EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX16920 Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator General Description Features The MAX16920 power-management IC integrates 5.5V to 28V Wide Operating Voltage Range three high-voltage step-down DC-DC converters, one Tolerates Input Voltage Transients Up to 45V high-voltage linear regulator, and an overvoltage Three High-Voltage Buck Converters with High protection block. The three step-down converters deliver Efficiency up to 150mA, 600mA, and 1.5A, while the linear regulator DC-DC1: 150mA (max), Always-On, Ultra-Low is capable of up to 150mA. The MAX16920 is designed Quiescent Current (25A) to operate with input voltages between 5.5V to 28V and 3.3V Fixed or Adjustable from 1.22V to 5V survive voltage transients to 45V, making it ideal for automotive applications. DC-DC2: 600mA (max), 5.0V Fixed or Adjustable Output Voltage from 1.22V to 5V The MAX16920 is optimized for high efficiency and low standby current. The MAX16920A features 400kHz DC-DC3: 1.5A (max), 3.3V Fixed or Adjustable from switching frequency, while the MAX16920B features 2MHz 1.22V to 8.0V switching frequency. The MAX16920 can be ordered One High-Voltage 5V Linear Regulator (150mA) with spread-spectrum frequency modulation. The DC-DC pMOS Driver Output with Fixed Overvoltage converters can also be synchronized to an external Shutdown frequency reference using the SYNC input minimize EMI. 400kHz (MAX16920A) or 2MHz (MAX16920B) The MAX16920 includes power-good outputs (PG ) for Switching Frequency DC-DC2, DC-DC3, LDOA, and a power-on reset (POR) Frequency Synchronization Input for DC-DC1. All regulators other than DC-DC1 have an enable input (EN ). DC-DC1 always operates when Open-Drain Power-Good Outputs for DC-DC2, power is applied to the MAX16920. DC-DC3, LDOA, and Power-On Reset for DC-DC1 Enable Inputs for DC-DC2, DC-DC3, and LDO The MAX16920 operates over the -40C to +125C temperature range, and is available in a compact, Internal Soft-Start thermally enhanced 32-pin TQFN package (7mm x 7mm). 2% Undervoltage Comparator Overtemperature Shutdown Applications -40C to +125C Operating Temperature Range Automotive Radios Automotive Navigation Systems Compact 32-Pin TQFN Package (7mm x 7mm) Ordering Information SWITCHING POR DELAY PART TEMP RANGE PIN-PACKAGE FREQUENCY (ms) MAX16920AATJ/V+* -40C to +125C 400kHz 5.1 32 TQFN-EP** MAX16920AATJS/V+* -40C to +125C 400kHz 5.1 32 TQFN-EP** MAX16920BATJ/V+ -40C to +125C 2.2MHz 7.5 32 TQFN-EP** MAX16920BATJS/V+* -40C to +125C 2MHz 8 32 TQFN-EP** /V denotes an automotive qualified part. +Denotes a lead(Pb)-free/RoHS-compliant package. *Future productcontact factory for availability. **EP = Exposed pad. Contact the factory for other POR options. 19-5718 Rev 2 2/19MAX16920 Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator Absolute Maximum Ratings OUT1, OUT2, FB1, FB2, FB3, POR, PG2, BST1, BST2, BST3 to PGND (500ms) ...............-0.3V to +50V PG3, PGA, OT to GND........................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A UVO, EN2, EN3, ENA, OUTA, SYNC, V to GND ..-0.3V to +6V TQFN (derate 37mW/C above +70C)..................... 2963mW L UVI, UVS to GND ..................................................-0.3V to +20V Operating Temperature Range ......................... -40C to +125C UVI, UVS Input Current ....................................................10mA Junction Temperature ......................................................+150C OUT3 to GND ........................................................-0.3V to +10V Storage Temperature Range ............................ -65C to +150C V , V , ODRV, LX1, LX2, Lead Temperature (soldering, 10s) .................................+300C INA INB LX3 to GND (500ms) ........................................... -0.3V to +45V Soldering Temperature (reflow) .......................................+260C V to V .............................................................-2V to +18V INA INB (Note 1) Package Thermal Characteristics TQFN Junction-to-Ambient Thermal Resistance ( ) ..........27C/W JA Junction-to-Case Thermal Resistance ( ) .................1C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. 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. Electrical Characteristics (V = V = 14V, T = -40C to +125C, unless otherwise noted. Typical values are at T = +25C.) (Note 2) INA INB A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Full performance 5.5 18 V /V Operating Supply Range V V INA INB IN DC-DC1 maintains regulation, 4 28 I = 100mA (Note 2) OUT1 EN2 = EN3 = ENA = high, V /V Supply Current in Operation I 2 3 mA INA INB IN no switching V /V Supply Current, Only DC-DC1 operating, EN2 = EN3 INA INB I 25 50 A ST Standby Mode = ENA = low, I = no load OUT1 V Undervoltage Lockout V V rising 2.9 3.15 3.4 V L UVL L V Undervoltage Lockout Hysteresis V 0.4 V L UVH V Output Voltage V 5 V L L 1.181 1.229 UVI Threshold UVL V /V falling 1.205 V INA INB (-2%) (+2%) UVI Input Current I V = 1.2V 1 A UVI UVI UVI Hysteresis UVH 10 20 30 mV UVS Switch Resistance R 1100 1540 2100 UVS Temperature rising, OT output Thermal Shutdown Temperature T 155 170 C S asserted (Note 3) Thermal Shutdown Hysteresis T (Note 3) 10 20 C H OVERVOLTAGE GATE DRIVER Input voltage rising, ODRV output Overvoltage Shutdown Level V 18.7 19.2 19.7 V OV turns off external pMOSFET Overvoltage Shutdown Level V Input voltage falling 18.1 V OV,F Maxim Integrated 2 www.maximintegrated.com