MAX16052_10 Datasheet, PDF (7/12 Pages) Maxim Integrated Products – High-Voltage, Adjustable Sequencing/Supervisory Circuits

High-Voltage, Adjustable
Sequencing/Supervisory Circuits
Typical Operating Characteristics (continued)
(V_CC = 3.3V and T_A = +25°C, unless otherwise noted.)
EN LEAKAGE CURRENT
vs. TEMPERATURE
10
8
VCC = 28V
VCC = VEN = VIN
6
4
2
0
-2
-4
-6
-8
-10
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
EN LEAKAGE CURRENT
vs. IN VOLTAGE
1.0
0.8
VCC = 28V
VCC = VIN
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28
V_EN (V)
Pin Description
PIN
NAME
FUNCTION
Active-High Logic-Enable Input. Drive EN low to immediately deassert the output to its false state (OUT
1
EN
= low) independent of V_IN. With V_IN above V_TH, drive EN high to assert the output to its true state (OUT
= high) after the adjustable delay period. Connect EN to V_CC, if not used.
2
GND Ground
3
IN
High-Impedance Monitor Input. Connect IN to an external resistive divider to set the desired monitor
threshold. The output changes state when V_IN rises above 0.5V and when V_IN falls below 0.495V.
Active-High Sequencer/Monitor Output. Open-drain (MAX16052) or push-pull (MAX16053). OUT is
asserted to its true state (OUT = high) when V_IN is above V_TH and the enable input is in its true state (EN
4
OUT = high) after the capacitor-adjusted delay period. OUT is deasserted to its false state (OUT = low)
immediately after V_IN drops below 0.495V or the enable input is in its false state (EN = low). The
MAX16052 open-drain output requires an external pullup resistor.
5
V_CC
Supply Voltage Input. Connect a 2.25V to 28V supply to V_CC to power the device. For noisy systems,
bypass with a 0.1µF ceramic capacitor to GND.
Capacitor-Adjustable Delay Input. Connect an external capacitor (C_CDELAY) from CDELAY to GND to
6
CDELAY set the IN-to-OUT and EN-to-OUT delay period. For V_IN rising, t_DELAY = (C_CDELAY x 4.0 x 10⁶) + 30µs.
For EN rising, t_PROP = (C_CDELAY x 4.0 x 10⁶) + 14µs.
_______________________________________________________________________________________ 7