Click here for production status of specific part numbers. MAX20004/MAX20006/ 36V, 220kHz to 2.2MHz, 4A/6A/8A MAX20008 Fully Integrated Automotive Step-Down Converters General Description Benefits and Features The MAX20004/MAX20006/MAX20008 are small, synchro- Multiple Functions for Small Size nous, automotive buck converter devices with integrated Operating V Range of 3.5V to 36V IN high-side and low-side MOSFETs. The device family can 25A Quiescent Current in Skip Mode Synchronous DC-DC Converter with deliver up to 8A with input voltages from 3.5V to 36V, while using only 25A quiescent current at no load. Voltage qual- Integrated FETs 220kHz to 2.2MHz Adjustable Frequency ity can be monitored by observing the RESET signal. The devices can operate in dropout by running at 98% duty Fixed 5ms Internal Soft-Start Programmable 1V to 10V Output, or 3.3V and cycle, making them ideal for automotive applications. 5.0V Fixed-Output Options Available The devices offer fixed output voltages of 5V and 3.3V, 98% Duty-Cycle Operation with Low Dropout along with the ability to program the output voltage between RESET Output 1V and 10V. Frequency is resistor programmable from High Precision 220kHz to 2.2MHz. The devices offer a forced fixed-fre- 2% Output-Voltage Accuracy quency PWM mode (FPWM) and skip mode with ultra-low Good Load-Transient Performance quiescent current. The devices can be factory programmed to enable spread-spectrum switching to reduce EMI. Robust for the Automotive Environment Current-Mode, Forced-PWM and Skip Operation The MAX20004/MAX20006/MAX20008 are available in a Overtemperature and Short-Circuit Protection small, 3.5mm x 3.75mm, 17-pin FC2QFN package and use 3.5mm x 3.75mm 17-Pin FC2QFN very few external components. -40C to +125C Operating Temperature Range 40V Load-Dump Tolerant Applications AEC-Q100 Qualified Point-of-Load (PoL) Applications in Automotive Distributed DC Power Systems Navigation and Radio Head Units Ordering Information appears at end of data sheet. Typical Application Circuit VOUT VIN SUPSW 20k 4.7F 0.1F SUP RESET SYNC EN 12k FOSC OUT 0.1F BST 1.0H V COMP OUT LX 22k BIAS 94F 2.2F 1nF 4.7pF PGND BIAS GND FB 19-100239 Rev 6 2/19MAX20004/MAX20006/ 36V, 220kHz to 2.2MHz, 4A/6A/8A MAX20008 Fully Integrated Automotive Step-Down Converters Absolute Maximum Ratings SUP, EN, SUPSW to PGND ..................................-0.3V to +40V Output Short-Circuit Duration ....................................Continuous LX to PGND (Note 1) ........................ -0.3V to (V + 0.3V) Continuous Power Dissipation (T = +70C) SUPSW A BIAS, RESET to GND ..........................................-0.3V to +6.0V 17-Pin FC2QFN (derate 29.4mW/C > 70C) .......... 2553mW FOSC, COMP to GND............................-0.3V to (V + 0.3V) Operating Temperature Range ......................... -40C to +125C BIAS SYNC, FB to GND ..................................-0.3V to (V + 0.3V) Junction Temperature ......................................................+150C BIAS GND to PGND ......................................................-0.3V to +0.3V Storage Temperature Range ............................ -65C to +150C OUT to PGND .......................................................-0.3V to +12V Lead Temperature Range ................................................+300C BST to LX ...............................................................-0.3V to +6V Soldering Temperature (reflow) .......................................+260C LX Continuous RMS Current ..................................................8A 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. Note 1: Self-protected from transient voltages exceeding these limits in circuit under normal operation. Package Information 17 FC2QFN Package Code F173A3FY+1 Outline Number 21-100155 Land Pattern Number 90-100056 Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 27C/W JA Junction to Case ( ) 2.6C/W JC 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. Package thermal resistances were obtained using the EV kit. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = V = V = 14V. T = T = -40C to +125C, unless otherwise noted. Typical values are at T = +25C under normal SUP SUPSW EN A J A conditions, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V , SUP Supply Voltage Range 3.5 36 V V SUPSW V , SUP Supply Voltage Range After startup 3.0 V V SUPSW V = 3.3V 25 32 OUT Supply Current I Skip mode, no load A SUP V = 5.0V 30 42 OUT Shutdown Supply Current I V = 0V 5 10 A SHDN EN V = V = 6V to 40V I < 10mA, SUP SUPSW BIAS BIAS Regulator Voltage V 5 V BIAS BIAS not switched over to V OUT BIAS Undervoltage V V rising 2.7 3 3.3 V UVBIAS BIAS Lockout Maxim Integrated 2 www.maximintegrated.com