CST118S summary：
CST118S is widely used in a wireless charging movable toothbrush scheme.
CST118S is a single channel built-in power MOS full bridge driver chip, which has the functions of driving forward, backward, stopping and braking, built-in hysteresis thermal effect overcurrent protection, low on resistance (1.6 Ω), maximum continuous output current up to 1.8A, peak value 2.5A, and no external filtering capacity is required
CST118S provides SOP8 encapsulation
CST118S is recommended
Recommended CST6118，CST6118 is recommended
CST118S characteristic：
CST118S is a single channel built-in power MOS full bridge driver chip
It has the functions of driving forward, backward, stopping and braking
With built-in hysteresis thermal effect overcurrent protection function
Low on resistance (1.6 Ω)
The maximum continuous output current can reach 1.8A, and the peak value is 2.5A
No peripheral filter capacitor is required
CST118S provides SOP8 encapsulation
CST118S application：
Toy motor drive
Adult sex toys
Electric toothbrush
Vehicle mount
Intelligent hand sanitizer
Facial cleaner drive
Remote control car
Application of positive and negative rotation
CST118S absolute maximum rating:
CST118S Recommended working conditions (Ta=25℃)
| 参数 | 符号 | 额定值 | 单位 | |
| 电源电压 | VCC | 5.5 | V | |
| 功耗 | Pd | DIP-8 | 1 | W |
| SOP-8 | 0.96 | W | ||
| 热阻 | θJA | DIP-8 | 125 | ℃/W |
| SOP-8 | 130 | ℃/W | ||
| 工作温度 | Topr | -20~85 | ℃ | |
| 结温 | Tj | 150 | ℃ | |
| 存储温度 | Tstg | -55~150 | ℃ | |
| 手工焊接温度 | 350~370 | ℃ | ||
| 输出电流峰值 | Iop | 2.5 | A | |
| 最大连续输出电流 | Ioc | 1.8 | A | |
Note: The maximum continuous output current depends on the heat dissipation conditions.
CST118S Recommended working conditions (Ta=25℃)
| 参数 | 符号 | 参数值 | 单位 |
| 电源电压 | VCC | 2.2~5.5 | V |
| 控制输入电压 | VIN | 0~VCC | V |
| 正、反转输出电流 | Iout | -600~600 | mA |
CST118S Electrical characteristics (Ta=25℃，VCC=3V，RL=15Ω，Except for special instructions。)
| 参数 | 符号 | 测试条件 | 最小值 | 典型值 | 最大值 | 单位 |
| 整体线路 | ||||||
| 电路关断电流 | ICCST | INA=INB=1 | — | 0 | 10 | uA |
| 工作电流 | ICC | INA=H, INB=L or INA=L, INB=H or INA=H, INB=H |
— | 0.3 | 1 | mA |
| 控制输入 | ||||||
| 高电平输入电压 | VINH | 2.0 | — | — | V | |
| 低电平输入电压 | VINL | — | — | 0.8 | V | |
| 高电平输入电流 | IINH | VIN=3V | — | 5 | 20 | uA |
| 低电平输入电流 | IINL | VIN=0V | -1 | 0 | — | uA |
| 下拉电阻 | RIN | — | 1.5 | — | MΩ | |
| 驱动 | ||||||
| 输出导通阻抗 | RON | Io=±200mA | — | 1 | 1.6 | Ω |
CST118S input/output logic table:
| 输入 | 输出 | 方式 | ||
| INA | INB | OUTA | OUTB | |
| L | L | Hi-Z | Hi-Z | 待命状态 |
| H | L | H | L | 前进 |
| L | H | L | H | 后退 |
| H | H | L | L | 刹车 |
CST118S Precautions for chip use:
1、 The above recommended circuits and parameters are only applicable to ordinary remote control car toys. Please use 118 for other toys and motor drives according to the actual situation.
2、 The continuous current drive capability is affected by package form, VDD, VCC, chip difference, ambient temperature and other factors. The parameters given in the specification are for reference only. In actual use, please consider a certain margin according to the product.
3、 CST118S is designed and manufactured by MOS process and is sensitive to static electricity. It is required to pay attention to anti-static measures in the whole process of packaging, transportation, processing and production.
1、 The above recommended circuits and parameters are only applicable to ordinary remote control car toys. Please use 118 for other toys and motor drives according to the actual situation.
2、 The continuous current drive capability is affected by package form, VDD, VCC, chip difference, ambient temperature and other factors. The parameters given in the specification are for reference only. In actual use, please consider a certain margin according to the product.
3、 CST118S is designed and manufactured by MOS process and is sensitive to static electricity. It is required to pay attention to anti-static measures in the whole process of packaging, transportation, processing and production.
CST118S Typical application circuit diagram:
CST118S Typical application circuit diagram2:
CST118S Application circuit diagram of low voltage and low interference scheme driven by forward and reverse rotation motors:
CST118S Application circuit diagram of strong interference scheme for forward and reverse rotation motor drive:
CST118S Circuit schematic diagram of the practical application scheme of forward and reverse rotation motor drive:
CST118S Pin diagram of forward and reverse rotation motor drive pin:
CST118S Drawing of PCBA driven by forward and reverse rotation motor:
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