YB1300S

YB1300S Switched Capacitor Boost Converter 5V/4.5V Description The YB1300S is a switched capacitor DC/DC boost converter that produces a regulated 5V output. The input voltage range is from 2.7V to 5.0V that makes the YB1300S ideally for a single cell Li-Ion battery source. The YB1300S works well for step-up applications without the need for an inductor. The 1MHz switching frequency allows the use of small SMD capacitors. The YB1300S provides thermal protection, short-circuit current limit protection. In order to prevent in-rush current effectively, it provides automatic soft-start. The shutdown current is less than 0.1μA. The YB1300S is available in a 6-pin SOT23 package. Features „ „ „ „ „ „ „ „ „ Switched-Capacitor Step-Up Operation Input Range : 2.7V to 5.0V Shutdown Mode 5V/4.5V Fix Output Voltage 1MHz Internal Oscillator Thermal Protection Shutdown Output Short-circuit Current Limit Protection Automatic Soft-Start Reduces In-Rush Current SOT23-6 Package Applications „ „ „ „ „ Cellular Phones White LED Drivers Smart Card Reader PCMCIA Cards Li-Ion Battery Backup Supplies Typical Application Circuit 5 1-Cell Li-Ion-Battery CIN 2.2uF VIN YB1300S 1 VOUT CP 6 4 CPUMP 0.22uF R COUT 2.2uF R R R R 3 EN 2 GND CN Figure 1: Typical Application Circuit YB1300S Rev.1.2 www.yobon.com.tw 1 YB1300S Switched Capacitor Boost Converter 5V/4.5V Pin Configuration VOUT GND EN 1 2 3 SOT23-6 Figure 2: Pin Configuration 6 5 4 CP VIN CN Pin Description Table 1 Pin 1 2 3...