MAX14523A_11 Datasheet, PDF (7/11 Pages) Maxim Integrated Products – 250mA to 1.5A, Adjustable Current-Limit Switches

250mA to 1.5A, Adjustable
Current-Limit Switches
Typical Operating Characteristics (continued)
(V_IN = +3.3V, C_IN = 1µF, C_OUT = 1µF, R_SETI = 94.2kΩ, T_A = +25°C, unless otherwise noted.)
CURRENT LIMIT RESPONSE
MAX14523A toc13
SUDDEN SHORT
APPLIED AT OUTPUT
V_OUT
2V/div
CURRENT LIMIT RESPONSE
MAX14523A toc14
R_LOAD = 16.5Ω TO SUDDEN SHORT
APPLIED AT OUTPUT
V_OUT
2V/div
FLAG RESPONSE (OVERLOAD CONDITION)
MAX14523A toc15
R_LOAD = 16.5Ω TO SUDDEN SHORT
APPLIED AT OUTPUT
V_FLAG
2V/div
2μs/div
I_OUT
10A/div
20ms/div
I_OUT
1A/div
20ms/div
I_OUT
1A/div
PIN
MAX14523AL
MAX14523A
MAX14523B
MAX14523C
1, 6
1, 6
2
2
3
3
4
4
5
5
7




7
8
8
—
—
Pin Description
NAME
FUNCTION
N.C.
FLAG
SETI
OUT
IN
ON
ON
GND
EP
No Connection. Not internally connected. Connect N.C. to GND or leave unconnected.
Open-Drain, Overload Indicator Output. FLAG goes low when the overload fault
duration exceeds the blanking time, reverse current is detected, thermal shutdown
mode is active, or SETI is connected to ground.
Overload-Current Limit Adjust. Connect a resistor from SETI to GND to program the
overcurrent limit. If SETI is connected to GND the switch turns off and FLAG is
asserted. If SETI is unconnected the current limit is at 0mA. Do not connect any
capacitance larger than 20pF to SETI.
Switch Output. Bypass OUT with a 1μF capacitor to GND.
Power Input. Bypass IN with a 1μF ceramic capacitor to GND. Use higher
capacitance if necessary to prevent large load transients from pulling down the
supply voltage.
Active-Low, Switch-ON Input. Drive ON low to turn on the switch.
Active-High, Switch-ON Input. Drive ON high to turn on the switch.
Ground
Exposed Pad. Internally connected to GND. For enhanced thermal dissipation,
connect EP to a large copper ground plane. Do not use EP as the sole ground
connection.
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