MC34063

HUAXUANYANG HXY ELECTRONICS CO.,LTD MC34063 1.3A Step-Up/Down/Inverting Switching Regulators 概述 ＭＣ３４０６３ 为一单片 DC-DC 变换集 成电路，内含温度补偿 的参考电压源 （1.25V）、比较器、能有效限制电流及控 制工作周 期的振荡器，驱动器及大电流输 出开关管等,外配少量元件，就能 组成升 压、降压及电压反转型 DC-DC 变换器。 Pin 1 SOP-8 该电路采用 DIP8 和 SOP8 封装形式。 主要特点  工作电压范围宽 3.0V~４0V       静态电流小 管脚排列图 具有输出电流限制功能,输出电流保护 功能 输出开关极限电流达 1.3A 输出电压可调 工作频率可达 100kHz  内部基准参考电压精度 2% 引脚排列 ＭＣ３４０６３ 功能框图 Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY MC34063 ELECTRONICS CO.,LTD 1.3A Step-Up/Down/Inverting Switching Regulators 引出端功能说明 引出端序号 功 能 符号 引出端序号 功 能 符号 1 开关管集电极 SC 5 比较器反向端输入 FB 2 开关管发射极 SE 6 输入电压 VCC 3 定 时 电 容 CT 7 检 Ipk GND 8 地 4 测 驱动管集电极 DC 极限值 参数名称 符号 电源电压 Vcc 比较器输入电压范围 VIR 数 值 最小 单位 最大 -0.3 40 V 40 V 输出管集电极电压 Vc(switch) 40 V 输出管发射极电压(VPIN1=32V) VE(switch) 40 V 输出管集电极与发射极间的电压 VCE(switch) 40 V 驱动管集电极电压 Vc(driver) 40 V 驱动管集电极电流 Ic(driver) 100 mA 输出电流 ISW 1.3 A 功耗 PD 1.25 W 工作环境温度 TA 0 +70 ℃ 贮存温度 Tstg -65 +150 ℃ 电特性 (Vcc=5.0V;TA=0℃~70℃,除非另外规定) 特性条件 符号 规范值 最小 典型 最大 单 位 振荡器部分 振荡频率(VPIN5=0V,CT=1.0F,TA=25℃) fosc 24 33 42 KHz 充电电流(VCC=5.0V~32V,TA=25℃) Ichg 24 33 42 uA 放电电流(VCC=5.0V~32V,TA=25℃) Idischg 140 200 260 uA 放电与充电电流之比(VPIN7=VCC,TA=25℃) Idischg/Ichg 5.2 6.2 7.5 -- VIPK 250 300 350 mV 饱和压降(ISW=1.0A,PIN1,8连接) VCE(sat) -- 1.0 1.3 V 饱和压降(ISW=1.0A,RPIN8=82到VCC) VCE(sat) -- 0.45 0.7 V hfe 50 120 -- -- -- 0.01 100 电流限制器电压灵敏度(Ichg=Idischg,TA=25℃) 输出部分: 直流放大倍数(ISW=1A,VCE=5V,TA=25℃) 集电极漏电流(VCE=30V) Shenzhen HuaXuanYang Electronics CO.,LTD IC(off) uA www.hxymos.com HUAXUANYANG HXY MC34063 ELECTRONICS CO.,LTD 1.3A Step-Up/Down/Inverting Switching Regulators 特性条件 符号 规范值 单 位 最小 典型 最大 1.23 1.25 1.27 1.21 -- 1.29 IIB -- -40 -400 nA Regline -- 1.4 5.0 mV ICC ---- 2.5 4.0 mA 比较器部分: 阈值电压(TA=25℃) Vth (TA=0~70℃) 输入偏置电流(VIN=0V) 阈值电压线性调整率(VCC=3.0~30V) V 整体部分: 电源电流(VCC=5.0V~30V,CT=1.0nF, VPIN7=Vcc,VPIN5>Vth ,VPIN2=GND,其余悬空) 应用电路图 ＭＣ３４０６３ 作反转式DC-DC 变换器 如图所示, 当加接LC 滤波器后,能进一步减小电压纹波及噪声,特性见下表 测试条件 参数 结果 线性调整率 VIN=4.5~6.0V,Io=100mA 3.0mV=0.012% 负载调整率 VIN=5.0V,Io=10~100mA 0.022V=+0.09% 输出纹波 VIN=5.0V,Io=100mA 500mVpp 电路限制电流 VIN=5.0V,RL=0.1 910mA 效率 VIN=5.0V,Io=100mA 64.5% 输出纹波 2+LC滤波 VIN=5.0V,Io=100mA+LC滤波 70mVpp Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY ELECTRONICS CO.,LTD MC34063 1.3A Step-Up/Down/Inverting Switching Regulators 特性曲线 Shenzhen HuaXuanYang Electronics CO.,LTD www.hxymos.com HUAXUANYANG HXY MC34063 ELECTRONICS CO.,LTD 1.3A Step-Up/Down/Inverting Switching Regulators SOP-8 Package Outline Dimensions Symbol Dimensions In Millimeters A A1 A2 b c D e E E1 L θ Shenzhen HuaXuanYang Electronics CO.,LTD Min 1.350 Max 1.750 Dimensions In Inches Min 0.053 Max 0.069 0.100 0.250 1.350 1.550 0.330 0.510 0.170 0.250 4.800 5.000 1.270（BSC） 0.004 0.010 0.053 0.061 0.013 0.020 0.007 0.010 0.189 0.197 0.050（BSC） 5.800 3.800 0.400 6.200 4.000 1.270 0.228 0.150 0.016 0.244 0.157 0.050 0° 8° 0° 8° www.hxymos.com HUAXUANYANG HXY MC34063 ELECTRONICS CO.,LTD 1.3A Step-Up/Down/Inverting Switching Regulators Attention ■ Any and all HUA XUAN YANG ELECTRONICS products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. 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