Rev 1.6 DIO5180 2MHz, 1.5A Flash LED Driver Features Descriptions Dual Flash LED Outputs DIO5180 is a Boost-architecture high power flash Drive Up to Total 1.5A or 0.75A per Channel LED driver, ideally for smart phone camera Up to 90% Efficiency modules or digital still camera modules. The Integrated 2MHz Step-Up Converter internal DC/DC switch works at 2MHz and needs 3V to 5V Operation Voltage Range few peripheral components, fitting for portable Very Small Inductor: 1.0H photo flash solution. Independent Flash Mode Enable and DIO5180 has independent Flash mode and Movie/Torch Mode Enable Pins Movie/Torch mode enable pins. Flash mode is Flash Mode or Movie/Torch Mode Dimming via usually used with 600ms timer control to generate PWM Control a high intensity flash. The Flash mode and One Resistor Sets Flash Mode LED Current Movie/Torch mode LED current is programmed by One Resistor Sets Movie/Torch Mode LED external resistors respectively, making the flash Current LED solution simple to control. If both enable pins Integrated Thermal Regulation Control are at logic high, the LED current will be programmed by the Movie/Torch mode setting 10kHz to 200kHz PWM Dimming Frequency 600ms Flash Timer Control resistor. 330k Pull-Down Resistor on ENM and ENF The two LED output sinks can be shorted together Pins externally for higher power single flash LEDs, up LED Open or Short Protection to 1.5A continuous LED current. Thermal regulation is integrated in Flash mode to limit the Output Over-Voltage Protection Cycle-by-Cycle Inductor Current Limit ICs temperature and continuously provide the 0.1A Shutdown Current maximum allowed output current. Available in Green DFN-32-14L Package DIO5180 has many protection features, including -40C to +85C Operating Temperature Range cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or Typical Applications short) protection and thermal shutdown protection. The leakage current in shutdown is 0.1A. DIO5180 is available in Green DFN-32-14L package. It operates over an ambient temperature range of -40C to +85C. Applications Single Cell Li-Battery Powered Products Portable Audio Players Cellular Phones Note: 1: The decoupling capacitor C and C at the input and output IN OUT Personal Medical Products should be placed as close as possible to VIN pin and VOUT pin. 2: The power supply is recommended to be routed to VIN pin first with capacitor closely placed, then routed to inductors and then to SW pin. www.dioo.com 2016 DIOO MICROCIRCUITS CO., LTD DIO5180 V1.6 2MHz, 1.5A Flash LED Driver DIO5180 Ordering Information Order Part Top Marking T Package A Number DIO5180CD14 D5180 Green -40 to +85C DFN-32-14L Tape & Reel, 3000 Pin Assignments Figure 1 Pin Assignment (Top View) Pin Definitions PIN Pin Name Description Movie and Torch Mode Current Setting Pin 1 RSETM 2 RSETF Flash Mode Current Setting Pin Analog Ground Pin 3,13 AGND 4 VIN Input Supply Pin for the IC 5,6 SW Switching Node of the Step-Up Converter 7 PGND Power Ground Pin. 8,9 VOUT Output Voltage Pin. 10 ENF Flash Mode Enable Pin. This pin has an internal 330k pull-down resistor to AGND. 11 ENM Movie/Torch Mode Enable Pin. This pin has an internal 330k pull-down resistor to AGND. 12 D1 Regulated Output Sink Current. Up to 0.75A current. D1 and D2 pins can be connected together to sink 1.5A combined. Can not be floating in any case. 14 D2 Exposed Connected to ground for electrical and thermal usage. Exposed pad is Pad internally connected AGND pad to analog ground pin. www.dioo.com 2016 DIOO MICROCIRCUITS CO., LTD DIO5180 V1.6