65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with µP Reset and Watchdog Timer
ELECTRICAL CHARACTERISTICS (continued)
(V = +14V, I
= 1mA, C = 10µF, C
= 15µF, V = +2.4V, HOLD = open, 10kΩ from RESET to OUT, T = -40°C to +125°C,
IN
OUT
IN
OUT EN A
unless otherwise noted. Typical specifications are at T = +25°C.) (Note 1)
A
PARAMETER
Load Regulation
SYMBOL
CONDITIONS
= 1mA to 150mA
MIN
TYP
MAX
UNITS
∆V
∆I
/
OUT
I
I
1
mV/mA
OUT
OUT
OUT
= 10mA, f = 100Hz, 500mV
= +5V
,
P-P
Power-Supply Rejection Ratio
Short-Circuit Current
PSRR
54
300
150
20
dB
mA
°C
V
OUT
I
V
= +8V
IN
175
SC
J(SHDN)
Thermal-Shutdown
Temperature
T
Thermal-Shutdown Hysteresis
∆T
°C
J(SHDN)
RESET CIRCUIT
MAX502_L, SET = GND
MAX502_M, SET = GND
MAX502_T, SET = GND
MAX502_S, SET = GND
4.50
4.25
4.625
4.375
3.052
2.887
4.75
4.50
2.970
2.805
3.135
2.970
Reset Threshold
V
V
TH
MAX5024L/T, SET = Divider
(Figure 1) (Note 3)
0.925 x
V
OUT
MAX5024M/S, SET = Divider
(Figure 1) (Note 3)
0.875 x
V
OUT
Reset Timeout Period
t
140
200
5
260
ms
µs
RP
V
to Reset Delay
t
V
V
falling
OUT
RD
OUT
OUT
≥ +1.0V, I
= 50µA,
SINK
0.3
0.3
0.4
1.0
RESET asserted
Open-Drain RESET Output
Voltage (Note 4)
V
≥ +2.85V, I
= 1.2mA,
= 3.2mA,
OUT
SINK
V
V
OL
RESET asserted
V
≥ +4.25V, I
OUT
SINK
RESET asserted
Open-Drain RESET Output-
Leakage Current
I
t
RESET not asserted, V
= +11V
RESET
µA
LKG
WATCHDOG FUNCTION
Watchdog Timeout Period
WDI Pulse Width
t
1.12
50
1.6
2.08
0.4
+1
s
WD
(Note 5)
ns
WDI
V
IL
WDI Input Voltage
WDI Input Current
V
V
2.4
-1
IH
I
WDI = GND
µA
WDI
Note 1: Limits at -40°C are guaranteed by characterization and not production tested.
Note 2: Dropout voltage is defined as V - V when V is 100mV below the value of V
for V = V + 3V.
OUT
IN
OUT
OUT
OUT
IN
Note 3: V
= V
(1 + R1 / R2) = 1.248V (1 + R1 / R2).
OUT
SET
Note 4: RESET is guaranteed to be in the correct logic state for V
Note 5: Guaranteed by design, not production tested.
> +1V.
OUT
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
