BA6790FP

厂商：
ROHM(罗姆)
封装：
描述：
BA6790FP - 4-channel BTL driver for CD players - Rohm

数据手册：

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详情介绍
数据手册
价格&库存

BA6790FP 数据手册

Optical disc ICs 4-channel BTL driver for CD players BA6790FP / BA6791FP The BA6790FP and BA6791FP are 4-channel BTL drivers for CD player actuators and motors. These ICs have internal 5 V regulators and general purpose operational amplifiers, and are mounted to a 28-pin HSOP package, allowing for the miniaturization of applications. FApplications CD players and portable CD FFeatures 1) 4-channel BTL driver. 2) HSOP 28-pin package allows for miniaturization of applications. 3) Wide dynamic range. (typically 5.4V when VCC = 8V and RL = 8Ω) 4) Internal thermal shutdown circuit. 5) Gain is adjustable with a single attached resistor. 6) Internal 5V regulator. (requires attached PNP transistor) 7) Internal general purpose operational amplifier. FBlock diagram 348 Optical disc ICs FPin descriptions BA6790FP/BA6791FP FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions 349 Optical disc ICs BA6790FP/BA6791FP FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8Ω) 350 Optical disc ICs FMeasurement circuit BA6790FP/BA6791FP 351 Optical disc ICs FMeasurement circuit switch table BA6790FP/BA6791FP FInput / output circuits 352 Optical disc ICs BA6790FP/BA6791FP FApplication example 353 Optical disc ICs FThermal derating curve BA6790FP/BA6791FP FOperation notes (1) The BA6790FP and BA6791FP have an internal thermal shutdown circuit. Output current is muted when the chip temperature exceeds 175_C (typically) and restored when the chip temperature falls to 150_C (typically). (2) If the mute pin (pin 7) voltage is opened or lowered below 0.5V, the output current will be muted. Pin 7 should be pulled up above 2.0V during normal use. (3) The bias pin (pin 23) is muted when lowered below 1.4V (typically). Make sure it stays above 1.6V during normal use. (4) Muting occurs during thermal shutdown, mute-on operations or a drop in the bias pin voltage. In each case, only the drivers are muted. During muting, the output pins remain at the internal bias voltage, roughly (VCC / 2). (5) Be sure to connect the IC to a 0.1µF bypass capacitor to the power supply, at the base of the IC. (6) The radiating fin is connected to the packages internal GND, but should also be connected to an external ground. (7) The capacitor between regulator output (pin 6) and GND also serves to prevent oscillation of the IC, so select one with good temperature characteristics. FExternal dimensions (Units: mm) 354

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BA6790FP

物料型号： - BA6790FP和BA6791FP是4通道BTL驱动器，用于CD播放器的执行器和马达。

器件简介： - 这些IC内部包含5V稳压器和通用运算放大器，并且安装在28引脚的HSOP封装中，有助于应用的小型化。

引脚分配： - 1号引脚：VO1(-)，驱动通道1负输出 - 2号引脚：VO1(+)，驱动通道1正输出 - 3号引脚：VIN1，驱动通道1输入 - 4号引脚：VIN1'，驱动通道1输入，增益调整引脚 - 5号引脚：REG-B，连接到外部晶体管基极 - 6号引脚：REG OUT，恒定电压输出，连接到外部晶体管集电极 - 7号引脚：MUTE，静音控制引脚 - 8号引脚：GND，地线 - 9号引脚：VIN2'，驱动通道2输入，增益调整引脚 - 10号引脚：VIN2，驱动通道2输入 - 11号引脚：VO2(+)，驱动通道2正输出 - 12号引脚：VO2(-)，驱动通道2负输出 - 13号引脚：GND，基底地线 - 14号引脚：OP OUT，运算放大器输出 - 15号引脚：OP IN(-)，运算放大器输入，负输入 - 16号引脚：OP IN(+)，运算放大器输入，正输入 - 17号引脚：VO3(-)，驱动通道3负输出 - 18号引脚：VO3(+)，驱动通道3正输出 - 19号引脚：VIN3，驱动通道3输入 - 20号引脚：VIN3'，驱动通道3增益调整引脚 - 21号引脚：Vcc，电源供应 - 22号引脚：Vcc，电源供应 - 23号引脚：BIAS IN，偏置放大器输入 - 24号引脚：VIN4，驱动通道4增益调整引脚 - 25号引脚：VIN4，驱动通道4输入 - 26号引脚：VO4(+)，驱动通道4正输出 - 27号引脚：VO4(-)，驱动通道4负输出 - 28号引脚：GND，基底地线

参数特性： - 电源电压：Vcc，18V - 功耗：Pd，1.7W - 工作温度：Topr，-35~+85°C - 存储温度：Tstg，-55~+150°C

功能详解： - 4通道BTL驱动器 - HSOP 28引脚封装，有助于应用的小型化 - 宽动态范围（典型值5.4V，当Vcc=8V且RL=8Ω） - 内部热关闭电路 - 增益可通过单个附加电阻调整 - 内部5V稳压器（需要附加PNP晶体管） - 内部通用运算放大器

应用信息： - 用于CD播放器和便携式CD

封装信息： - 28引脚HSOP封装

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