MAX14575A Datasheet, PDF (3/11 Pages) Maxim Integrated Products – 250mA to 2.5A Adjustable Current-Limit Switches

MAX14575A/MAX14575AL/
MAX14575B/MAX14575C
250mA to 2.5A Adjustable Current-Limit Switches
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +2.3V to +5.5V and TA = -40NC to +85NC, unless otherwise noted. Typical values are at VIN = +3.3V, CIN = 1FF, COUT = 1FF,
RSETI = 100kI, TA = +25°C.) (Note 2)
PARAMETER
EN, EN INPUT
EN, EN Input Leakage
EN, EN Input Logic-High Voltage
EN, EN Input Logic-Low Voltage
FLAG OUTPUT
FLAG Output Logic-Low Voltage
FLAG Output Leakage Current
TIMING CHARACTERISTICS
SYMBOL
ILEAK
VIH
VIL
CONDITIONS
EN, EN = IN or GND
ISINK = 1mA
VIN = VFLAG = 5.5V, FLAG deasserted
MIN TYP MAX UNITS
-1
+1
FA
1.6
V
0.4
V
0.4
V
1
FA
Turn-On Time
tSS
Time from ENABLE signal to VOUT = 90%
of VIN, Figure 1
600
Fs
Turn-Off Time
tOFF
Time from DISABLE signal to VOUT = 10%
of VIN, RL = 1kI, COUT = 0, Figure 1
100
Fs
Current-Limit Reaction Time
tLIM Output high and then short circuit applied
3
Fs
Blanking Time
Retry Time
THERMAL PROTECTION
tBLANK Figures 2 and 3 (Note 3)
10
15
25
ms
tRETRY MAX14575A/MAX14575AL Figure 2 (Note 3) 320
500
875
ms
Thermal Shutdown
Thermal Shutdown Hysteresis
+160
NC
20
NC
Note 2: All devices are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by
design; not production tested.
Note 3: Blanking time and retry time are generated by the same internal oscillator. The ratio of
t _RETRY
is a constant value of 32.
t _BLANK
EN(EN)*
VOUT
tSS
90% VIN
tOFF
10% VIN
*() THE POLARITY OF THE SIGNAL IS REVERSED FOR THE MAX14575AL ONLY.
Figure 1. Timing Diagram for Measuring Turn-On Time (tSS) and Turn-Off Time (tOFF).
Maxim Integrated
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