The MAX16013/MAX16014 can be configured as an

overvoltage switch controller to turn on/off a load (see

the Typical Application Circuit). When the programmed

overvoltage threshold is tripped, the internal fast com-

parator turns off the external p-channel MOSFET (P2),

from the load. When the monitored voltage goes below

the adjusted overvoltage threshold, the MAX16013

enhances GATE2, reconnecting the load to the power

source (toggle ENABLE on the MAX16014 to reconnect

the load). The MAX16013 can be configured as an

overvoltage limiter switch by connecting the resistive

Overvoltage Limiter section.

Supply Voltage

UVLO voltage the following states are present (Table 1).

Hysteresis

Hysteresis adds noise immunity to the voltage monitors

and prevents oscillation due to repeated triggering

when the monitored voltage is near the threshold trip

voltage. The hysteresis in a comparator creates two trip

shown in Figure 4.

Enable Inputs (EN or

EN)

The MAX16011 offers an active-high enable input (EN),

while the MAX16010 offers both an active-high enable

input (EN) and active-low enable input (EN). For the

MAX16010, drive EN low or EN high to force the output

low. When the device is enabled (EN = high and EN =

low) the state of OUTA and OUTB depends on INA+

and INB- logic states.

Ultra-Small, Overvoltage Protection/

Detection Circuits

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7

MAX16012

IN+

REF

IN-

OUT

R1

R2

GND

OUT

Figure 2. Typical Operating Circuit for the MAX16012

MAX16013

GATE1

SET

GATE2

GND

P2

P1

R1

R2

Figure 3. Overvoltage Limiter Protection

PART

OUTA

OUTB

OUT

GATE2

MAX16010

Low

Low

—

—

MAX16011

Low

Low, LOGIC = low

High, LOGIC = high

——

MAX16012

——

Low

—

MAX16013

MAX16014

——

—

High

0V

Figure 4. Input and Output Waveforms