Rainbow Electronics MAX6796 - Manual (Page 5)

MAX6791–MAX6796
High-Voltage, Micropower, Single/Dual Linear
Regulators with Supervisory Functions
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ELECTRICAL CHARACTERISTICS (continued)
(V IN = 14V, C IN = 1µF, C OUT = 10µF, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = T J = +25°C.)
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET OUTPUT
L 4.500 4.625 4.750
M 4.250 4.375 4.500
T 2.970 3.053 3.135
S 2.805 2.888 2.970
Z 2.250 2.313 2.375
Y 2.125 2.188 2.250
W 1.620 1.665 1.710
Reset Threshold (Preset Output
Voltage)
SET/SET1 = GND
V 1.530 1.575 1.620
V
L/T/Z/W
0.90 x
V OUT
0.925 x
V OUT
0.95 x
V OUT Reset Threshold (Adjustable
Output Voltage)
M/S/Y/V
0.85 x
V OUT
0.875 x
V OUT
0.90 x
V OUT
V
OUT to Reset Delay V OUT1 /V OUT falling 35 µs
D0 35 µs
D1 2.187 3.125 4.063
D2 8.75 12.5 16.25
D3 35 50 65
Reset Timeout Period
(CSRT = OUT/OUT1)
t RP V OUT1 /V OUT rising
D4 140 200 260
ms
CSRT Ramp Current 800 1000 1250 nA
CSRT Ramp Threshold 1.185 1.218 1.255 V
WATCHDOG INPUT
CSWT = OUT/OUT1 (fixed) 280.0 400.0 520.0
Normal Watchdog Timeout Period t WD2
CSWT = 1500pF (adjustable) 170 236.2 290
ms
CSWT = OUT/OUT1 (fixed) 37.5 50.0 62.5 Fast Watchdog Timeout Period
SET Ratio = 8
t WD1
CSWT = 1500pF (adjustable) 21.95 29.52 36.90
ms
CSWT = OUT/OUT1 (fixed) 18.75 25.0 31.25 Fast Watchdog Timeout Period
SET Ratio = 16
t WD1
CSWT = 1500pF (adjustable) 10.80 14.76 18.45
ms
CSWT = OUT/OUT1 (fixed) 4.68 6.25 7.81 Fast Watchdog Timeout Period
SET Ratio = 64
t WD1
CSWT = 1500pF (adjustable) 2.52 3.69 4.62
ms
Fast Watchdog Minimum Period t WD0 2000 ns
CSWT Ramp Current Adjustable timeout 800 1000 1250 nA
CSWT Ramp Threshold Adjustable timeout 1.185 1.218 1.255 V
Undercurrent Threshold for
Watchdog Enable
7.0 10 13.8 mA
Undercurrent Threshold for
Watchdog Disable
3 5 7 mA