MAX5023

MAX5023 MAXIM | Alldatasheet

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Technical content

Features

o Wide Operating Input Voltage Range +6.5V to +65V o Thermally Enhanced 8-Pin SO Package Dissipates 1.5W o Guaranteed 150mA Output Current o 60µA No-Load Supply Current o -60V Reverse-Battery Protection o Preset +3.3V or +5.0V Output Voltage o Thermal and Short-Circuit Protection o Operate Over -40°C to +125°C Temperature Range o Integrated µP Reset Circuit o Watchdog Timer with 1.6s Timeout Period (MAX5023) o Regulator Enable and Hold Inputs Implement Self-Holding Circuit o SET Input for Adjustable Output Voltage (MAX5024) MAX5023/MAX5024 65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer N.C. HOLDRESET OUT WDIEN GND IN SO TOP VIEW MAX5023 N.C. HOLDRESET OUT SETEN GND IN SO MAX5024 PART TEMP RANGE PIN-PACKAGE MAX5023 _ ASA -40 °C to +125°C 8 SO MAX5024 _ ASA -40 °C to +125°C 8 SO Pin Configurations

Ordering Information

19-2619; Rev 0; 10/02 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Selector Guide and Typical Operating Circuit appear at end of data sheet. Note: These parts offer a choice of reset thresholds, reset threshold tolerances, and regulator output voltages. From the Selector Guide, insert the desired suffix letter into the blank to complete the part number.

65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(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 1) 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 specificatio ns is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ±20mA Continuous Power Dissipation (TA = +70°C) Thermal Resistance: PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range V IN VIN must be at least 1.5V greater than VOUT 6.5 65 V Reverse Input Current I REVERSE VIN = -60V 0.1 10 µA IOUT = 0mA 58 140Supply Current I Q M easur ed at G N D IOU T = 150m A 2000 µA Shutdown Supply Current I SHDN VEN ≤ +0.4V 6 16 µA REGULATOR Guaranteed Output Current I OUT VOUT = +5V 150 mA SET = GND, IOUT = 1mA to 150mA, 5V version 4.8 5 5.2 SET = GND, IOUT = 1mA to 150mA, 3.3V version 3.168 3.3 3.432Output Voltage V OUT IOUT = 5mA, adjustable version (MAX5024) 2.5 11 V Dropout Voltage ∆VDO ILOAD = 150mA, VOUT = +5V (Note 2) 0.9 1.5 V Startup Response Time Rising edge of VIN to VOUT, RL = 500Ω, SET = GND 400 µs +5V version -1 1Line Regulation ∆VOUT/ ∆VIN +8V ≤ VIN ≤ +65V +3.3V version -0.5 0.5 mV/V EN = high, regulator on 2.4Enable Voltage V EN EN = low, regulator off 0.4 V VEN = +2.4V 0.5Enable Input Current I EN VEN = +14V 4 µA HOLD Voltage V IL Regulator on, EN transition from high to low 0.4 V HOLD Release Voltage V IH EN = low, regulator shuts off VOUT - 0.4V V HOLD Pullup Current I HOLD Internally connected to OUT 4 µA SET Reference Voltage V SET IOUT = 10mA 1.223 1.248 1.273 V SET Input Leakage Current I SET 0.5 100 nA

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

65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Typical Operating Characteristics (VIN = +14V, CIN = 10µF, COUT = 15µF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise specified.) OUTPUT VOLTAGE vs. INPUT VOLTAGE MAX5023 toc01 VIN (V) VOUT (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 06 5 IOUT = 0mA NO-LOAD GROUND CURRENT vs. TEMPERATURE MAX5023 toc02 TEMPERATURE (°C) IGND (µA) 1109565 80-10 5 20 35 50-25 100 -40 125 VIN = +6.5V VIN = +14V VIN = +65V SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MAX5023 toc03 TEMPERATURE (°C) ISHDN (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) VOUT (V) 1109565 80-10 5 20 35 50-25-40 125 IOUT = 1mA 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 GROUND CURRENT vs. TEMPERATURE MAX5023 toc05 TEMPERATURE (°C) IGND (mA) 1109565 80-10 5 20 35 50-25-40 125 ILOAD = 50mA ILOAD = 150mA ILOAD = 100mA VOUT (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 ILOAD = 50mA ILOAD = 150mAILOAD = 100mA DROPOUT VOLTAGE vs. LOAD CURRENT MAX5023 toc07 ILOAD (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 10 150 VOUT = 5V POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX5023 toc08 FREQUENCY (kHz) PSRR (dB) 100101 -70 -60 -50 -40 -30 -20 -10 -80 0.1 1000 COUT = 15µF IOUT = 10mA LOAD-TRANSIENT RESPONSE MAX5023 toc09 200µs/div VOUT 100mV/div IOUT 100mA/div

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

65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer 47 54 53 56 575548 5251 58 60 61 59 80 GROUND-CURRENT DISTRIBUTION (TA = +40°C) MAX5023toc18 IGND (µA) NUMBER OF UNITS Typical Operating Characteristics (continued) (VIN = +14V, CIN = 10µF, COUT = 15µF, VEN = +2.4V, VOUT = +5V, SET = GND, TA = +25°C, unless otherwise specified.) 45 59 58 61 626053 5756 63 65 89 64 GROUND-CURRENT DISTRIBUTION (TA = +125°C) MAX5023toc19 IGND (µA) NUMBER OF UNITS Pin Description PIN MAX5023 MAX5024 NAME FUNCTION 11I N Regulator Input. Supply voltage ranges from +6.5V to +65V. Bypass with a 10µF capacitor to GND.

22 E N

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. 3 3 GND Ground. GND also functions as a heatsink. Solder to large pads or the circuit-board ground plane to maximize thermal dissipation.

44 RESET

Active-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.

55 HOLD

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). 6 6 N.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. 8 8 OUT Regulator Output. Fixed (+3.3V or +5V) or adjustable (+2.5V to +11V). Bypass with a 15µF capacitor (min). — 7 SET 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).

shows a self-holding configuration for the MAX5023. Figure 1. Functional Diagram

ON/OFF switch for the regulator output. turns off the pass transistor and allows the IC to cool. regulator to +3.3V or +5V (see the Selector Guide ). Dual Mode is a trademark of Maxim Integrated Products, Inc. Figure 3. Enable and Hold Behavior

where VSET = 1.248V and R2 ≅ 100kΩ. Figure 4. Setting the MAX5024 Adjustable Output Voltage Figure 5. Maximum Power Dissipation vs. Temperature Table 1. Truth Table for Regulator Output

1 Low X Off

internal resistor to ground.

2 High X On Regulator output is active

3 High Low On

4 X Low On

5 Low High Off

minimum 10µF capacitor between IN and GND.

2 COPPER ISLAND

Figure 6. Maximum Output Current vs. Input Voltage

65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Selector Guide PRESET VOUT RESET THRESHOLD (VTH) VOUT RESET TOLERANCE PART 7.5% VOUT - 12.5% WATCHDOG TIMER ADJUSTABLE REGULATOR OUTPUT Bold Items indicate standard versions. Samples are generally available on standard versions only. Contact factory for availability of non- standard versions. Set MAX5024’s adjustable output voltage by connecting a resistive-divider from OUT to SET (see the Output Voltage Selection section). Chip Information TRANSISTOR COUNT: 1382 PROCESS: BiCMOS IN EN GND HOLD VCC I/OWDI RESET OUT RESET µP 15µF 10kΩ +6.5V TO +65V I/O ON OFF IGNITIONSWITCH MAX5023 10µF Typical Operating Circuit

65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circu it patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline info rmation go to www.maxim-ic.com/packages.) 8L, SOIC EXP. PAD.EPS