ULN2802 ULN2803 ULN2804A 8个NPN达林顿晶体管,连接在阵列非常适合逻辑接口电平数字电路(例如TTL,CMOS或PMOS上/ NMOS)和较高的电流/电压,如电灯,电磁阀,继电器,打印锤或其他类似的负载,广泛的使用范围:计算机,工业和消费应用。所有设备功能由集电极输出和钳位二极管瞬态抑制。 该ULN2803是专为符合标准TTL,而制造ULN2804适合6至15V的高级别CMOS或PMOS上。该电路为反向输出型,即输入低电平电压,输出端才能导通工作。
图一 引脚图
1-8引脚:输入端
11-18引脚:输出端
9引脚:地端
10引脚:电源+
图二 ULN2803内部电路图 (1/8单元) 图二 ULN2804内部电路图 (1/8单元)
MAXIMUM RATINGS (TA = 25℃ and rating apply to any one device in the
package, unless otherwise noted.)最大额定值
Rating 参数 | Symbol 符号 | Value 数值 | Unit 单位 | |
Outputvoltage 输出电压 | VO | 50 | V | |
Inputvoltage (Except ULN2801) 输入电压(除ULN2801 ) | VI | 30 | V | |
Collector Current – Continuous 集电极电流-连续 | IC | 500 | mA | |
Base Current – Continuous 基极电流-连续 | IB | 25 | mA | |
Operating Ambient Temperature Range 操作环境温度范围 | TA | 0 to +70 | ℃ | |
Storage Temperature Range 储存温度范围 | Tstg | – | 55 to +150 | ℃ |
Junction Temperature 结温 | TJ | 125 | ℃ |
订购信息
Device |
Characteristics |
||
Input Compatibility 输入兼容性 | VCE(Max)/IC(Max) | Operating Temperature Range工作温度范围 | |
ULN2803A ULN2804A | TTL,5.0v CMOS 6to15v CMOS,PMOS | 50v/500mA | TA=0 to + 70℃ |
ELECTRICAL CHARACTERISTICS (TA = 25℃, unless otherwise noted)电气特性:
Characteristic 参数 | 符号 | 最小 | 典型 | 最大 | Unit单位 | |
Output Leakage Current (Figure 1)输出泄漏电流(图1 ) | μA | |||||
(VO = 50v, TA = +70℃) | 所有类型 | ICEX | 100 | |||
(VO = 50v, TA = +25℃) | 所有类型 | 50 | ||||
(VO = 50v, TA = +70℃,vI = 6.0V) | ULN2802 | 500 | ||||
(VO = 50v, TA = +70℃,vI = 1.0V) | ULN2804 | 500 | ||||
Collector–Emitter Saturationvoltage (Figure 2)集电极发射极饱和电压(图2 ) | V | |||||
(IC = 350mA, IB = 500μA) | 所有类型 | VCE(sat) | 1.1 | 1.6 | ||
(IC = 200mA, IB = 350μA) | 所有类型 | 0.95 | 1.3 | |||
(IC = 100mA, IB = 250μA) | 所有类型 | 0.85 | 1.1 | |||
Input Current – On Condition (Figure 4) 输入电流-状态(图4 ) | mA | |||||
(VI = 17v)ULN2802 | II(on) | 0.82 | 1.25 | |||
(VI = 3.85v) ULN2803 | 0.93 | 1.35 | ||||
(VI = 5.0v) ULN2804 | 0.35 | 0.5 | ||||
(VI = 12v)ULN2804 | 1.0 | 1.45 | ||||
Inputvoltage – On Condition (Figure 5) 输入电压-状态(图5 ) | V | |||||
(VCE = 2.0v, IC = 300mA) ULN2802 | VI(on) | 13 | ||||
(VCE = 2.0v, IC = 200mA) ULN2803 | 2.4 | |||||
(VCE = 2.0v, IC = 250mA) ULN2803 | 2.7 | |||||
(VCE = 2.0v, IC = 300mA) ULN2803 | 3.0 | |||||
(VCE = 2.0v, IC = 125mA) ULN2804 | 5.0 | |||||
(VCE = 2.0v, IC = 200mA) ULN2804 | 6.0 | |||||
(VCE = 2.0v, IC = 275mA) ULN2804 | 7.0 | |||||
(VCE = 2.0v, IC = 350mA) ULN2804 | 8.0 | |||||
Input Current–Off Condition 输入电流开关条件(Figure3)(IC= 500mA,TA=+70℃) | 所有类型 | II(off) | 50 | 100 | – | μA |
DC Current Gain (Figure 2)直流电流增益(VCE=2.0v, IC=350mA) | ULN2801 | hFE | 1000 | – | – | – |
Input Capacitance 输入电容 | CI | – | 15 | 25 | pF | |
Turn–On Delay Time 开启延迟时间(50% EI to 50% EO) | ton | – | 0.25 | 1.0 | μs | |
Turn–Off Delay Time 关断延迟时间(50% EI to 50% EO) | toff | – | 0.25 | 1.0 | μs | |
Clamp Diode Leakage Current (Figure 6)钳位二极管漏电流(VR=50v) | TA = +25℃ | IR | – | – | 50 | μA |
TA = +70℃ | 100 | |||||
Clamp Diode Forwardvoltage(Figure 7)钳位二极管正向电压(IF=350mA) | VF | – | 1.5 | 2.0 | V |
测试图:
图1 图2 |
图3 图4 |
图5 图6 图7 |
图四 封装图
应用电路图: |
图五 步进电机驱动器 |
图六 二相步进电机驱动器
图七 LED发光二极管驱动器电路