MAX16999 Ultra-Low Output Voltage, Low-Quiescent-Current Linear Regulator for High-Temperature Applications General Description Features The MAX16999 linear regulator operates from a 2.5V to Preset 0.5V to 3.3V Output Voltage Range 5.5V input voltage and delivers 100mA continuous load Up to 100mA Output Current at T = +125C A current with a low quiescent current typically around 13A Quiescent Current 13A. The output voltage is preset to internally trimmed voltages in the 0.5V to 3.3V range (see the Selector Logic-Controlled Enable Guide). An active-low, open-drain reset output remains Adjustable POR Delay Flag low for a programmable timeout delay after the output Short to GND Protection on Reset Timer voltage reaches regulation. The reset timeout is pro- Used in Parallel with High-Current Supply of Equal grammed by an external capacitor connected to CRES. Voltages This device also features logic-controlled shutdown, and Thermal-Overload and Short-Circuit Protection short-circuit and thermal-overload protection. The typical applications are multimedia, telematics, and motor control Tiny 8-Pin MAX Package with Exposed Pad microcontrollers (Cs) with always-on requirements. The MAX16999 is used as a parallel, lowquiescent supply to power the core or interrupt section of Cs during sleep Ordering Information mode. It can also be used to supply a timer or memory PART* TEMP RANGE PIN-PACKAGE during C shutoff. The adjustable POR delay assists with power-supply sequencing. MAX16999AUA + -40C to +125C 8 MAX-EP** *Insert the desired two-digit suffix (see the Selector Guide) into Applications the blanks to complete the part number. Contact the factory for Industrial other output voltages or other package options. SDRAM Power Supplies +Denotes a lead(Pb)-free/RoHS-compliant package. Keep-Alive Timers **EP = Exposed pad. Handheld/Portable Devices Selector Guide appears at end of data sheet. Typical Operating Circuit Pin Configuration OUTPUT INPUT TOP VIEW 2.5V TO 5.5V 0.5V TO 3.3V IN OUT C C IN OUT 1F 4.7F + OUT 1 8 IN MAX16999 LOGIC OUT 2 7 IN SUPPLY MAX16999 ON EN CRES CRES 3 6 EN C CRES 15nF * RESET 4 5 GND OFF MAX RESET TO CONTROLLER EP GND *EXPOSED PAD MAX is a registered trademark of Maxim Integrated Products, Inc. 19-4114 Rev 2 2/15MAX16999 Ultra-Low Output Voltage, Low-Quiescent-Current Linear Regulator for High-Temperature Applications Absolute Maximum Ratings IN, RESET to GND ...............................................-0.3V to +6.0V Package Junction-to-Ambient Thermal Resistance ( ) JA OUT, CRES, EN to GND ............................-0.3V to (V + 0.3V) (single-layer PCB) .......................................................97C/W IN Output Short-Circuit Duration ....................................Continuous Package Junction-to-Ambient Thermal Resistance ( ) JA Continuous Power Dissipation (T = +70C) (Note 1) (multilayer PCB) .......................................................77.6C/W A (derate 10.3mW/C above +70C) Operating Temperature Range ......................... -40C to +125C MAX (single-layer PCB) .........................................824.7mW Junction Temperature ......................................................+150C (derate 12.9mW/C above +70C) Storage Temperature Range ............................ -60C to +150C MAX (multilayer PCB) ..........................................1030.9mW Lead Temperature (soldering, 10s) .................................+300C Package Junction-to-Case Thermal Resistance ( ) ...4.8C/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. DC Electrical Characteristics (For devices with V 1.5V, V = 3.3V. For devices with V > 1.5V, V = 5V. EN = IN, T = -40C to +125C, C = 1F, C OUT IN OUT IN J IN OUT = 4.7F, C = 1000pF, unless otherwise noted. Typical values are at T = +25C.) (Note 2) CRES A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS IN Operating Voltage V 2.5 5.5 V IN IN Undervoltage-Lockout (UVLO) V V rising 1.94 2.2 V UVLO IN Threshold IN UVLO Hysteresis 45 mV V 1.5V, OUT -2.5 +2.5 I = 1mA to 80mA OUT Output-Voltage Accuracy V = V + 2V % IN OUT V > 1.5V, OUT -2.5 +2.5 I = 1mA to 100mA OUT Current Limit I OUT = GND 105 150 mA LIM I = 100A 13 20 OUT Ground Current I A Q I = 100mA 23 OUT Dropout Voltage V - V I = 80mA, V = 3.3V (Note 3) 0.035 0.1 V IN OUT OUT OUT Load Regulation V /I I = 1mA to 80mA 0.1 mV/mA OUT OUT OUT V < 1V, OUT 0.4 2.5V < V < 5.5V IN Line Regulation V /V I = 80mA mV/V OUT IN OUT V 1V, (V + OUT OUT 1.8 1.5V) < V < 5.5V IN I = 10mA, f = 100Hz 70 OUT Power-Supply Rejection Ratio PSRR 500mV , V - dB P-P IN f = 100kHz 40 V > 1.5V OUT Maxim Integrated 2 www.maximintegrated.com