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MAX5023TASA+

P1-P3P4-P6P7-P9P10-P12P13-P13
MAX5023/MAX5024
65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with µP Reset and Watchdog Timer
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
IN
= +14V, C
IN
= 10µF, C
OUT
= 15µF, V
EN
= +2.4V, V
OUT
= +5V, SET = GND, T
A
= +25°C, unless otherwise specified.)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX5023 toc01
V
IN
(V)
V
OUT
(V)
605545 5015 20 25 30 35 405 10
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
065
I
OUT
= 0mA
NO-LOAD GROUND CURRENT
vs. TEMPERATURE
MAX5023 toc02
TEMPERATURE (
°
C)
I
GND
(µA)
1109565 80-10 5 20 35 50-25
10
20
30
40
50
60
70
80
90
100
0
-40 125
V
IN
= +6.5V
V
IN
= +14V
V
IN
= +65V
8
11
14
17
20
5
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX5023 toc03
TEMPERATURE (
°
C)
I
SHDN
(µA)
1109565 80-10 5 20 35 50-25-40 125
4.80
4.85
4.90
4.95
5.00
5.05
5.10
5.15
5.20
5.25
4.75
OUTPUT VOLTAGE
vs. TEMPERATURE
MAX5023 toc04
TEMPERATURE (
°
C)
V
OUT
(V)
1109565 80-10 5 20 35 50-25-40 125
I
OUT
= 1mA
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
0
GROUND CURRENT
vs. TEMPERATURE
MAX5023 toc05
TEMPERATURE (
°
C)
I
GND
(mA)
1109565 80-10 5 20 35 50-25-40 125
I
LOAD
= 50mA
I
LOAD
= 150mA
I
LOAD
= 100mA
V
OUT
(V)
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
4.5
OUTPUT VOLTAGE
vs. LOAD CURRENT AND TEMPERATURE
MAX5023 toc06
TEMPERATURE (
°
C)
1109565 80-10 5 20 35 50-25-40 125
I
LOAD
= 50mA
I
LOAD
= 150mA
I
LOAD
= 100mA
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX5023 toc07
I
LOAD
(mA)
DROPOUT VOLTAGE (V)
13011070 905030
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
1.35
1.50
0
10 150
V
OUT
= 5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX5023 toc08
FREQUENCY (kHz)
PSRR (dB)
100101
-70
-60
-50
-40
-30
-20
-10
0
-80
0.1 1000
C
OUT
= 15µF
I
OUT
= 10mA
LOAD-TRANSIENT RESPONSE
MAX5023 toc09
200µs/div
V
OUT
100mV/div
I
OUT
100mA/div
MAX5023/MAX5024
65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with µP Reset and Watchdog Timer
_______________________________________________________________________________________ 5
INPUT VOLTAGE STEP RESPONSE
MAX5023 toc10
200µs/div
V
OUT
1V/div
5V
65V
6.5V
V
IN
20V/div
V
EN
= V
IN
I
OUT
= 1mA
STARTUP RESPONSE
MAX5023 toc11
200µs/div
V
OUT
1V/div
5V
65V
0V
0V
V
IN
50V/div
V
EN
= V
IN
I
OUT
= 1mA
ENABLE STARTUP RESPONSE
(V
IN
= +14V)
MAX5023 toc12
100µs/div
V
EN
1V/div
V
OUT
2V/div
I
OUT
= 0mA
ENABLE STARTUP RESPONSE (V
IN
= +14V)
MAX5023 toc13
100µs/div
V
EN
1V/div
V
OUT
2V/div
I
OUT
= 150mA
ENABLE STARTUP RESPONSE (V
IN
= +65V)
MAX5023 toc14
100µs/div
V
EN
1V/div
V
OUT
2V/div
I
OUT
= 0mA
ENABLE STARTUP RESPONSE (V
IN
= +65V)
MAX5023 toc15
100µs/div
V
EN
1V/div
V
OUT
2V/div
I
OUT
= 150mA
Typical Operating Characteristics (continued)
(V
IN
= +14V, C
IN
= 10µF, C
OUT
= 15µF, V
EN
= +2.4V, V
OUT
= +5V, SET = GND, T
A
= +25°C, unless otherwise specified.)
SHUTDOWN RESPONSE
MAX5023 toc16
40ms/div
V
EN
1V/div
V
OUT
2V/div
I
OUT
= 1mA
ENABLE AND HOLD TIMING
MAX5023 toc17
200ms/div
V
EN
5V/div
V
OUT
5V/div
V
HOLD
5V/div
MAX5023/MAX5024
65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with µP Reset and Watchdog Timer
6 _______________________________________________________________________________________
0
10
5
20
15
25
30
47 5453 56 575548 5251 58 60 6159 80
GROUND-CURRENT DISTRIBUTION
(T
A
= +40°C)
MAX5023toc18
I
GND
(µA)
NUMBER OF UNITS
Typical Operating Characteristics (continued)
(V
IN
= +14V, C
IN
= 10µF, C
OUT
= 15µF, V
EN
= +2.4V, V
OUT
= +5V, SET = GND, T
A
= +25°C, unless otherwise specified.)
0
10
5
20
15
25
30
45 5958 61 626053 5756 63 65 8964
GROUND-CURRENT DISTRIBUTION
(T
A
= +125°C)
MAX5023toc19
I
GND
(µA)
NUMBER OF UNITS
Pin Description
PIN
MAX5023
MAX5024
NAME FUNCTION
11IN
Regulator Input. Supply voltage ranges from +6.5V to +65V. Bypass with a 10µF capacitor to
GND.
22EN
Enable Input. Force EN high to turn on the regulator. Pull EN low and force HOLD high (or
open circuit) to place the device in shutdown mode. Internally connected to ground through a
5MΩ resistor.
33GND
Ground. GND also functions as a heatsink. Solder to large pads or the circuit-board ground
plane to maximize thermal dissipation.
44RESET
Active-Low Open-Drain Reset Output. RESET remains low while V
OUT
is below the reset
threshold or when WDI is not pulsed within 1.6s. RESET remains low for the duration of the
reset timeout period after the reset conditions are terminated.
55HOLD
Regulator Hold Input. When HOLD is forced low, the regulator stores the on state of the
output allowing the regulator to function even if EN is pulled low. To shutdown the regulator,
release HOLD after EN is pulled low. If HOLD is unused, either float HOLD or connect to OUT.
Internally connected to OUT through a 4µA pullup current source (see Table 1, Truth Table).
66N.C. No Connection. Not internally connected.
7—WDI
Watchdog Timer Input (MAX5023 only). The watchdog timer asserts a reset if WDI does not
transition within the 1.6s watchdog timeout period. WDI cannot be disabled.
88OUT
Regulator Output. Fixed (+3.3V or +5V) or adjustable (+2.5V to +11V). Bypass with a 15µF
capacitor (min).
—7SET
Feedback Input for Setting the Output Voltage. Connect to GND to set the output voltage to
the preset fixed value (+3.3V or +5V). Connect to an external resistor-divider network for
adjustable output operation (MAX5024 only).
EP EP PAD Exposed Pad. Connect pad to GND.
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX5023TASA+

Mfr. #:
Buy MAX5023TASA+
Manufacturer:
Maxim Integrated
Description:
Linear Voltage Regulators 65V Low-Q w/uP Reset & Watchdog Timer
Lifecycle:
New from this manufacturer.
Delivery:
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