EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAXM17633/MAXM17634/ 4.5V to 36V, 2A Himalaya uSLIC MAXM17635 Step-Down Power Modules General Description Benefits and Features The Himalaya series of voltage regulator ICs and power Easy to Use modules enable cooler, smaller, and simpler power Wide 4.5V to 36V Input supply solutions. The MAXM17633, MAXM17634, and Adjustable 0.9V to 12V Output (MAXM17635) MAXM17635 are a family of high-frequency synchronous Fixed 3.3V and 5V Output Versions step-down DC-DC converter modules with integrated con- (MAXM17633 and MAXM17634) troller, MOSFETs, compensation components, and induc- 400kHz to 2.2MHz Adjustable Frequency with tor, that operate over a wide input voltage range. The mod- External Clock Synchronization ules operate from 4.5V to 36V input and deliver up to 2A out- 1.2% Feedback Accuracy put current. MAXM17633 and MAXM17634 are fixed 3.3V Up to 2A Output Current and 5V output modules, respectively. The MAXM17635 Internally Compensated is an adjustable-output voltage (0.9V to 12V) module. All Ceramic Capacitors The modules significantly reduce design complexity, High Efficiency manufacturing risks, and offer a true plug-and-play power Selectable PWM, PFM, or DCM Mode of Operation supply solution, reducing time to market. Shutdown Current as Low as 2.8A (typ) The MAXM17633/MAXM17634/MAXM17635 modules employ peak-current-mode control architecture. To reduce Flexible Design input inrush current, the devices offer a programmable Programmable Soft-Start and Prebias Startup soft-start time. Open-Drain Power Good Output (RESET Pin) Programmable EN/UVLO Threshold The MAXM17633/MAXM17634/MAXM17635 modules are available in a low profile, compact 24-pin, 4mm x 4mm x Robust Operation 1.75mm, uSLIC package. Hiccup Overcurrent Protection Overtemperature Protection Applications -40C to +125C Ambient Operating Temperature/ Industrial Control Power Supplies -40C to +150C Junction Temperature General-Purpose Point-of-Load Rugged Distributed Supply Regulation Complies with CISPR22(EN55022) Class B Base Station Power Supplies Conducted and Radiated Emissions Programmable Logic Controller Passes Drop, Shock, and Vibration Standards: High Voltage Single-Board Systems JESD22-B103, B104, B111 Ordering Information appears at end of data sheet. Typical Application Circuit V V IN OUT 7V TO 36V 5V, 2A IN OUT C1 C2 22F 4.7F EN/UVLO EXTVCC VCC FB VCC MAXM17634 C3 MODE/SYNC BST 2.2F C5 0.1F SS LX C4 5600pF RT RESET R3 19.1k C1 = GRM31CR71H475KA12 SGND PGND C2 = GRM32ER71E226KE15 fSW = 1MHz uSLIC is a trademark of Maxim Integrated Products, Inc. 19-100594 Rev 0 7/19MAXM17633/MAXM17634/ 4.5V to 36V, 2A Himalaya uSLIC MAXM17635 Step-Down Power Modules Absolute Maximum Ratings IN to PGND ...........................................................-0.3V to +40V SS, MODE/SYNC, RESET, V , RT to SGND ..-0.3V to +6.5V CC EN/UVLO to SGND ....................................-0.3V to (V + 0.3V) PGND to SGND.................................................... -0.3V to +0.3V IN LX, OUT to PGND ......................................-0.3V to (V + 0.3V) Output Short-Circuit Duration ....................................Continuous IN EXTVCC to SGND ...............................................-5.5V to +6.5V Operating Temperature Range (Note 1) ........... -40C to +125C BST to PGND .....................................................-0.3V to +46.5V Junction Temperature ....................................... -40C to +150C BST to LX .............................................................-0.3V to +6.5V Storage Temperature Range ............................ -65C to +150C BST to V ...........................................................-0.3V to +40V Lead Temperature (soldering, 10s) .................................+260C CC FB to SGND (MAXM17633 and MAXM17634) ....-5.5V to +6.5V Soldering Temperature (reflow) .......................................+260C FB to SGND (MAXM17635) .................................-0.3V to +6.5V 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: 24-PIN uSLIC Package Code M244A4+1 Outline Number 21-100342 Land Pattern Number 90-100115 THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2) Junction to Ambient ( ) 25C/W JA 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 +125C degrades operating lifetimes. Note 2: Package thermal resistance is measured on an evaluation board with natural convection. Electrical Characteristics (V = V = 24V, R = Unconnected, C = 2.2F, V = V = V = V = 0V V = 3.67V IN EN/UVLO RT VCC SGND PGND MODE/SYNC EXTVCC FB (MAXM17633), V = 5.5V (MAXM17634), V = 1V (MAXM17635), LX = SS = RESET = OPEN, V to V = 5V, T = -40C to FB FB BST LX A 125C, unless otherwise noted. Typical values are at T = +25C. All voltages are referenced to SGND, unless otherwise noted.) (Note 3) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY (V ) IN Input Voltage Range V 4.5 36 V IN Input Shutdown Current I V = 0V (shutdown mode) 2.8 4.5 A IN-SH EN/UVLO R = 19.1k, MODE/SYNC = OPEN, RT I 110 Q PFM V = 5V EXTVCC A R = 19.1k, MODE/SYNC = V , RT CC Input Quiescent Current I 710 Q DCM V = 5V EXTVCC R = 19.1k, MODE/SYNC = SGND, RT I 13 mA Q PWM V = 5V EXTVCC Maxim Integrated 2 www.maximintegrated.com