DATASHEET ISL78113A FN8638 Rev 0.00 Low Input Voltage and High Efficiency Synchronous Boost Converter with 1.3A May 1, 2014 Switch The ISL78113A provides a tiny and convenient boost power Features supply solution to generate a regulated output up to 500mA Output disconnect during shutdown preventing output from any sub-5V secondary rail found in an automotive precharging and uncontrolled short-circuit current electrical system, including battery powered applications (NiCd, NiMH, or one-cell Li-Ion/Li-Polymer). It offers an Input voltage range: 0.8V to 4.7V adjustable output (3.0V to 5.2V) supporting USB-OTG or HDMI Output current: Up to 500mA (V = 3V, V = 5V) BAT OUT applications. The device is able to supply 500mA from a 3V Logic control shutdown (I < 1A) input and 5V output, and has a typical 1.3A peak current limit. Q 2MHz switching frequency The ISL78113A is a fully integrated, internally compensated, synchronous converter optimized to maximize efficiency and Up to 95% efficiency at typical operating conditions reduce the overall solution size and bill of materials. Its high Fault protection: OVP, OCP, OTP, UVLO 2MHz switching frequency allows the use of tiny, low-profile 2mmx2mm 8 Ld DFN package inductors and chip capacitors. It also eliminates potential interference within the AM radio band and the external EMI Qualified for automotive operations filtering needed for converters switching at lower rates. To minimize power consumption while off, the device features an Applications ultra-low current shutdown mode dropping quiescent current Automotive head units and infotainment systems: especially to 50nA typical. those including portable HDMI and USB-OTG connectivity ISL78113A is supplied in an 8 Ld DFN package. The device is Automotive camera systems rated to operate over the temperature range of -40C to +105C. 100 V = 3.6V BAT 6.8 H 90 80 8 70 V = OUT V = 4.2V BAT V = 3.4V BAT 5.0V/500mA V = V = 3V BAT BAT SW 2 60 0.8V TO 4.7V V OUT 7 50 V V = 2.3V 10F BAT BAT 40 422 10F 5 4 EN 30 FB 20 80.6 10 1 GND 0 0 0.1 0.2 0.3 0.4 0.5 0.6 LOAD CURRENT I (A) ISL78113AARAZ LOAD FIGURE 1. TYPICAL APPLICATION FIGURE 2. EFFICIENCY vs LOAD CURRENT FN8638 Rev 0.00 Page 1 of 12 May 1, 2014 EFFICIENCY (%)ISL78113A Block Diagram C1 V V OUT BAT C2 7 2 V INT VOLTAGE UVLO SELECTOR START-UP N-WELL SWITCH SW GATE L1 DRIVER 8 V OUT OVP AND ANTI-CROSS CONDUCTION SW ZCD EN V OUT 5 OFF ON CURRENT CONTROL LOGIC SENSE R1 DIGITAL AND SOFT-START CURRENT SLOPE COMP LIMIT FB 4 FAULT MONITORING g m VOLTAGE R2 CLAMP REFERENCE 2MHz THERMAL OSCILLATOR SHUTDOWN GENERATOR 1 6 FN8638 Rev 0.00 Page 2 of 12 May 1, 2014 V INT