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MAX5023LASA+ |MAX5023LASAMAXIMN/a36avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5023MASA+ |MAX5023MASAMAXIMN/a212avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5023MASA+T |MAX5023MASATMAXIMN/a80avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5023SASA+MAXIMN/a1400avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024LASA+ |MAX5024LASAMAXIMN/a210avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024LASA+T |MAX5024LASATMAXN/a5000avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024LASA+T |MAX5024LASATMAXIMN/a2501avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024MASA+MAXIMN/a1525avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024SASA+MAIXMN/a1500avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
MAX5024TASA+MAXIMN/a1500avai65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer


MAX5024LASA+T ,65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog TimerElectrical Characteristics(V = +14V, I = 1mA, C = 10μF, C = 15μF, V = +2.4V, HOLD = open, 10kΩ from ..
MAX5024LASA+T ,65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog TimerApplicationsRESET RESET● AutomotiveONOFFEN● IndustrialWDI I/O● Home SecurityI/OHOLD● Fire/Smoke Ala ..
MAX5024MASA ,65V, low-quiescent-current, high-voltage linear regulator with mP reset and watchdog timerApplicationsSelector Guide, insert the desired suffix letter into the blank toAutomotive Fire/Smoke ..
MAX5024MASA+ ,65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog TimerApplicationsRESET RESET● AutomotiveONOFFEN● IndustrialWDI I/O● Home SecurityI/OHOLD● Fire/Smoke Ala ..
MAX5024SASA+ ,65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog TimerMAX5023/MAX5024 65V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchd ..
MAX5024TASA ,65V, low-quiescent-current, high-voltage linear regulator with mP reset and watchdog timerFeaturesThe MAX5023/MAX5024 high-voltage linear regulators Wide Operating Input Voltage Rangeopera ..
MAX9205EAI ,10-Bit Bus LVDS SerializersApplicationsThe MAX9205/MAX9207 transmit serial data at speeds Wide Reference Clock Input Rangeup ..
MAX9205EAI+ ,10-Bit Bus LVDS SerializersApplicationsMAX9207EAI+ -40°C to +85°C 28 SSOP 40 to 66Cellular Phone Base DSLAMs+Denotes a lead(Pb ..
MAX9205EAI+T ,10-Bit Bus LVDS SerializersELECTRICAL CHARACTERISTICS(V = V = +3.0V to +3.6V, R = 27Ω ±1% or 50Ω ±1%, C = 10pF, T = -40°C to + ..
MAX9206EAI ,10-Bit Bus LVDS DeserializersApplicationsMAX9206EAI -40°C to +85°C 16 to 40 28 SSOPCellular Phone Base DSLAMsMAX9208EAI -40°C to ..
MAX9206EAI+ ,10-Bit Bus LVDS DeserializersELECTRICAL CHARACTERISTICS(V = V = +3.0V to +3.6V, differential input voltage |V | = 0.1V to 1.2V, ..
MAX9206EAI+T ,10-Bit Bus LVDS DeserializersApplicationssize.♦ Fast Pseudorandom LockThe MAX9206/MAX9208 receive serial data at450Mbps and 600M ..


MAX5023LASA+-MAX5023MASA+-MAX5023MASA+T-MAX5023SASA+-MAX5024LASA+-MAX5024LASA+T-MAX5024MASA+-MAX5024SASA+-MAX5024TASA+
65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
General Description
The MAX5023/MAX5024 high-voltage linear regulators
operate from a +6.5V to +65V input voltage and deliver up
to 150mA of output current. These devices consume only 60μA of quiescent current with no load and withstand a
-60V reverse-battery voltage at the input. The MAX5023/MAX5024 include an active-low internal microprocessor (μP) reset circuit that asserts when the regulator output drops below the preset output voltage threshold by 7.5% or 12.5%, depending on the device selected. Both devices are available with a fixed +3.3V or +5V output. These devices are short-circuit protected and include thermal shutdown.
In addition to an enable input to turn on or off the regula-tor, the MAX5023/MAX5024 include a HOLD input that allows for the implementation of a self-holding circuit without requiring external components. Setting HOLD low after enabling the regulator, forces the regulator to remain on even if EN is subsequently set low. Releasing HOLD shuts down the regulator.
The MAX5023 includes a watchdog input that monitors a pulse train from the μP and generates reset pulses if the watchdog input remains high or low for a duration longer than the 1.6s watchdog timeout period. The MAX5024 includes a SET input which, when connected to ground, selects a preset output voltage of +3.3V (MAX5024S/MAX5024T) or +5V (MAX5024L/MAX5024M). Set the adjustable output voltage by connecting SET to the regulator’s output through a resistive-divider network.
The MAX5023/MAX5024 operate over the automotive temperature range (-40°C to +125°C) and are available in a thermally enhanced, surface-mount 8-pin SO-EP package.
Applications
●Automotive●Industrial●Home Security●Fire/Smoke Alarms●Telecom/Networking
Features
●Wide Operating Input Voltage Range +6.5V to +65V●Thermally Enhanced 8-Pin SO Package with Exposed Pad Dissipates 1.5W●Guaranteed 150mA Output Current●60μA No-Load Supply Current●-60V Reverse-Battery Protection●Preset +3.3V or +5.0V Output Voltage●Thermal and Short-Circuit Protection●Operate Over -40°C to +125°C Temperature Range●Integrated μP Reset Circuit●Watchdog Timer with 1.6s Timeout Period (MAX5023)●Regulator Enable and Hold Inputs Implement Self-
Holding Circuit●SET Input for Adjustable Output Voltage (MAX5024)
Selector Guide and Ordering Information appear at end of
data sheet.

GND
HOLD
VCC
I/OWDI
RESET
OUT
RESET
15µF
10kΩ
+6.5V TO +65V
I/O
OFF
IGNITION
SWITCH
MAX5023

10µF
Typical Operating Circuit
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
IN to GND ...............................................................-60V to +70VEN to GND .................................................-0.3V to (VIN + 0.3V)
HOLD to GND ........................................-0.3V to (VOUT + 0.3V)SET, WDI, OUT to GND .....................................-0.3V to +13.2V
RESET to GND (Open Drain) ............................-0.3V to +13.2VShort-Circuit Duration (VIN ≤ +14V) ..........................ContinuousMaximum Current to Any Pin (Except IN, OUT) ..............±20mA
Continuous Power Dissipation (TA = +70°C) 8-Pin SO-EP (derate 19.2mW/°C above +70°C) .......1538mWOperating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°CStorage Temperature Range ............................-65°C to +150°CLead Temperature (soldering, 10s) .................................+300°C
(Note 1)

SO-EP
Junction-to-Ambient Thermal Resistance (θJA) ...........41°C/W Junction-to-Case Thermal Resistance (θJC)..................2°C/W
(VIN = +14V, IOUT = 1mA, CIN = 10μF, COUT = 15μF, VEN = +2.4V, HOLD = open, 10kΩ from RESET to OUT, TA = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)
Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
Package Thermal Characteristics
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Input Voltage RangeVINVIN must be at least 1.5V greater than VOUT 6.565V
Reverse Input CurrentIREVERSEVIN = -60V0.110µA
Supply CurrentIQMeasured at GND
IOUT = 0mA58140
IOUT = 150mA2000
Shutdown Supply CurrentISHDNVEN ≤ +0.4V616µA
REGULATOR

Guaranteed Output CurrentIOUTVOUT = +5V150mA
Output VoltageVOUT
SET = GND, IOUT = 1mA to 150mA,
5V version4.855.2SET = GND, IOUT = 1mA to 150mA,
3.3V version3.1683.33.432
IOUT = 5mA, adjustable version (MAX5024)2.511
Dropout VoltageΔVDOILOAD = 150mA, VOUT = +5V (Note 3)0.91.5V
Startup Response TimeRising edge of VIN to VOUT, RL = 500Ω, SET = GND400µs
Line RegulationΔVOUT/ΔVIN+8V ≤ VIN ≤ +65V+5V version-1+1mV/V
+3.3V version-0.50.5
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
(VIN = +14V, IOUT = 1mA, CIN = 10μF, COUT = 15μF, VEN = +2.4V, HOLD = open, 10kΩ from RESET to OUT, TA = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Enable VoltageVENEN = high, regulator on2.4VEN = low, regulator off0.4
Enable Input CurrentIENVEN = +2.4V0.5µA
VEN = +14V4
HOLD VoltageVILRegulator on, EN transition from high to low0.4V
HOLD Release VoltageVIHEN = low, regulator shuts offVOUT - 0.4VV
HOLD Pullup CurrentIHOLDInternally connected to OUT4µA
SET Reference VoltageVSETIOUT = 10mA1.2231.2481.273V
SET Input Leakage CurrentISET0.5100nA
Load RegulationΔVOUT/ΔIOUTIOUT = 1mA to 150mA1mV/mA
Power-Supply Rejection RatioPSRRIOUT = 10mA, f = 100Hz, 500mVP-P,
VOUT = +5V54dB
Short-Circuit CurrentISCVIN = +8V175300mA
Thermal-Shutdown
TemperatureTJ(SHDN)150°C
Thermal-Shutdown HysteresisΔTJ(SHDN)20°C
RESET CIRCUIT

Reset ThresholdVTH
MAX502_L, SET = GND4.504.6254.75
MAX502_M, SET = GND4.254.3754.50
MAX502_T, SET = GND2.9703.0523.135
MAX502_S, SET = GND2.8052.8872.970
MAX5024L/T, SET = Divider(Figure 1) (Note 4)0.925 x VOUT
MAX5024M/S, SET = Divider(Figure 1) (Note 4)0.875 x VOUT
Reset Timeout PeriodtRP140200260ms
VOUT to Reset DelaytRDVOUT falling5µs
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
Note 2: Limits at -40°C are guaranteed by characterization and not production tested.
Note 3:
Dropout voltage is defined as VIN - VOUT when VOUT is 100mV below the value of VOUT for VIN = VOUT + 3V.
Note 4: VOUT = VSET (1 + R1/R2) = 1.248V (1 + R1/R2).
Note 5:
RESET is guaranteed to be in the correct logic state for VOUT > +1V.
Note 6:
Guaranteed by design, not production tested.
(VIN = +14V, CIN = 10μF, COUT = 15μF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise speciied.)
(VIN = +14V, IOUT = 1mA, CIN = 10μF, COUT = 15μF, VEN = +2.4V, HOLD = open, 10kΩ from RESET to OUT, TA = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)
Typical Operating Characteristics
Electrical Characteristics (continued)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Open-Drain RESET Output Voltage (Note 5)VOL
VOUT ≥ +1.0V, ISINK = 50µA,
RESET asserted0.3VOUT ≥ +2.85V, ISINK = 1.2mA,
RESET asserted0.3
VOUT ≥ +4.25V, ISINK = 3.2mA,
RESET asserted0.4
Open-Drain RESET Output-Leakage CurrentILKGRESET not asserted, VRESET = +11V1.0µA
WATCHDOG FUNCTION

Watchdog Timeout PeriodtWD1.121.62.08s
WDI Pulse WidthtWDI(Note 6)50ns
WDI Input Voltage
VIL0.4VIH2.4
WDI Input CurrentIWDIWDI = GND -1+1µA
NO-LOAD GROUND CURRENT
vs. TEMPERATURE

MAX5023 toc02
TEMPERATURE (°C)
IGND
(µA)
VIN = +6.5V
VIN = +14V
VIN = +65V
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE

MAX5023 toc03
TEMPERATURE (°C)
ISHDN
(µA)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX5023 toc01
VIN (V)
OUT
(V)554550152025303540510
IOUT = 0mA
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
(VIN = +14V, CIN = 10μF, COUT = 15μF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise speciied.)
Typical Operating Characteristics (continued)

OUTPUT VOLTAGE
vs. TEMPERATURE
MAX5023 toc04
TEMPERATURE (°C)
OUT
(V)
IOUT = 1mA
GROUND CURRENT
vs. TEMPERATURE
MAX5023 toc05
TEMPERATURE (°C)
IGND
(mA)
ILOAD = 50mA
ILOAD = 150mA
ILOAD = 100mA
OUT
(V)
OUTPUT VOLTAGE
vs. LOAD CURRENT AND TEMPERATURE
MAX5023 toc06
TEMPERATURE (°C)
ILOAD = 50mA
ILOAD = 150mAILOAD = 100mA
DROPOUT VOLTAGE
vs. LOAD CURRENT

MAX5023 toc07
ILOAD (mA)
DROPOUT VOLTAGE (V)
VOUT = 5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY

MAX5023 toc08
FREQUENCY (kHz)
PSRR (dB)
COUT = 15µF
IOUT = 10mA
LOAD-TRANSIENT RESPONSE

MAX5023 toc09
200µs/div
VOUT
100mV/div
IOUT
100mA/div
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
(VIN = +14V, CIN = 10μF, COUT = 15μF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise speciied.)
Typical Operating Characteristics (continued)
STARTUP RESPONSE

MAX5023 toc11
200µs/div
VOUT
1V/div
65V
VIN
50V/div
VEN = VIN
IOUT = 1mA
ENABLE STARTUP RESPONSE
(VIN = +14V)

MAX5023 toc12
100µs/div
VEN
1V/div
VOUT
2V/div
IOUT = 0mA
ENABLE STARTUP RESPONSE (VIN = +14V)

MAX5023 toc13
100µs/div
VEN
1V/div
VOUT
2V/div
IOUT = 150mA
ENABLE STARTUP RESPONSE (VIN = +65V)

MAX5023 toc14
100µs/div
VEN
1V/div
VOUT
2V/div
IOUT = 0mA
ENABLE STARTUP RESPONSE (VIN = +65V)

MAX5023 toc15
100µs/div
VEN
1V/div
VOUT
2V/div
IOUT = 150mA
INPUT VOLTAGE STEP RESPONSE

MAX5023 toc10
200µs/div
VOUT
1V/div
65V
6.5V
VIN
20V/div
VEN = VIN
IOUT = 1mA
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
(VIN = +14V, CIN = 10μF, COUT = 15μF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise speciied.)
Typical Operating Characteristics (continued)
SHUTDOWN RESPONSE

MAX5023 toc16
40ms/div
VEN
1V/div
VOUT
2V/div
IOUT = 1mA
ENABLE AND HOLD TIMING

MAX5023 toc17
200ms/div
VEN
5V/div
VOUT
5V/div
VHOLD
5V/div54535657554852515860615980
GROUND-CURRENT DISTRIBUTION
(TA = +40°C)

MAX5023toc18
IGND (µA)
NUMBER OF UNITS595861626053575663658964
GROUND-CURRENT DISTRIBUTION
(TA = +125°C)

MAX5023toc19
IGND (µA)
NUMBER OF UNITS
MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
PINNAMEFUNCTION
MAX5023MAX5024
1INRegulator Input. Supply voltage ranges from +6.5V to +65V. Bypass with a 10µF capacitor to GND.2ENEnable 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.3GNDGround. GND also functions as a heatsink. Solder to large pads or the circuit-board ground plane to maximize thermal dissipation.4RESETActive-Low Open-Drain Reset Output. RESET remains low while VOUT 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.5HOLD
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 loat HOLD or connect to OUT. Internally connected to OUT through a 4µA pullup current source (see Table 1, Truth Table).6N.C.No Connection. Not internally connected.—WDIWatchdog 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.8OUTRegulator Output. Fixed (+3.3V or +5V) or adjustable (+2.5V to +11V). Bypass with a 15µF capacitor (min). 7SETFeedback Input for Setting the Output Voltage. Connect to GND to set the output voltage to the preset ixed value (+3.3V or +5V). Connect to an external resistor-divider network for adjustable output operation (MAX5024 only).—EPExposed Pad. Connect pad to GND.
N.C.
HOLDRESET
OUT
WDIEN
GND
SO-EP

TOP VIEW
MAX5023

N.C.
HOLDRESET
OUT
SETEN
GND
SO-EP

MAX5024
Pin Conigurations
Pin Description

MAX5023/MAX502465V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer
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