TPS61170-Q1 是一款集成 1.2A/40V 功率金属氧化物半导体场效应晶体管 (MOSFET) 的单片高压开关稳压器。该器件可配置为多种标准开关稳压器拓扑,包括升压和 SEPIC。该器件通过其宽输入电压范围 支持 需要由多节电池或经稳压的 5V/12V 电源轨提供输电压的应用。
TPS61170-Q1 的工作开关频率为 1.2MHz,允许使用薄型电感和低值陶瓷输入和输出电容。外部回路补偿组件支持用户灵活优化回路补偿和瞬态响应。此器件内置保护 特性,例如逐脉冲过流限制、软启动和热关断。
FB 引脚可调节为基准电压
1.229V。该基准电压可使用通过 CTRL 引脚连接的单线制数字接口(EasyScale™协议)进行降低。另外,也可将一路脉宽调制 (PWM) 信号施加于 CTRL 引脚。该信号的占空比可按比例降低反馈基准电压。
TPS61170-Q1 采用 6 引脚 2mm ×
2mm SON 封装,适用于紧凑型电源解决方案。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
TPS61170-Q1 | SON (6) | 2.00mm x 2.00mm |
Changes from * Revision (September 2011) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
COMP | 2 | O | Output of the transconductance error amplifier. Connect an external RC network to this pin to compensate the regulator. |
CTRL | 5 | I | Control pin of the boost regulator. CTRL is a multi-functional pin which can be used to enable the device and control the feedback voltage with a PWM signal or for digital communications. |
FB | 1 | I | Feedback pin for current. Connect to the center tap of a resistor divider to program the output voltage. |
GND | 3 | O | Ground |
SW | 4 | I | This is the switching node of the IC. Connect SW to the switched side of the inductor. |
VIN | 6 | I | The input supply pin for the IC. Connect VIN to a supply voltage between 3 V and 18 V. |
Thermal Pad | — | The thermal pad should be soldered to the analog ground plane to avoid thermal issue. If possible, use thermal vias to connect to ground plane for ideal power dissipation. |