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MAXM17623AMB+T

MAXM17623AMB+T

  • 厂商:

    MAXIM(美信)

  • 封装:

    SMD10

  • 描述:

    2.9V-TO-5V INPUT, 1A , 0.8V-TO-1

  • 数据手册
  • 价格&库存
MAXM17623AMB+T 数据手册
EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAXM17623/MAXM17624 General Description The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler powersupply solutions. MAXM17623 and MAXM17624 are high-frequency synchronous step down DC-DC converter modules, with integrated MOSFETs, compensation components, and inductors, that operate over 2.9V to 5.5V input voltage range. MAXM17623 and MAXM17624 support up to 1A load current and allow use of small, lowcost input and output capacitors. The output voltage can be adjusted from 0.8V to 3.3V. The modules significantly reduce design complexity, manufacturing risks, and offer a true plug-and-play power supply solution, reducing timeto-market. The MAXM17623 and MAXM17624 modules employ peak-current-mode control architecture under steady-state operation. To reduce input inrush current, the devices offer a fixed 1ms soft-start time.  Both  modules feature selectable PWM or PFM mode of operation at light loads. When PWM mode is selected, MAXM17623 operates at a fixed 2MHz switching frequency and MAXM17624 operates at a fixed 4MHz switching frequency. MAXM17623 offers output voltages from 0.8V to 1.5V and MAXM17624 offers output voltages from 1.5V to 3.3V. The MAXM17623 and MAXM17624 modules are available in a low profile, compact 10-pin, 2.6mm x 2.1mm x 1.3mm, uSLIC™ package. 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Benefits and Features ●● Easy to Use • 2.9V to 5.5V Input​​ • Adjustable 0.8V to 3.3V Output • ±1% Feedback Accuracy • Up to 1A Output Current • Fixed 2MHz or 4MHz Operation • 100% Duty-Cycle Operation • Internally Compensated • All Ceramic Capacitors ●● High Efficiency • Selectable PWM- or PFM-Mode of Operation • Shutdown Current as Low as 0.1μA (typ) ●● Flexible Design • Internal Soft-Start and Prebias Startup • Open-Drain Power Good Output (PGOOD Pin) ●● Robust Operation • Overtemperature Protection • -40°C to +125°C Ambient Operating Temperature/ -40°C to +150°C Junction Temperature ●● Rugged • Passes Drop, Shock, and Vibration Standards: JESD22-B103, B104, B111 Typical Application Circuit Applications ●● ●● ●● ●● ●● Point of Load Power Supply Standard 5V Rail Supplies Battery Powered Applications Distributed Power Systems Industrial Sensors and Process Control Ordering Information appears at end of data sheet. 19-100317; Rev 3; 1/20 VIN 2.9V TO 5.5V CIN 2.2µF MAXM17624 IN EN PGOOD OUTSNS OUT PGND MODE FB SGND LX 1.5V, 1A COUT 10µF VOUT R1 33.2kΩ R2 37.4kΩ MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Absolute Maximum Ratings IN to PGND................................................................-0.3V to 6V EN, PGOOD, FB, OUTSNS to SGND........................-0.3V to 6V MODE TO SGND..........................................-0.3V to (IN + 0.3V) LX, OUT TO PGND.......................................-0.3V to (IN + 0.3V) PGND TO SGND.....................................................-0.3V to 0.3V Output Short-Circuit Duration.....................................Continuous Junction Temperature (Note1)..........................................+150°C Storage Temperature Range................................-55°C to 125°C Lead Temperature (soldering,10s)...................................+260°C Soldering Temperature (reflow).......................................+260°C 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. Package Information PACKAGE TYPE: 10-PIN uSIP Package Code MA102A2+1 Outline Number 21-100245 Land Pattern Number 90-100084 THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2) Junction to Ambient (θJA) 77°C/W For the latest package outline information and land patterns (footprints), go to www.maximintegrated.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. Note 1: Junction temperature greater than +125°C degrades operating lifetimes. Note 2: Package thermal resistance is measured on an evaluation board with natural convection. Electrical Characteristics (VIN = VEN = 3.6V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V INPUT SUPPLY (VIN) Input Voltage Range VIN IIN-SHDN Input Supply Current IQ-PFM IQ-PWM Undervoltage Lockout Threshold (UVLO) UVLO Hysteresis www.maximintegrated.com VIN_UVLO VIN_UVLO_HYS 2.9 VEN = 0, Shutdown mode 0.1 PFM Mode, No Load 40.0 PWM Mode, MAXM17623 4.5 PWM Mode, MAXM17624 6.0 IN Rising 2.72 2.80 200 µA mA 2.88 V mV Maxim Integrated │  2 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Electrical Characteristics (continued) (VIN = VEN = 3.6V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V ENABLE (EN) EN Low Threshold VEN_LOW EN Falling EN High Threshold VEN_HIGH EN Rising EN Input Leakage IEN EN = 5.5V, TA = TJ = 2 25°C V 10 50 nA TIMING Switching Frequency Minimum ON time Maximum Duty Cycle Soft-Start time fSW MAXM17623 1.92 2.00 2.08 MAXM17624 3.84 4.00 4.16 tON_MIN 40 DMAX MHz ns 100 % tSS 1 ms VFB-REG 0.8 V FEEDBACK (FB) FB Regulation Voltage FB Voltage Accuracy VFB PWM Mode FB Input Bias Current IFB FB = 0.6V, TA = TJ = 25°C 50 nA IOUTSNS-BIAS VOUTSNS = 1.8V 10 μA PGOOD Rising Threshold VPGOOD_RISE FB Rising 91.5 93.5 95.5 % PGOOD Falling Threshold VPGOOD_FALL FB Falling 88 90 92 % IPGOOD = 5mA 200 mV PGOOD = 5.5V, TA = TJ = 25°C 100 nA OUTSNS Input Bias Current -1 +1 % POWER GOOD (PGOOD) PGOOD Output Low PGOOD Output Leakage Current VOL_PGOOD ILEAK_PGOOD PGOOD Deassertion After Soft-Start 184 μs 5 μA Thermal Shutdown Rising Threshold 165 °C Thermal Shutdown Hysteresis 10 °C MODE MODE Pullup Current VMODE = GND THERMAL SHUTDOWN Note 3: Electrical specifications are production tested at TA = +25°C. Specifications over the entire operating temperature range are guaranteed by design and characterization. www.maximintegrated.com Maxim Integrated │  3 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17623 EFFICIENCY vs. LOAD CURRENT (VOUT = 0.8V, PWM AND PFM MODE) MAXM17623 EFFICIENCY vs. LOAD CURRENT (VOUT = 1.2V, PWM AND PFM MODE) toc01 100 toc02 100 VIN = 3.3V, PWM MODE VIN = 5V, PWM MODE VIN = 5V, PWM MODE 0.1 60 1 60 0.01 0.1 1 0.01 LOAD CURRENT (A) MAXM17624 EFFICIENCY vs. LOAD CURRENT (VOUT = 1.8V, PWM AND PFM MODE) 100 VIN = 3.3V, PFM MODE VIN = 5V, PFM MODE 90 EFFICIENCY (%) VIN = 3.3V, PWM MODE 70 1 toc06 100 toc05 VIN = 5V, PFM MODE VIN = 3.3V, PFM MODE VIN = 5V, PFM MODE 90 90 80 0.1 LOAD CURRENT (A) MAXM17624 EFFICIENCY vs. LOAD CURRENT (VOUT = 3.3V, PWM AND PFM MODE) MAXM17624 EFFICIENCY vs. LOAD CURRENT (VOUT = 2.5V, PWM AND PFM MODE) toc04 100 80 70 70 VIN = 5V, PWM MODE 0.01 EFFICIENCY (%) VIN = 3.3V, PWM MODE EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) VIN = 3.3V, PWM MODE 80 LOAD CURRENT (A) EFFICIENCY (%) 90 90 80 60 VIN = 3.3V, PFM MODE VIN = 5V, PFM MODE VIN = 5V, PFM MODE VIN = 5V, PFM MODE 70 toc03 100 VIN = 3.3V, PFM MODE VIN = 3.3V, PFM MODE 90 MAXM17623 EFFICIENCY vs. LOAD CURRENT (VOUT = 1.5V, PWM AND PFM MODE) 80 VIN = 3.3V, PWM MODE VIN = 5V, PWM MODE 80 70 70 VIN = 5V, PWM MODE VIN = 5V, PWM MODE 0.01 0.1 LOAD CURRENT (A) 60 1 MAXM17623 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 0.8V, PWM AND PFM MODE) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 0.804 VIN = 5V, PWM MODE 0.801 0.798 VIN = 5V, PFM MODE VIN = 5V, PWM MODE 0.1 LOAD CURRENT (A) www.maximintegrated.com 1 toc09 1.505 VIN = 3.3V, PFM MODE 1.501 1.499 VIN = 5V, PFM MODE VIN = 5V, PWM MODE 1.497 1.208 VIN = 3.3V, PFM MODE 0.1 LOAD CURRENT (A) 1.503 1.214 1.211 0.01 MAXM17623 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 1.5V, PWM AND PFM MODE) 1.217 VIN = 3.3V, PWM MODE VIN = 3.3V, PWM MODE 0.795 0.01 1 toc08 1.220 0.807 VIN = 5V, PFM MODE 60 0.1 LOAD CURRENT (A) MAXM17623 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 1.2V, PWM AND PFM MODE) toc07 0.810 0.01 OUTPUT VOLTAGE (V) 60 1 1.205 0.01 VIN = 3.3V, PFM MODE 0.1 LOAD CURRENT (A) 1 VIN = 3.3V, PWM MODE 1.495 0.01 0.1 1 LOAD CURRENT (A) Maxim Integrated │  4 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17624 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 1.8V, PWM AND PFM MODE) MAXM17624 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 2.5V, PWM AND PFM MODE) toc10 toc11 2.535 VIN = 5V, PFM MODE OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1.807 1.804 VIN = 3.3V, PFM MODE 1.801 2.532 3.330 VIN = 3.3V, PFM MODE 2.529 2.526 VIN = 5V, PWM MODE VIN = 5V, PWM MODE 1.798 2.523 VIN = 3.3V, PWM MODE 1.795 0.01 0.1 toc12 3.335 VIN = 5V, PFM MODE OUTPUT VOLTAGE (V) 1.81 MAXM17624 OUTPUT VOLTAGE vs. LOAD CURRENT (VOUT = 3.3V, PWM AND PFM MODE) 2.52 1 VIN = 5V, PFM MODE 3.325 3.320 3.315 VIN = 5V, PWM MODE VIN = 3.3V, PWM MODE 0.01 LOAD CURRENT (A) 0.1 3.310 0.01 1 LOAD CURRENT (A) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 3.3V, VOUT = 0.8V, PWM MODE) (LOAD CURRENT STEPPED FROM 0.5A TO 1A) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 3.3V, VOUT = 0.8V, PWM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) VOUT (AC) 20mV/div IOUT 500mA/div 1 MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 3.3V, VOUT = 0.8V, PFM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) toc14 toc13 0.1 LOAD CURRENT (A) VOUT (AC) toc15 20mV/div VOUT( AC) 20mV/div 500mA/div IOUT IOUT 500mA/div 40µs/div 40µs/div 100µs/div MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 0.8V, PWM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 0.8V, PWM MODE) (LOAD CURRENT STEPPED FROM 0.5A TO 1A) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 0.8V, PFM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) toc17 toc16 VOUT( AC) 20mV/div VOUT( AC) toc18 20mV/div VOUT (AC) 20mV/div 500mA/div IOUT 500mA/div 40µs/div www.maximintegrated.com IOUT IOUT 40µs/div 500mA/div 100µs/div Maxim Integrated │  5 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 1.5V, PWM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 1.5V, PWM MODE) (LOAD CURRENT STEPPED FROM 0.5A TO 1A) toc19 MAXM17623 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 1.5V, PFM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) toc21 toc20 VOUT (AC) 50mV/div VOUT (AC) IOUT 500mA/div IOUT 50mV/div VOUT (AC) 50mV/div 500mA/div IOUT MAXM17624 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 3.3V, PWM MODE) (LOAD CURRENT STEPPED FROM 0.5A TO 1A) MAXM17624 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 3.3V, PWM MODE) (LOAD CURRENT STEPPED FROM 0A TO 0.5A) toc23 toc22 VOUT( AC) 100µs/div 40µs/div 40µs/div 50mV/div 500mA/div VOUT (AC) MAXM17624 LOAD TRANSIENT RESPONSE (VIN = 5V, VOUT = 3.3V, PFM MODE) (LOAD CURRENT STEPPED FROM 30mA TO 530mA) toc24 50mV/div VOUT (AC) 100mV/div 500mA/div IOUT 500mA/div IOUT IOUT 40µs/div 40µs/div MAXM17623 STARTUP THROUGH ENABLE (VIN = 5V, VOUT = 0.8V, ILOAD = 0A, PWM MODE) 40µs/div MAXM17623 STARTUP THROUGH ENABLE (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) toc25 MAXM17624 STARTUP THROUGH ENABLE (VIN = 5V, VOUT = 3.3V, ILOAD = 0A, PWM MODE) toc26 5V/div EN toc27 5V/div EN 5V/div LX 5V/div PGOOD 5V/div LX 500mV/div 5V/div VOUT PGOOD 200µs/div www.maximintegrated.com 5V/div EN 500mV/div VOUT 500mA/div LX 5V/div 2V/div VOUT 5V/div PGOOD 200µs/div 200µs/div Maxim Integrated │  6 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17623 SHUTDOWN THROUGH ENABLE (VIN = 5V, VOUT = 0.8V, ILOAD = 0A, PWM MODE) MAXM17624 STARTUP THROUGH ENABLE (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) toc28 MAXM17623 SHUTDOWN THROUGH ENABLE (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) toc29 toc30 5V/div EN EN 5V/div EN 5V/div 5V/div LX 5V/div LX 5V/div 2V/div LX VOUT 5V/div VOUT 500mV/div PGOOD PGOOD 5V/div VOUT 4ms/div 200µs/div MAXM17624 SHUTDOWN THROUGH ENABLE (VIN = 5V, VOUT = 3.3V, ILOAD = 0A, PWM MODE) 5V/div 10µs/div MAXM17624 SHUTDOWN THROUGH ENABLE (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) toc31 500mV/div PGOOD MAXM17623 STARTUP THROUGH IN (VIN = 5V, VOUT = 0.8V, ILOAD = 0A, PWM MODE) toc33 toc32 5V/div EN 5V/div EN 5V/div IN LX 5V/div LX 5V/div LX VOUT 2V/div VOUT 2V/div 5V/div PGOOD PGOOD 2ms/div 5V/div MAXM17624 STARTUP THROUGH IN (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) toc35 toc36 5V/div 5V/div IN IN 5V/div 500mV/div VOUT 5V/div 200µs/div www.maximintegrated.com 5V/div IN LX 5V/div 2V/div LX 5V/div 2V/div VOUT 5V/div VOUT 5V/div PGOOD PGOOD 5V/div 200µs/div MAXM17624 STARTUP THROUGH IN (VIN = 5V, VOUT = 3.3V, ILOAD = 0A, PWM MODE) toc34 LX VOUT PGOOD 20µs/div MAXM17623 STARTUP THROUGH IN (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) 5V/div 500mV/div PGOOD 200µs/div 200µs/div Maxim Integrated │  7 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) LX VOUT 5V/div IN 5V/div IN 5V/div 5V/div LX 5V/div LX 5V/div 500mV/div PGOOD toc39 toc38 toc37 IN MAXM17624 SHUTDOWN THROUGH IN (VIN = 5V, VOUT = 3.3V, ILOAD = 0A, PWM MODE) MAXM17623 SHUTDOWN THROUGH IN (VIN = 5V, VOUT = 0.8V, ILOAD = 0A, PWM MODE) MAXM17623 SHUTDOWN THROUGH IN (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) 5V/div VOUT 500mV/div 5V/div PGOOD VOUT 2V/div PGOOD 5V/div 10ms/div 20µs/div 2ms/div MAXM17623 PERMANENT OUTPUT SHORT (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) MAXM17624 SHUTDOWN THROUGH IN (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) toc41 toc40 5V/div LX 5V/div VOUT 2V/div PGOOD 5V/div toc42 5V/div SHORT IN MAXM17623 PERMANENT OUTPUT SHORT (VIN = 5V, VOUT = 1.5V, ILOAD = 1A, PWM MODE) 5V/div SHORT 500mV/div VOUT VOUT 1V/div VLX 5V/div VLX 5V/div IOUT 1A/div IOUT 1A/div 40µs/div 4µs/div 4µs/div MAXM17624 PERMANENT OUTPUT SHORT (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) MAXM17623 TEMPORARY OUTPUT SHORT (VIN = 5V, VOUT = 0.8V, ILOAD = 1A, PWM MODE) toc43 toc44 5V/div 5V/div 500mV/div SHORT SHORT VOUT 2V/div VOUT VLX 5V/div VLX IOUT 1A/div IOUT 5V/div 1A/div 4µs/div www.maximintegrated.com 100µs/div Maxim Integrated │  8 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17623 TEMPORARY OUTPUT SHORT (VIN = 5V, VOUT = 1.5V, ILOAD = 1A, PWM MODE) MAXM17624 TEMPORARY OUTPUT SHORT (VIN = 5V, VOUT = 3.3V, ILOAD = 1A, PWM MODE) toc45 toc46 5V/div SHORT SHORT 5V/div 2V/div 1V/div VOUT VOUT VLX 5V/div VLX 5V/div 1A/div 1A/div IOUT IOUT 100µs/div 100µs/div MAXM17623 BODE PLOT (VIN = 3.3V, VOUT = 0.8V, FULL LOAD, PWM MODE) toc48 50 40 160 40 160 30 120 30 120 20 80 10 40 MAGNITUDE 0 PHASE -10 -40 20 80 10 -40 -20 -30 -120 -30 -40 -160 -40 -80 -120 CROSSOVER FREQUENCY = 198.339kHz PHASE MARGIN = 53.210° -50 1000 10000 100000 -160 -200 1000000 FREQUENCY (Hz) FREQUENCY (Hz) MAXM17623 BODE PLOT (VIN = 3.3V, VOUT = 1.5V, FULL LOAD, PWM MODE) toc49 MAXM17623 BODE PLOT (VIN = 5V, VOUT = 1.5V, FULL LOAD, PWM MODE) toc50 50 40 160 40 160 30 120 30 120 20 80 20 80 10 40 MAGNITUDE 0 -10 0 PHASE -40 GAIN MAGNITUDE (dB) 200 GAIN PHASE (º) GAIN MAGNITUDE (dB) 0 PHASE -10 -80 50 40 MAGNITUDE 0 -20 CROSSOVER FREQUENCY = 183.920kHz PHASE MARGIN = 53.103° -50 -200 1000 10000 100000 1000000 200 10 -30 -120 -30 -160 -40 -50 1000 10000 100000 FREQUENCY (Hz) www.maximintegrated.com -200 1000000 -40 -20 -80 CROSSOVER FREQUENCY = 103.821kHz PHASE MARGIN = 60.112° 0 PHASE -10 -20 -40 40 MAGNITUDE 0 200 GAIN PHASE (º) 0 GAIN MAGNITUDE (dB) 200 GAIN PHASE (O) GAIN MAGNITUDE (dB) 50 MAXM17623 BODE PLOT (VIN = 5V, VOUT = 0.8V, FULL LOAD, PWM MODE) GAIN PHASE (º) toc47 -80 -120 CROSSOVER FREQUENCY = 110.239kHz PHASE MARGIN = 55.713° -50 1000 10000 100000 -160 -200 1000000 FREQUENCY (Hz) Maxim Integrated │  9 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Operating Characteristics (continued) (VIN = VEN = 5V, VSGND = VPGND = VMODE = VFB = VOUTSNS = 0V, LX = OUT = PGOOD = OPEN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted. The circuit values for different output voltage applications are as in Table 1, unless otherwise noted.) MAXM17623 OUTPUT CURRENT vs. AMBIENT TEMPERATURE (VIN = 3.3V) MAXM17624 BODE PLOT (VIN = 5V, VOUT = 3.3V, FULL LOAD, PWM MODE) toc51 200 160 30 120 20 80 10 40 MAGNITUDE 0 0 PHASE -10 -40 -20 -80 -30 -120 toc52 1.2 1.0 LOAD CURRENT (A) 40 GAIN PHASE (º) GAIN MAGNITUDE (dB) 50 0.8 0.6 VOUT = 1.5V 0.4 VOUT = 0.8V 0.2 CROSSOVER FREQUENCY = 123.829kHz -160 PHASE MARGIN = 63.213° -200 -50 1000 10000 100000 1000000 -40 0.0 25 FREQUENCY (Hz) toc53 1.2 85 105 125 toc54 1.2 1.0 LOAD CURRENT (A) 1.0 LOAD CURRENT (A) 65 MAXM17624 OUTPUT CURRENT vs. AMBIENT TEMPERATURE (VIN = 5V) MAXM17623 OUTPUT CURRENT vs. AMBIENT TEMPERATURE (VIN = 5V) VOUT = 1.5V 0.8 VOUT = 0.8V 0.6 0.4 0.8 VOUT = 3.3V 0.6 0.4 0.2 0.0 45 AMBIENT TEMPERATURE (oC) 0.2 25 45 65 85 105 125 0.0 AMBIENT TEMPERATURE (oC) 45 65 85 105 125 AMBIENT TEMPERATURE (oC) MAXM17624 STARTUP INTO PREBIAS (VIN = 5V, VPREBIAS = 2.5V, VOUT = 3.3V, FULL LOAD, PWM MODE) MAXM17623 STARTUP INTO PREBIAS (VIN = 5V, VPREBIAS = 0.8V, VOUT = 1.5V, FULL LOAD, PWM MODE) toc55 EN 25 toc56 5V/div 500mV/div 5V/div EN 2V/div VOUT VOUT 2V/div 2V/div LX LX 5V/div 200µs/div www.maximintegrated.com 5V/div PGOOD PGOOD 200µs/div Maxim Integrated │  10 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Pin Configuration TOP VIEW LX 1 10 IN OUTSNS 2 9 PGND FB 3 8 SGND PGOOD 4 7 EN MODE 5 6 OUT MAXM17623/ MAXM17624 INDICATES PIN 1 OF THE MODULE Pin Description PIN NAME 1 LX 2 OUTSNS 3 FB FUNCTION Switching Node of the Inductor. No external connection. Sense Pin for Module VOUT.  Connect to the positive terminal of the output capacitor COUT through a kelvin connection. Output Feedback Connection. Connect FB to the center of the external resistor-divider from OUT to SGND to set the output voltage. Open-Drain Power Good Output. Connect the PGOOD pin to the IN pin through an external pullup resistor to generate a “high” level if the output voltage is above 93.5% of the target regulated voltage. If not used, leave this pin unconnected. The PGOOD is driven low if the output voltage is below 90% of the target regulated voltage. 4 PGOOD 5 MODE 6 OUT 7 EN 8 SGND Signal GND Pin 9 PGND Power Ground Pin of the Converter. Connect externally to the power ground plane. Connect the SGND and PGND pins together at the ground return path of the VIN bypass capacitor. Refer to the MAXM17623/MAXM17624 Evaluation Kit data sheet for a layout example. 10 IN www.maximintegrated.com PWM or PFM Mode Selection Input. Connect the MODE pin to SGND to enable PWM-mode operation. Leave the MODE pin unconnected to enable PFM mode operation. Module Output Pin.  Connect the output capacitor COUT from OUT to PGND. Enable Input. Logic-high voltage on the EN pin enables the device, while logic-low voltage disables the device. Power-Supply Input. Decouple the IN pin to PGND with a capacitor; place the capacitor close to the IN and PGND pin. Maxim Integrated │  11 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Functional Diagram Internal Diagram MAXM17623/ MAXM17624 IN HIGH-SIDE DRIVER + EN 2V/0.8V LX 1.5µH/ 1µH OSCILLATOR CONTROLLER OUT LOW-SIDE DRIVER SOFT-START SGND OUTSNS CONTROLLER MODE LOGIC PGND MODE MODE SELECTION LOGIC FB www.maximintegrated.com SLOPE COMPENSATION PGOOD LOGIC PGOOD Maxim Integrated │  12 MAXM17623/MAXM17624 Detailed Description MAXM17623 and MAXM17624 are high-frequency synchronous step down DC-DC converter modules, with integrated MOSFETs, compensation components, and inductors, that operate over a 2.9V to 5.5V input voltage range. MAXM17623 and MAXM17624 support up to 1A load current and allow use of small, low cost input and output capacitors. The output voltage can be adjusted from 0.8V to 3.3V. When the EN pin is asserted, an internal power-up sequence ramps up the error-ampli­fier reference, resulting in output-voltage soft-start. The FB pin monitors the output voltage through a resistor-divider. The devices select either PFM or forced-PWM mode depending on the state of the MODE pin at power-up. By pulling the EN pin to low, the devices enter shutdown mode and consume only 0.1μA (typ) of standby current. The modules use an internally compensated, fixedfrequency, peak-current mode control scheme. On the falling edge of an internal clock, the high-side pMOSFET turns on, and continues to be on during normal operation until at least  the rising edge of the clock (for 40ns). An internal error amplifier compares the feedback voltage to a fixed internal reference voltage and generates an error voltage. The error voltage is compared to a sum of the current-sense voltage and a slope-compensation voltage by a PWM comparator to set the on-time. During the on-time of the pMOSFET, the inductor current ramps up. For the remainder of the switching period (off-time), the pMOSFET is kept off and the low-side nMOSFET turns on. During the off-time, the inductor releases the stored energy as the inductor current ramps down, providing current to the output. Under overload conditions, the cycle-by-cycle current-limit feature limits the inductor peak current by turning off the high-side pMOSFET and turning on the low-side nMOSFET. Mode Selection (MODE) The logic state of the MODE pin is latched after the EN pin goes above its rising threshold and all internal voltages are ready to allow LX switching. If the MODE pin is unconnected at power-up, the part operates in PFM mode at light loads. If the MODE pin is grounded at power-up, the part operates in con­stant-frequency PWM mode at all loads. State changes on the MODE pin are ignored during normal operation. www.maximintegrated.com 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules PWM Mode In PWM mode, the module output current is allowed to go negative. PWM operation is useful in frequency sensi­ tive applications and provides fixed switching frequency operation at all loads. However, PWM-mode of operation gives lower efficiency at light loads compared to PFMmode of operation. PFM Mode PFM mode of operation disables negative output current from the module and skips pulses at light loads for better efficiency. At low load currents, if the peak value of the inductor current is less than 350mA for 64 consecutive cycles, and the inductor current reaches zero, the part enters PFM mode. In PFM mode, When the FB pin voltage is below 0.8V, the high-side switch is turned-on until the inductor current reaches 500mA. After the high-side switch is turned OFF, the low-side switch is turned ON until the inductor current comes down to zero and LX enters a high-impedance state. If the FB pin voltage is greater than 0.8V for 3 consecutive CLK falling edges after LX enters a high-impedance state, the module continues to operate in PFM mode. In PFM mode, the part hibernates when the FB pin voltage is above 0.8V for 5 consecutive switching cycles after LX enters a highimpedance state. If the FB pin voltage drops below 0.8V within 3 consecutive CLK falling edges after LX enters a high-impedance state, the part comes out of PFM mode. EN Input (EN), Soft-Start When EN voltage is above 2V (min), the internal erroramplifier reference voltage starts to ramp up. The duration of the soft-start ramp is 1ms (typ), allowing a smooth increase of the output voltage. Driving EN low disables both power MOSFETs, as well as other internal circuitry, and reduces IN quiescent current to below 0.1μA. Power Good (PGOOD) The devices include an open-drain power good output that indicates the output voltage status. PGOOD goes high when the output voltage is above 93.5% of the target value, and goes low when the output voltage is below 90% of the target value. During start-up, the PGOOD pin goes high after 184μs of soft-start completion. Startup into a Prebiased Output The devices are capable of soft-start into a prebiased out­ put, without discharging the output capacitor in both the PFM and forced-PWM modes. Such a feature is useful in applications where digital integrated circuits with multiple rails are powered. Maxim Integrated │  13 MAXM17623/MAXM17624 Overcurrent Protection The MAXM17623/MAXM17624 are provided with a robust overcurrent protection (OCP) scheme that protects the modules under overload and output short-circuit conditions. When overcurrent is detected in the inductor, the switches are controlled by a mechanism, which detects both the high-side MOSFET and low-side MOSFET currents and compares them with the respective limits. Whenever the inductor current exceeds the internal peak current limit of 1.7A (typ), the high-side MOSFET is turned OFF and the low-side MOSFET is turned ON. The low side MOSFET is kept ON until the subsequent CLK rising edge after the inductor current drops below 1.4A (typ). The high-side MOSFET is turned ON after the low-side MOSFET is turned OFF and the cyclic operation continues. When the overload condition is removed, the part regulates output to the set voltage. The MAXM17623/MAXM17624 are designed to support a maximum load current of 1A. The inductor ripple current is calculates as follows. For MAXM17623: ∆I  VIN − VOUT − 0.191× I OUT   VOUT + 0.236 × I OUT    ×  V − 0.13 × I  L × f SW IN OUT     For MAXM17624: ∆I  VIN − VOUT − 0.157 × I OUT   VOUT + 0.202 × I OUT    ×  V − 0.13 × I  L × f SW IN OUT     2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Thermal Overload Protection Thermal overload protection limits the total power dis­ sipation in the device. When the junction temperature exceeds +165°C, an on-chip thermal sensor shuts down the device, turns off the internal power MOSFETs, allow­ ing the device to cool down. The thermal sensor turns the device on after the junction temperature cools by 10°C. Applications Information Selection of Input Capacitor The input filter capacitor reduces peak currents drawn from the power source and reduces noise and voltage ripple on the input caused by the circuit’s switching. The input capacitor RMS current requirement (IRMS) is defined by the following equation: = IRMS I OUT(MAX) × VOUT × (VIN − VOUT ) VIN where IOUT(MAX) is the maximum load current. IRMS has a maximum value when the input voltage equals twice the output voltage (VIN = 2 x VOUT), so IRMS(MAX) = IOUT(MAX)/2. Choose an input capacitor that exhibits less than +10°C temperature rise at the RMS input current for optimal long-term reliability. Use low-ESR ceramic capacitors with high-ripple-current capability at the input. X7R capacitors are recommended in industrial applications for their temperature stability. Calculate the input capacitance using the following equation: Where: VOUT = Steady-state output voltage VIN = Operating input voltage fSW = Switching Frequency L = Power module output inductance (1.5μH ±20% for MAXM17623, 1μH ±20% for MAXM17624) IOUT = Required output (load) current The following condition should be satisfied at the desired load current (IOUT): = C IN I OUT(MAX) × D × (1 − D) η × f SW × ∆VIN where, D = Duty ratio of the converter fSW = Switching frequency ∆VIN = Allowable input voltage ripple η = Efficiency ∆I IOUT + 2 < 1.8 www.maximintegrated.com Maxim Integrated │  14 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Selection of Output Capacitor Small ceramic X7R-grade capacitors are sufficient and recommended for the device. The output capacitor has two functions. It filters the square wave generated by the device along with the internal inductor. It stores sufficient energy to support the output voltage under load transient conditions and stabilizes the device’s internal control loop. Usually the output capacitor is sized to support a step load of 50% of the maximum output current in the application, such that the output-voltage deviation is less than 3%. Derating of ceramic capacitors with DC-voltage must be considered while selecting the output capacitor. Refer to Table 1 for recommended output capacitors. OUT MAXM17623/ MAXM17624 R1 FB R2 Figure 1. Setting the Output Voltage Adjusting the Output Voltage The MAXM17623/MAXM17624 output voltage can be programmed from 0.8V to 3.3V. Set the output voltage by connecting a resistor-divider from output to FB to GND (see Figure 2). LX Choose R2 to be less than 37.4kΩ and calculate R1 with the following equation: V  R1 = R 2 ×  OUT − 1  0.8  1 + MAXM17623/ MAXM17624 10 IN OUTSNS 2 9 PGND FB 3 8 SGND PGOOD 4 7 EN MODE 5 6 OUT CIN COUT R2 R1 Figure 2. Layout Guidelines Table 1. Selection of Components PART NUMBER V IN(MIN) (V) V IN(MAX) (V) V OUT (V) C IN C OUT R1 R2 2.9 5.5 0.8 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 22μF 0805 6.3V GRM21BZ70J226ME44# 0Ω 37.4kΩ 2.9 5.5 1.0 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 22μF 0805 6.3V GRM21BZ70J226ME44# 9.53kΩ 37.4kΩ 2.9 5.5 1.2 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 22μF 0805 6.3V GRM21BZ70J226ME44# 19.1kΩ 37.4kΩ 2.9 5.5 1.5 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 22μF 0805 6.3V GRM21BZ70J226ME44# 33.2kΩ 37.4kΩ 2.9 5.5 1.5 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 10μF 0805 16V GRM21BZ71C106KE15# 33.2kΩ 37.4kΩ 2.9 5.5 1.8 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 10μF 0805 16V GRM21BZ71C106KE15# 49.9kΩ 37.4kΩ 2.9 5.5 2.5 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 10μF 0805 16V GRM21BZ71C106KE15# 86.6kΩ 37.4kΩ 3.6 5.5 3.3 1 x 2.2μF 0603 10V GRM188R71A225KE15 1 x 10μF 0805 16V GRM21BZ71C106KE15# 118kΩ 37.4kΩ MAXM17623 MAXM17624 www.maximintegrated.com Maxim Integrated │  15 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Power Dissipation PCB Layout Guidelines The power dissipation inside the module leads to an increase in the junction temperature of the MAXM17623 and MAXM17624. The power loss inside the modules at full load can be estimated as follows: PLOSS = POUT × [ 1η − 1] Where η is the efficiency of the power module at the desired operating conditions. The junction temperature TJ of the module can be estimated at any given maximum ambient temperature TA from the following equation: TJ = TA + [θJA × PLOSS] For the MAXM17623/MAXM17624 evaluation board, the thermal resistance from Junction to Ambient (θJA) is 77°C/W. Operating the module at Junction temperatures greater than +125°C degrades operating lifetimes. An EE-SIM model is available for the MAXM17623/ MAXM17624, to simulate efficiency and power loss for the desired operating conditions. Careful PCB layout is critical to achieving low switching losses and clean, stable operation. Use the following guidelines for good PCB layout: ●● Keep the input capacitors as close as possible to the IN and PGND pins. ●● Keep the output capacitors as close as possible to the OUT and PGND pins. ●● Keep the resistive feedback divider as close as possible to the FB pin. ●● Connect all of the PGND connections to a copper plane area as large as as possible on the top and bottom layers. ●● Use multiple vias to connect internal PGND planes to the top layer PGND plane. ●● Keep the power traces and load connections short. This practice is essential for high efficiency. Using thick copper PCBs (2oz vs. 1oz) can enhance fullload efficiency. Correctly routing PCB traces is a difficult task that must be approached in terms of fractions of centimeters, where a single mΩ of excess trace resistance causes a measurable efficiency penalty. Typical Application Circuits Typical Application Circuit (0.8V, 1A) VIN 2.9V TO 5.5V CIN 2.2µF MAXM17623 IN EN PGOOD www.maximintegrated.com OUTSNS OUT PGND MODE FB SGND LX 0.8V, 1A COUT 22µF VOUT R1 0Ω R2 37.4kΩ Maxim Integrated │  16 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Application Circuits (continued) Typical Application Circuit (1.5V, 1A) VIN 2.9V TO 5.5V CIN 2.2µF MAXM17623 IN OUTSNS EN OUT PGOOD PGND MODE 1.5V, 1A COUT 22µF VOUT R1 33.2kΩ FB R2 37.4kΩ LX SGND Typical Application Circuit (1.5V, 1A) VIN 2.9V TO 5.5V CIN 2.2µF MAXM17624 IN EN PGOOD www.maximintegrated.com OUTSNS OUT PGND MODE FB SGND LX 1.5V, 1A COUT 10µF VOUT R1 33.2kΩ R2 37.4kΩ Maxim Integrated │  17 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Typical Application Circuits (continued) Typical Application Circuit (3.3V, 1A) VIN 3.6V TO 5.5V CIN 2.2µF MAXM17624 IN EN PGOOD MODE SGND OUTSNS OUT PGND 3.3V, 1A COUT 10µF VOUT R1 118kΩ FB LX R2 37.4kΩ Ordering Information PART NUMBER TEMP RANGE PIN-PACKAGE V OUT (V) MAXM17623AMB+ -40ºC to +125ºC 10-pin 2.6mm x 2.1mm x 1.3mm uSLIC package 0.8 to 1.5 MAXM17623AMB+T -40ºC to +125ºC 10-pin 2.6mm x 2.1mm x 1.3mm uSLIC package 0.8 to 1.5 MAXM17624AMB+ -40ºC to +125ºC 10-pin 2.6mm x 2.1mm x 1.3mm uSLIC package 1.5 to 3.3 MAXM17624AMB+T -40ºC to +125ºC 10-pin 2.6mm x 2.1mm x 1.3mm uSLIC package 1.5 to 3.3 + Denotes a lead(Pb)-free/RoHS-compliant package. T Denotes tape-and-reel. www.maximintegrated.com Maxim Integrated │  18 MAXM17623/MAXM17624 2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules Revision History REVISION NUMBER REVISION DATE PAGES CHANGED DESCRIPTION 0 12/18 Initial release 1 2/19 Updated TOC05, TOC17, and Table 1 4–5, 14 — 2 6/19 Updated the Package Information section, and TOC36 and TOC40; replaced TOC01‒ TOC06 and TOC 46‒TOC48 2, 4, 7–9 3 1/20 Updated the Electrical Characteristics, Typical Operating Characteristics, Pin Configuration, and Pin Description sections; updated TOC46–TOC50; added new TOC02, TOC04, TOC05, TOC08, TOC10 and TOC11, and renumbered remaining TOCs 2–10, 17 For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2020 Maxim Integrated Products, Inc. │  19 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAXM17624AMB+T MAXM17623AMB+T
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