TLV803集成电路（IC）的监控器规格书PDF中文资料

TLV803属于集成电路（IC）的监控器。由德州仪器制造生产的TLV803监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。

1 Features

• Precision supply voltage monitor:

2.5 V, 3 V, 3.3 V, 5 V

• Power-on reset generator with a

fixed delay time of 200 ms

• Supply current: 9 μA (typical)

• Temperature range: –40°C to +85°C

• 3-Pin SOT-23 package

• Pin-for-pin compatible with the MAX809

2 Applications

• Factory automation

• Portable and battery-powered equipment

• Set-top boxes

• Servers

• Appliances

• Electricity meters

• Building automation

3 Description

The TLV809 family of supervisory circuits provides

circuit initialization and timing supervision, primarily

for digital signal processors (DSPs) and processorbased

systems. The newer TLV809E device is a pinto-

pin compatible alternative.

During power-on, RESET is asserted when the supply

voltage (VDD) becomes greater than 1.1 V. Thereafter,

the supervisory circuit monitors VDD and keeps

RESET active as long as VDD remains below the

threshold voltage, VIT. An internal timer delays the

return of the output to the inactive state (high) to

ensure proper system reset. The delay time (td(typ) =

200 ms) starts after VDD rises above the threshold

voltage, VIT. When the supply voltage drops below the

VIT threshold voltage, the output becomes active (low)

again. No external components are required. All

devices in this family have a fixed sense-threshold

voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of

2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in

a 3-pin SOT-23 package. The TLV809 devices are

characterized for operation over a temperature range

of –40°C to +85°C.