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MAX4826–MAX4831
50mA/100mA Current-Limit Switches
with NO-LOAD Flag in µDFN
General Description
Features
The MAX4826–MAX4831 family of switches has internal
current limiting to prevent host devices from being
damaged due to faulty load conditions. These analog
switches have a low 0.7Ω on-resistance and operate
from a +2.3V to +5.5V input voltage range. These
devices are available with guaranteed 50mA and
100mA current limits, making them ideal for load-
switching applications. In addition to the current-limit
fault flag (FFLG), an open-drain no-load flag indicator
(NOLD) notifies the system when the current through
the switch is less than 10mA (MAX4826–MAX4829), or
5mA (MAX4830/MAX4831).
● Guaranteed Current Limit: 50mA, 100mA
● Thermal Shutdown Protection
● Reverse-Current Protection
● 0.7Ω On-Resistance (MAX4826–MAX4831)
● 14ms Guaranteed Blanking Time
● Fault Flag (FFLG)
● No-Load Flag (NOLD)
● 65µA Supply Current
● 8µA Latchoff Current
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If, after this blanking
time, the load current is greater than the current limit,
the MAX4826/MAX4828/MAX4830 enter a latchoff state
where the switch is turned off, and FFLG is issued to
the microprocessor. The switch can be turned on again
by cycling the power or ON.
● 0.01µA Shutdown Current
● +2.3V to +5.5V Supply Range
● Undervoltage Lockout
● Fast Current-Limit Response Time
● 6-Pin µDFN Package (1mm x 1.5mm)
The MAX4827/MAX4829/MAX4831 have an autoretry fea-
ture where the switch turns off after the blanking time, and
then continuously checks to see if the overload condition
is present. The current-limit fault flag (FFLG) is issued and
remains low until after the fault condition is removed. The
switch remains on after the overload condition disappears.
Applications
● GPS Systems
● Cell Phones
● Digital Still Cameras
● PDAs and Palmtop Devices
● MP3 Players
The MAX4826–MAX4831 operate over the extended
-40°C to +85°C temperature range, and are available in a
tiny space-saving, 1mm x 1.5mm, 6-pin µDFN package.
Ordering Information appears at end of data sheet.
Pin Configuration appears at end of data sheet.
19-3672; Rev 2; 5/19