1 Features

1• 3.3 V to 40 V supply range

• Low quiescent current: 135 μA

• High peak current push-pull output

• Rail-to-rail inputs with phase reversal protection

• Built-In hysteresis: 14mV

• 250ns propagation delay

• Low input offset voltage: 500 μV

• Shutdown with high-z output

• Power-On Reset (POR)

• SOT-23-6 package

2 Applications

• Reverse current protection smart diode controller

• Overvoltage, undervoltage, and overcurrent

detection

• OR-ing MOSFET controller

• MOSFET gate driver

• High voltage oscillators

• System monitoring for:

– Infotainment & cluster

– PLC's

– Servers

– Motor protection & control

3 Description

The TLV1805 high voltage comparator offers the

unique combination of wide supply range, push-pull

output, rail-to-rail inputs, low quiescent current,

shutdown capability and fast output response. All

these features make this comparator well-suited for

applications that require sensing at the positive or

negative voltage rails such as reverse current

protection for a smart diode controller, overcurrent

sensing, and overvoltage protection circuits where the

push-pull output stage is used to drive the gate of a

p-channel or n-channel MOSFET switch.

The high peak current push-pull output stage, which

is unique for high-voltage comparators, offers the

advantage of allowing the output to actively drive the

load to either supply rail with a fast edge rate. This is

especially valuable in applications where a MOSFET

gate needs to be driven high or low quickly in order to

connect or disconnect a host from an unexpected

high voltage supply. Additional features such as low

input offset voltage, low input bias currents and High-

Z shutdown make the TLV1805 flexible enough to

handle a broad range of applications. Power-On reset

prevents false outputs at power-up.

The TLV1805 is in a 6-pin SOT-23 package and is

specified for operation across the extended industrial

temperature range of –40°C to +125°C.