护功能,调整参考电压 精度达 1% ・ Output current of 1A typical ・ Three-terminal adjustable or fixed ・ 1.5V,1.8V, 2.5V, 2.85V, 3.3V, 5.0V outputs ・ Low dropout of typical 800mV ・ Thermal protection built in ・ Typical 0.015% line regulation ・ Typical 0.01% load regulation ・ Fast transient response ・ 输出电流(典型值 1A) ・ 三端可调或固定输出 ・ 1.5V,1.8V, 2.5V, 2.85V, 3.3V, 5.0V 输出 ・ 低压差(典型值 800mV) ・ 内置热保护 ・ 线性调整(典型值 0.015%) ・ 负载调整(典型值 0.01%) ・ 快速瞬态响应 Applications 应用 ・ PC Motherboard ・ LCD Monitor ・ DVD-Video Player ・ NIC / Switch ・ Telecom Equipment ・ High Efficiency Linear Regulator ・ Printer and other Peripheral Equipment ・ Battery Charger ・ 电脑主板 ・ LCD 显示器 ・ DVD 视频播放器 ・ 网络接口卡/开关 ・ 通讯设备 ・ 高效率线性调整器 ・ 打印机及其它外设 ・ 充电器 ADJ ADJ

15 1.5V

18 1.8V

25 2.5V

285 2.85V

33 3.3V

5 5V Page

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4 BLOCK DIAGRAM(功能框图) MAXIMUM RATINGS (Ta=25℃) 最大额定值 (Note 1) Rating 额定值 Characteristic 特性参数 Symbol 符号 Min 最小 Max 最大 Unit 单位 Input Voltage 输入电压 VIN

13 V Operating Junction Temperature结温 TJ

0 150 °C Storage Temperature Range储存温度 TSTG -65

150 °C Lead Temperature 焊接温度(soldering,

10 seconds) -

260 °C Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. POWER DISSIPATION TABLE 耗散功率 Package θJA (°C /W ) Derating factor ( mW/ °C)TA≥25 °C TA≤25 °C Power rating (mW) TA=70 °C Power rating (mW) TA=

85 °C Power rating (mW) SOT-223

136 7.35

919 588

478 Note :θJA : Thermal Resistance-Junction to Ambient, DF : Derating factor, Po: Power consumption. Junction Temperature Calculation: TJ = TA + (PD*θJA), Po = DF*(TJ -TA) The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow. RECOMMENDED OPERATING CONDITIONS 推荐使用条件 Symbol 符号 Min 最小 Max 最大 Unit 单位 Input Voltage 输入电压 VIN 2.7

12 V Load Current (with adequate heat sinking) 负载电流 IO

5 - mA Input Capacitor VIN to GND 输入电容 1.0 - μF Output Capacitor with ESR of 10? max 输出电容 4.7 - μF Junction temperature 结温 TJ -