LT8410/LT8410-1 Ultralow Power Boost Converter with Output Disconnect FEATURES DESCRIPTION n Ultralow Quiescent Current The LT 8410/LT8410-1 are ultralow power boost converters 8.5A in Active Mode with integrated power switch, Schottky diode and output 0A in Shutdown Mode disconnect circuitry. The parts control power delivery by n Comparator Built into SHDN Pin varying both the peak inductor current and switch off- n Low Noise Control Scheme time. This control scheme results in low output voltage n Adjustable FB Reference Voltage ripple as well as high efficiency over a wide load range. n Wide Input Range: 2.5V to 16V The quiescent current is a low 8.5A, which is further n Wide Output Range: Up to 40V reduced to 0A in shutdown. The internal disconnect n Integrated Power NPN Switch circuitry allows the output voltage to be blocked from the 25mA Current Limit (LT8410) input during shutdown. High value (12.4M/0.4M) resis- 8mA Current Limit (LT8410-1) tors are integrated on chip for output voltage detection, n Integrated Schottky Diode significantly reducing input referred quiescent current. The n Integrated Output Disconnect LT8410/ LT8410-1 also features a comparator built into the n High Value (12.4M/0.4M) Feedback Resistors SHDN pin, overvoltage protection for the CAP and V OUT Integrated pins, built in soft-start and comes in a tiny 8-pin 2mm n Built in Soft-Start (Optional Capacitor from V 2mm DFN package. REF to GND) L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Overvoltage Protection for CAP and V Pins OUT Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131. n Tiny 8-Pin 2mm 2mm DFN Package APPLICATIONS n Sensor Power n RF Mems Relay Power n General Purpose Bias TYPICAL APPLICATION Output Voltage Ripple General Purpose Bias with Wide Input Voltage vs Load Current Efficiency vs Load Current 10 100 V IN 100H V = 3.6V IN 2.5V to 16V V = 12V IN 90 8 2.2F 0.1F SW CAP V = 5V IN V = 16V 80 OUT V V CC OUT 6 V = 3.6V IN LT8410 0.1F* 70 V CHIP REF SHDN ENABLE 4 604k 60 0.1F GND FBP 2 412k 50 *HIGHER VALUE CAPACITOR IS REQUIRED WHEN THE V IS HIGHER THAN 5V 8410-1 TA01a IN 0 40 0.01 0.1 1 10 0.01 0.1 1 10 100 LOAD CURRENT (mA) 8410-1 TA02 LOAD CURRENT (mA) 8410-1 TA03 84101fc 1 For more information www.linear.com/LT8410 V PEAK-TO-PEAK RIPPLE (mV) OUT EFFICIENCY (%)LT8410/LT8410-1 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V Voltage ................................................0.3V to 16V CC SHDN 1 8 FBP SW Voltage ................................................0.3V to 42V V 2 V 7 CC REF CAP Voltage ...............................................0.3V to 40V 9 GND 3 CAP 6 V Voltage ..............................................0.3V to 40V OUT SW V 4 5 OUT SHDN Voltage ............................................0.3V to 16V DC PACKAGE V Voltage ..............................................0.3V to 2.5V REF 8-LEAD (2mm 2mm) PLASTIC DFN T = 125C, = 88C/W FBP Voltage ..............................................0.3V to 2.5V JMAX JA EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB Maximum Junction Temperature .......................... 125C Operating Temperature Range (Note 2)..40C to 125C Storage Temperature Range ...................65C to 150C ORDER INFORMATION (