EVALUATION KIT AVAILABLE MAX5087 45V, 400mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay General Description Features Wide Operating Input Voltage Range (6.5V to 45V) The MAX5087 high-voltage linear regulator operates from an input voltage of 6.5V to 45V and delivers up Thermally Enhanced Package Dissipates 2.6W at T = +70C (16-Pin TQFN) to 400mA of output current. The device consumes only A 70A of quiescent current with no load and 11A in Guaranteed 400mA Output Current shutdown. The device includes a SET input, that when 70A Quiescent Supply Current connected to ground, selects a preset output voltage of Preset 3.3V, 5.0V, or Adjustable 2.5V to 11V Output 3.3V (MAX5087A) or 5.0V (MAX5087B). Alternatively, the Voltage output voltage can be adjusted from 2.5V to 11V by simply Remote Load Sense Capability connecting SET to the regulators output through a resis- Enable Input tive divider network. The MAX5087 also provides an open- Integrated P Reset Circuit with Programmable drain, active-low microprocessor (P) reset output that Timeout Period asserts when the regulator output drops below the preset output voltage threshold. An external capacitor programs Thermal and Short-Circuit Protection the reset timeout period. Other features include an enable -40C to +125C Operating Temperature Range input, thermal shutdown, and short-circuit protection. Ordering Information The MAX5087 operates over the automotive temperature range of -40C to +125C and is available in a 16-pin OUTPUT PART PIN-PACKAGE TQFN thermally enhanced package. VOLTAGE (V) MAX5087AATE+ 16 TQFN-EP* 3.3 Applications MAX5087BATE+ 16 TQFN-EP* 5.0 Industrial MAX5087BATE/V+ 16 TQFN-EP* 5.0 Home Security/Safety Networking Note: All devices are specified over the -40C to +125C oper- ating temperature range. *EP = Exposed paddle. +Denotes lead-free package. Pin Configuration TOP VIEW 12 11 10 9 N.C. 13 8 GND N.C. 14 7 OUTSENSE MAX5087 N.C. 15 6 OUT N.C. 16 5 OUT + 1 2 3 4 TQFN 19-3964 Rev 6 5/14 N.C. N.C. EN CT IN RESET SET INMAX5087 45V, 400mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Absolute Maximum Ratings IN to GND (do not exceed package power Maximum Current into Any Pin (Except IN, OUT).............20mA dissipation)..........................................................-0.3V to +50V Continuous Power Dissipation (T = +70C) A IN to GND (T 300ms, I 250mA)..................-0.3V to +42V 16-Pin TQFN (derate 33.3mW/C above +70C).......2666mW OUT EN to GND..............................................................-0.3V to +50V Operating Temperature Range...........................-40C to +125C RESET, OUT, OUTSENSE to GND.........................-0.3V to +12V Junction Temperature.......................................................+150C IN to OUT................................................................-0.3V to +50V Storage Temperature Range..............................-60C to +150C CT, SET TO GND....................................................-0.3V to +35V Lead Temperature (soldering, 10s)...................................+300C Short-Circuit Duration (V 14V)..............................Continuous IN 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 Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( )........30.0C/W Junction-to-Case Thermal Resistance ( )..................2C/W JA 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. Electrical Characteristics (V = 14V, I = 1mA, C = 47F (low ESR), C = 15F, V = 2.4V, 10k from RESET to OUT, T = T = -40C to +125C, IN OUT IN OUT EN A J unless otherwise noted. Typical specifications are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range V V V + 1.5V 6.5 45.0 V IN IN OUT I = 0 70 150 Measured at GND, OUT Supply Current I A Q SET = GND I = 400mA 5300 OUT Shutdown Supply Current I V P 0.4V 11 21 A SHDN EN REGULATOR Guaranteed Output Current I V = 6.5V, V = 5.0V 400 mA OUT IN OUT 6.5V P V 25V, IN 4.87 5 5.13 5mA P I 400mA SET = GND, OUT 5V version 6.5V P V 45V, IN 4.850 5 5.150 5mA P I 100mA OUT Output Voltage (Note 3) V V 6.5V P V 25V, OUT IN 3.208 3.3 3.392 5mA P I 400mA SET = GND, OUT 3.3V version 6.5V P V 45V, IN 3.208 3.3 3.392 5mA P I 100mA OUT I = 5mA, adjustable range 2.5 11.0 OUT Dropout Voltage V I = 400mA, V = 5V (Note 4) 0.9 2.2 V DO OUT OUT Rising edge of V to V , IN OUT Startup Response Time 400 s R = 500, SET = GND (Note 5) L 5V version -1 +1 V / OUT Line Regulation 8V V 45V mV/V IN V IN 3.3V version -0.5 +0.5 V = high, regulator on 2.4 EN Enable Voltage V V EN V = low, regulator off 0.4 EN Maxim Integrated 2 www.maximintegrated.com