ZHCSYN8C August 2003 – July 2025 UCC2808A-1Q1 , UCC2808A-2Q1
PRODUCTION DATA
| 参数 | 测试条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|
| 振荡器部分 | |||||
| 振荡器频率 | 175 | 194 | 213 | kHz | |
| 振荡器振幅/VDD | (2) | 0.44 | 0.5 | 0.56 | V/V |
| 误差放大器部分 | |||||
| 输入电压 | COMP = 2V | 1.95 | 2 | 2.05 | V |
| 输入偏置电流 | -1 | 1 | µA | ||
| 开放式环路电压增益 | 60 | 80 | dB | ||
| COMP 灌电流 | FB = 2.2 V，COMP = 1 V | 0.3 | 2.5 | mA | |
| COMP 源电流 | FB = 1.3 V，COMP = 3.5 V | -0.2 | -0.5 | mA | |
| PWM 部分 | |||||
| 最大占空比 | 在 OUTA 或 OUTB 处测得 | 48 | 49 | 50 | % |
| 最小占空比 | COMP = 0V | 0 | % | ||
| 电流检测部分 | |||||
| 增益 | (3) | 1.9 | 2.2 | 2.5 | V/V |
| 最大输入信号 | COMP = 5V(4) | 0.45 | 0.5 | 0.55 | V |
| CS 至输出延迟 | COMP = 3.5V，CS 为 0mV 至600mV | 100 | 200 | ns | |
| CS 源电流 | -200 | nA | |||
| CS 灌电流 | CS = 0.5V，RC = 5.5V(5) | 4 | 10 | mA | |
| 过流阈值 | 0.65 | 0.75 | 0.85 | V | |
| COMP 至 CS 失调电压 | CS = 0V | 0.35 | 0.8 | 1.2 | V |
| 输出部分 | |||||
| OUT 低电平 | I = 100mA | 0.5 | 1.1 | V | |
| 输出高电平 | I = −50mA，VDD – OUT | 0.5 | 1 | V | |
| 上升时间 | CL = 1nF | 25 | 60 | ns | |
| 下降时间 | CL = 1nF | 25 | 60 | ns | |
| 欠压锁定部分 | |||||
| 启动阈值 | UCC2808A−1(1) | 11.5 | 12.5 | 13.5 | V |
| UCC2808A−2 | 4.1 | 4.3 | 4.5 | V | |
| 启动后的最小工作电压 | UCC2808A−1 | 7.6 | 8.3 | 9 | V |
| UCC2808A−2 | 3.9 | 4.1 | 4.3 | V | |
| 迟滞 | UCC2808A−1 | 3.5 | 4.2 | 5.1 | V |
| UCC2808A−2 | 0.1 | 0.2 | 0.3 | V | |
| 软启动部分 | |||||
| COMP 上升时间 | FB = 1.8V，从 0.5V 上升至 4V | 3.5 | 20 | ms | |
| 整体部分 | |||||
| 启动电流 | VDD < 启动阈值 | 130 | 260 | µA | |
| 工作电源电流 | FB = 0V，CS = 0V(6)(1) | 1 | 2 | mA | |
| VDD 齐纳分流电压 | IDD = 10mA(7) | 13 | 14 | 15 | V |