MAX5035_11 MAXIM | Alldatasheet
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Technical content
Features
o Wide 7.5V to 76V Input Voltage Range o Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to 13.2V) Versions o 1A Output Current o Efficiency Up to 94% o Internal 0.4Ω High-Side DMOS FET o 270µA Quiescent Current at No Load, 10µA Shutdown Current o Internal Frequency Compensation o Fixed 125kHz Switching Frequency o Thermal Shutdown and Short-Circuit Current Limit o 8-Pin SO and PDIP Packages MAX5035 1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter
Ordering Information
19-2988; Rev 5; 5/11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. EVALUATION KIT AVAILABLE PART TEMP RANGE PIN- PACKAGE OU TPU T VO LTA GE ( V) MAX5035AUSA 0°C to +85°C 8 SO MAX5035AUPA 0°C to +85°C 8 PDIP MAX5035AASA -40°C to +125°C 8 SO M AX 5035AAS A/V + -40°C to +125°C 8 SO 3.3 MAX5035BUSA 0°C to +85°C 8 SO MAX5035BUPA 0°C to +85°C 8 PDIP MAX5035BASA -40°C to +125°C 8 SO M AX 5035BAS A/V + -40°C to +125°C 8 SO 5.0 BST VD SGND FB LX TOP VIEW VIN GND ON/OFF MAX5035 SO/PDIP Pin Configuration MAX5035 GND BST LX VIN SGND FB 50SQ100 VD 100µH VOUT VIN 7.5V TO 76V 68µF 0.1µF 0.1µF 68µF ON OFF ON/OFF Typical Operating Circuit /V denotes an automotive qualified part. +Denotes a lead(Pb)-free/RoHS-compliant package. Ordering Information continued at end of data sheet.
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter 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 specificatio ns is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. (Voltages referenced to GND, unless otherwise specified.) IN + 0.3V) FB V Continuous Power Dissipation (TA = +70°C) Operating Temperature Range Soldering Temperature (reflow) ELECTRICAL CHARACTERISTICS (MAX5035_U_ _) (VIN = +12V, V ON/OFF = +12V, I OUT = 0, TA = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C. See the Typical Application Circuit.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX5035A 7.5 76.0 MAX5035B 7.5 76.0 MAX5035C 15 76Input Voltage Range V IN MAX5035D/E 7.5 76.0 V Undervoltage Lockout UVLO 5.2 V MAX5035A VIN = 7.5V to 76V, IOUT = 20mA to 1A 3.185 3.3 3.415 MAX5035B VIN = 7.5V to 76V, IOUT = 20mA to 1A 4.85 5.0 5.15Output Voltage V OUT MAX5035C VIN = 15V to 76V, IOUT = 20mA to 1A 11.64 12 12.36 V V VIN = 12V, ILOAD = 0.5A, MAX5035A 86 VIN = 12V, ILOAD = 0.5A, MAX5035B 90 VIN = 24V, ILOAD = 0.5A, MAX5035C 94Efficiency η VIN = 12V, VOUT = 5V, ILOAD = 0.5A, MAX5035D/E 90 VFB = 3.5V, VIN = 7.5V to 76V, MAX5035A 270 440 VFB = 5.5V, VIN = 7.5V to 76V, MAX5035B 270 440 VFB = 13V, VIN = 15V to 76V, MAX5035C 270 440 VFB = 1.3V, MAX5035D 270 440 Quiescent Supply Current I Q VFB = 1.3V, MAX5035E 340 460 µA Shutdown Current I SHDN VON/OFF = 0V, VIN = 7.5V to 76V 10 45 µA Peak Switch Current Limit I LIM (Note 1) 1.30 1.9 2.50 A
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter ELECTRICAL CHARACTERISTICS (continued) (MAX5035_U_ _) (VIN = +12V, V ON/OFF = +12V, I OUT = 0, TA = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C. See the Typical Application Circuit.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Switch Leakage Current I OL VIN = 76V, VON/OFF = 0V, VLX = 0V 0.01 1 µA Switch On-Resistance R DS(ON) ISWITCH = 1A 0.40 0.80 Ω PFM Threshold I PFM Minimum switch current in any cycle 55 85 130 mA FB Input Bias Current I B MAX5035D/E -150 +0.01 +150 nA ON/OFF CONTROL INPUT V ON/OFF Input-Voltage Hysteresis V HYST 100 mV ON/OFF Input Current I ON/OFF VON/OFF = 0V to VIN 10 150 nA ON/OFF Operating Voltage Range VON/OFF 76 V OSCILLATOR Oscillator Frequency f OSC 109 125 135 kHz Maximum Duty Cycle D MAX MAX5035D/E 95 % VOLTAGE REGULATOR Regulator Output Voltage VD V IN = 8.5V to 76V, IL = 0 6.9 7.8 8.8 V Dropout Voltage 7.5V ≤ VIN ≤ 8.5V, IL = 1mA 2.0 V Load Regulation ∆VD/∆IVD 0 to 5mA 150 Ω PACKAGE THERMAL CHARACTERISTICS SO package (JEDEC 51) 170Thermal Resistance (Junction to Ambient) θJA DIP package (JEDEC 51) 110 °C/W THERMAL SHUTDOWN Thermal-Shutdown Junction Temperature TSH +160 °C Thermal-Shutdown Hysteresis T HYST 20 °C ELECTRICAL CHARACTERISTICS (MAX5035_A_ _) (VIN = +12V, VON/OFF = +12V, IOUT = 0, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. See the Typical Application Circuit.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX5035A 7.5 76.0 MAX5035B 7.5 76.0 MAX5035C 15 76Input Voltage Range V IN MAX5035D/E 7.5 76.0 V Undervoltage Lockout UVLO 5.2 V MAX5035A VIN = 7.5V to 76V, IOUT = 20mA to 1A 3.185 3.3 3.415 MAX5035B VIN = 7.5V to 76V, IOUT = 20mA to 1A 4.825 5.0 5.175Output Voltage V OUT MAX5035C VIN = 15V to 76V, IOUT = 20mA to 1A 11.58 12 12.42 V
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter ELECTRICAL CHARACTERISTICS (MAX5035_A_ _) (continued) (VIN = +12V, VON/OFF = +12V, IOUT = 0, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. See the Typical Application Circuit.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V VIN = 12V, ILOAD = 0.5A, MAX5035A 86 VIN = 12V, ILOAD = 0.5A, MAX5035B 90 VIN = 24V, ILOAD = 0.5A, MAX5035C 94Efficiency η VIN = 12V, VOUT = 5V, ILOAD = 0.5A, MAX5035D/E 90 VFB = 3.5V, VIN = 7.5V to 76V, MAX5035A 270 440 VFB = 5.5V, VIN = 7.5V to 76V, MAX5035B 270 440 VFB = 13V, VIN = 15V to 76V, MAX5035C 270 440 VFB = 1.3V, MAX5035D 270 440 Quiescent Supply Current I Q VFB = 1.3V, MAX5035E 340 460 µA Shutdown Current I SHDN VON/OFF = 0V, VIN = 7.5V to 76V 10 45 µA Peak Switch Current Limit I LIM (Note 1) 1.30 1.9 2.50 A VIN = 76V, VON/OFF = 0V, VLX = 0V 1 Switch Leakage Current I OL VIN = 76V, VON/OFF = 0V, VLX = 0V, MAX5035E 5 µA Switch On-Resistance RDS(ON) ISWITCH = 1A 0.40 0.80 Ω PFM Threshold I PFM Minimum switch current in any cycle 55 85 130 mA FB Input Bias Current I B MAX5035D/E -150 +0.01 +150 nA ON/OFF CONTROL INPUT V ON/OFF Input-Voltage Hysteresis VHYST 100 mV ON/OFF Input Current ION/OFF VON/OFF = 0V to VIN 10 150 nA ON/OFF Operating Voltage Range VON/OFF 76 V OSCILLATOR Oscillator Frequency f OSC 105 125 137 kHz Maximum Duty Cycle D MAX MAX5035D/E 95 % VOLTAGE REGULATOR Regulator Output Voltage VD V IN = 8.5V to 76V, IL = 0 6.5 7.8 9.0 V Dropout Voltage 7.5V ≤ VIN ≤ 8.5V, IL = 1mA 2.0 V Load Regulation ∆VD/∆IVD 0 to 5mA 150 Ω
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Typical Operating Characteristics (VIN = 12V, V ON/OFF = 12V, T A = -40 °C to +125 °C, unless otherwise noted. Typical values are at T A = +25 °C. See the Typical Application Circuit, if applicable.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS PACKAGE THERMAL CHARACTERISTICS SO package (JEDEC 51) 170Thermal Resistance (Junction to Ambient) θJA DIP package (JEDEC 51) 110 °C/W THERMAL SHUTDOWN Thermal-Shutdown Junction Temperature TSH +160 °C Thermal-Shutdown Hysteresis T HYST 20 °C Note 1: Switch current at which current limit is activated. Note 2: All limits at -40°C are guaranteed by design, not production tested. VOUT vs. TEMPERATURE (MAX5035AASA, VOUT = 3.3V) MAX5035 toc01 TEMPERATURE (°C) VOUT (V) 3.24 3.28 3.32 3.36 3.40 3.20 IOUT = 0.1A IOUT = 1A 100500-50 150-25 25 75 125 VOUT vs. TEMPERATURE (MAX5035DASA, VOUT = 5V) MAX5035 toc02 TEMPERATURE (°C) VOUT (V) 125100-25 0 25 50 75 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 4.80 -50 150 IOUT = 0.1A IOUT = 1A LINE REGULATION (MAX5035AASA, VOUT = 3.3V) MAX5035 toc03 INPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 65503520 3.24 3.28 3.32 3.36 3.40 3.20 58 0 IOUT = 1A IOUT = 0.1A LINE REGULATION (MAX5035DASA, VOUT = 5V) MAX5035 toc04 INPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 655020 35 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 4.80 58 0 IOUT = 1A IOUT = 0.1A LOAD REGULATION (MAX5035AASA, VOUT = 3.3V) MAX5035 toc05 ILOAD (mA) VOUT (V) 800600400200 3.24 3.28 3.32 3.36 3.40 3.20 0 1000 VIN = 7.5V, 24V VIN = 76V LOAD REGULATION (MAX5035DASA, VOUT = 5V) MAX5035 toc06 ILOAD (mA) VOUT (V) 800600400200 4.95 5.00 5.05 5.10 4.90 01 0 0 0 VIN = 76V VIN = 24V VIN = 7.5V ELECTRICAL CHARACTERISTICS (MAX5035_A_ _) (continued) (VIN = +12V, VON/OFF = +12V, IOUT = 0, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C. See the Typical Application Circuit.) (Note 2)
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Typical Operating Characteristics (continued) (VIN = 12V, V ON/OFF = 12V, T A = -40 °C to +125 °C, unless otherwise noted. Typical values are at T A = +25 °C. See the Typical Application Circuit, if applicable.) OUTPUT CURRENT LIMIT vs. TEMPERATURE MAX5035 toc10 TEMPERATURE (°C) OUTPUT CURRENT LIMIT (A) 1251007550250-25 0.5 1.0 1.5 2.0 -50 150 MAX5035DASA VOUT = 5V 5% DROP IN VOUT OUTPUT CURRENT LIMIT vs. INPUT VOLTAGE MAX5035 toc11 INPUT VOLTAGE (V) OUTPUT CURRENT LIMIT (A) 65503520 0.8 1.1 1.4 1.7 2.0 0.5 58 0 MAX5035DASA VOUT = 5V 5% DROP IN VOUT QUIESCENT SUPPLY CURRENT vs. TEMPERATURE MAX5035 toc12 TEMPERATURE (°C) QUIESCENT SUPPLY CURRENT (µA) 230 260 290 320 350 200 100500-50 150-25 25 75 125 QUIESCENT SUPPLY CURRENT vs. INPUT VOLTAGE MAX5035 toc13 INPUT VOLTAGE (V) QUIESCENT SUPPLY CURRENT (µA) 665646362616 230 260 290 320 350 200 67 6 SHUTDOWN CURRENT vs. TEMPERATURE MAX5035 toc14 TEMPERATURE (°C) SHUTDOWN CURRENT (µA) 100500-50 150-25 25 75 125 SHUTDOWN CURRENT vs. INPUT VOLTAGE MAX5035 toc15 INPUT VOLTAGE (V) SHUTDOWN CURRENT (µA) 665646362616 67 6 EFFICIENCY vs. LOAD CURRENT (MAX5035AASA, VOUT = 3.3V) MAX5035 toc07 LOAD CURRENT (mA) EFFICIENCY (%) 800600400200 100 0 1000 VIN = 76V VIN = 48V VIN = 24V VIN = 12V VIN = 7.5V EFFICIENCY vs. LOAD CURRENT (MAX5035DASA, VOUT = 5V) MAX5035 toc08 LOAD CURRENT (mA) EFFICIENCY (%) 800600400200 100 01 0 0 0 VIN = 76V VIN = 48V VIN = 24V VIN = 12V VIN = 7.5V EFFICIENCY vs. LOAD CURRENT (MAX5035DASA, VOUT = 12V) MAX5035 toc09 LOAD CURRENT (mA) EFFICIENCY (%) 800600400200 100 0 1000 VIN = 76V VIN = 48V VIN = 24V VIN = 15V
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Typical Operating Characteristics (continued) (VIN = 12V, V ON/OFF = 12V, T A = -40 °C to +125 °C, unless otherwise noted. Typical values are at T A = +25 °C. See the Typical Application Circuit, if applicable.) OUTPUT VOLTAGE vs. INPUT VOLTAGE MAX5035 toc16 VIN (V) VOUT (V) 12963 01 5 IOUT = 0 IOUT = 0.3A IOUT = 1A MAX5035DASA VOUT = 12V VON/OFF = VIN MAX5035DASA LOAD-TRANSIENT RESPONSE MAX5035 toc17 400µs/div B A A: VOUT, 200mV/div, AC-COUPLED B: IOUT, 500mA/div, 0.1A TO 1A VOUT = 5V MAX5035DASA LOAD-TRANSIENT RESPONSE MAX5035 toc18 400µs/div B A A: VOUT, 200mV/div, AC-COUPLED B: IOUT, 500mA/div, 0.5A TO 1A VOUT = 5V MAX5035DASA LOAD-TRANSIENT RESPONSE MAX5035 toc19 400µs/div B A A: VOUT, 200mV/div, AC-COUPLED B: IOUT, 500mA/div, 0.1A TO 0.5A VOUT = 5V MAX5035DASA LX WAVEFORMS MAX5035 toc20 4µs/div B A A: SWITCH VOLTAGE (LX PIN), 20V/div (VIN = 48V) B: INDUCTOR CURRENT, 500mA/div (IOUT = 1A) MAX5035DASA LX WAVEFORMS MAX5035 toc21 4µs/div B A A: SWITCH VOLTAGE (LX PIN), 20V/div (VIN = 48V) B: INDUCTOR CURRENT, 200mA/div (IOUT = 100mA)
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Typical Operating Characteristics (continued) (VIN = 12V, V ON/OFF = 12V, T A = -40 °C to +125 °C, unless otherwise noted. Typical values are at T A = +25 °C. See the Typical Application Circuit, if applicable.) MAX5035DASA LX WAVEFORMS MAX5035 toc22 4µs/div B A A: SWITCH VOLTAGE (LX PIN), 20V/div (VIN = 48V) B: INDUCTOR CURRENT, 200mA/div (IOUT = 0) MAX5035DASA STARTUP WAVEFORM (IO = 0) MAX5035 toc23 1ms/div B A A: VON/OFF, 2V/div B: VOUT, 2V/div MAX5035DASA STARTUP WAVEFORM (IO = 1A) MAX5035 toc24 1ms/div B A A: VON/OFF, 2V/div B: VOUT, 2V/div PEAK SWITCH CURRENT LIMIT vs. INPUT VOLTAGE MAX5035 toc25 INPUT VOLTAGE (V) PEAK SWITCH CURRENT LIMIT (A) 56 6646362616 1.0 1.5 2.0 2.5 3.0 0.5 67 6 MAX5035DASA VOUT = 5V 5% DROP IN VOUT
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Pin Description PIN NAME FUNCTION 1 BST Boost Capacitor Connection. Connect a 0.1µF ceramic capacitor from BST to LX. 2 VD Internal Regulator Output. Bypass VD to GND with a 0.1µF ceramic capacitor. 3 SGND Internal Connection. SGND must be connected to GND. 4F B Output Sense Feedback Connection. For fixed output voltage (MAX5035A, MAX5035B, MAX5035C), connect FB to VOUT. For adjustable output voltage (MAX5035D, MAX5035E), use an external resistive voltage-divider to set VOUT. VFB regulating set point is 1.22V. 5 ON/ OFF Shutdown Control Input. Pull ON/OFF low to put the device in shutdown mode. Drive ON/OFF high for normal operation.
6 GND Ground
7V IN Input Voltage. Bypass VIN to GND with a low ESR capacitor as close to the device as possible.
8 LX Source Connection of Internal High-Side Switch
(FOR DRIVER) REGULATOR (FOR ANALOG) OSC RAMP HIGH-SIDE CURRENT SENSE IREF-PFM IREF-LIM CPFM 1.69V CILIM FB VREF EAMP CONTROL LOGIC CPWM VD GND Rh Rl CLK SGND MAX5035 TYPE 3 COMPENSATION THERMAL SHUTDOWN RAMP Block Diagram
circuit protection, and thermal shutdown. Drive ON/ OFF to ground to shut down the MAX5035. tively. The recommended value for R2 is less than 1MΩ. output under continuous thermal overload conditions. Figure 1. Adjustable Output Voltage
the output immediately after the primary LC. with low DC resistance for higher efficiency. device using short leads and short PC board traces. rectifier at different input voltages and output current. allows the use of smaller-value input capacitors. capacitors with high ripple-current capability at the input. and fSW is the oscillator switching frequency (125kHz). capacitance value of 80mΩ and 51µF, respectively. tor discharge is equal to 10% and 90%, respectively. capacitor RMS current occurs at about 50% duty cycle. Table 1. Diode Selection
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter Ensure that the ripple specification of the input capaci- tor exceeds the worst-case capacitor RMS ripple cur- rent. Use the following equations to calculate the input capacitor RMS current: I PRMS is the input switch RMS current, I AVGIN is the input average current, and η is the converter efficiency. The ESR of aluminum electrolytic capacitors increases significantly at cold temperatures. Use a 1µF or greater value ceramic capacitor in parallel with the aluminum electrolytic input capacitor, especially for input voltages below 8V. Output Filter Capacitor The worst-case peak-to-peak and RMS capacitor ripple current, allowable peak-to-peak output ripple voltage, and the maximum deviation of the output voltage dur- ing load steps determine the capacitance and the ESR requirements for the output capacitors. The output capacitance and its ESR form a zero, which improves the closed-loop stability of the buck regulator. Choose the output capacitor so the ESR zero frequency Z) occurs between 20kHz to 40kHz. Use the following equation to verify the value of fZ. Capacitors with 100mΩ to 250mΩ ESR are recommended to ensure the closed- loop stability, while keeping the output ripple low. The output ripple is comprised of ∆VOQ (caused by the capacitor discharge) and ∆VOESR (caused by the ESR of the capacitor). Use low-ESR tantalum or aluminum electrolytic capacitors at the output. Assuming that the contributions from the ESR and capacitor discharge equal 80% and 20% respectively, calculate the output capacitance and the ESR required for a specified rip- ple using the following equations: The MAX5035 has an internal soft-start time (t SS) of 400µs. It is important to keep the output rise time at startup below t SS to avoid output overshoot. The output rise time is directly proportional to the output capacitor. Use 68µF or lower capacitance at the output to control the overshoot below 5%. In a dynamic load application, the allowable deviation of the output voltage during the fast-transient load dic- tates the output capacitance value and the ESR. The output capacitors supply the step load current until the controller responds with a greater duty cycle. The response time (t RESPONSE ) depends on the closed- loop bandwidth of the converter. The resistive drop across the capacitor ESR and capacitor discharge cause a voltage droop during a step load. Use a com- bination of low-ESR tantalum and ceramic capacitors for better transient load and ripple/noise performance. Keep the maximum output-voltage deviation above the tolerable limits of the electronics being powered. Assuming a 50% contribution each from the output capacitance discharge and the ESR drop, use the fol- lowing equations to calculate the required ESR and capacitance value: where I STEP is the load step and t RESPONSE is the response time of the controller. Controller response time is approximately one-third of the reciprocal of the closed-loop unity-gain bandwidth, 20kHz typically. PCB Layout Considerations Proper PCB layout is essential. Minimize ground noise by connecting the anode of the Schottky rectifier, the input bypass capacitor ground lead, and the output fil- ter capacitor ground lead to a single point (“star” C It VOUT STEP RESPONSE OQ = × ESR V IOUT OESR STEP = ∆ C I VfOUT L OQ SW ≈ ×× ∆22. ESR V IOUT OESR L = ∆ f C ESRZ OUT OUT = ×× × 2 π II I I I D I V PRMS PK DC PK DC AVGIN =+ + × ()() × OOUT OUT IN PK OUT L DC OUT L I V II I II I =+ =− η 22 , andD V V OUT IN II ICRMS PRMS AVGIN=− 2 22 where :
ground configuration). A ground plane is required. Figure 2. Fixed Output Voltages Table 2. Typical External Components Selection (Circuit of Figure 2)
Table 2. Typical External Components Selection (Circuit of Figure 2) (continued)
Table 3. Component Suppliers *LOCATE PTC AS CLOSE TO HEAT-DISSIPATING COMPONENTS AS POSSIBLE. Figure 3. Load Temperature Monitoring with ON/OFF (Requires Accurate VIN)
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter MAX5035B CIN 68µF COUT 68µF 220µH FB VOUT BST LX SGND 0.1µF 0.1µF GND VIN 7.5V TO 36V VIN RtCt D1 B240 VD ON/OFF MAX5035A C'IN 68µF C'OUT 68µF L1' 100µH FB V'OUT 3.3V BST LX SGND 0.1µF 0.1µF GND VIN R1' Rt'Ct' D1' B240 VD ON/OFF Figure 4. Dual-Sequenced DC-DC Converters (Startup Delay Determined by R1/R1’, Ct/Ct’ and Rt/Rt’) /V denotes an automotive qualified part. +Denotes a lead(Pb)-free/RoHS-compliant package.
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
8 SO S8+2 21-0041 90-0096
8 PDIP P8+1 21-0043 —
1A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converter 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 ____________________ 17 © 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc. REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 9/03 Initial release — 1 6/04 Removed future-product asterisks and made specification changes 1, 2, 3 2 1/07 Modified Absolute Maximum Ratings section, updated Ordering Information, style edits 2, 3 3 5/09 Modified Absolute Maximum Ratings section 1, 2, 16, 18 4 4/10 Updated Electrical Characteristics table specifications 2, 3, 4, 16, 17 5 5/11 Added new variant (MAX5035E) 1–4, 9, 10, 16