RT8058A Datasheet | Richtek

1.2MHz, 2A, High Efficiency PWM Step-Down DC/DC Converter General Description The RT8058A is a current mode PWM step-down converter. The chip is ideal for fixed frequency and low ripple applications over full range of load conditions. Its input voltage range is from 2.6V to 5.5V with a constant 1.2MHz switching frequency that allows it to adopt tiny, low cost capacitors and inductors with 2mm or less in height making it ideal for single-cell Li-lon/polymer battery applications. The low on resistance internal MOSFET can achieve high efficiency without the need of external schottky diodes in wide operating ranges and the output voltage is adjustable from 0.6V to 5V that can provide up to 2A load current. The RT8058A operates at 100% duty cycle for low dropout operation that extends battery life in portable devices. The RT8058A is available in a WDFN-10L 3x3 package. Features z z z z z z z z z z z z z z 0.6V Reference Allows Low Output Voltage Low Dropout Operation : 100% Duty Cycle 2A Load Current <2μA Shutdown Current Up to 95% Efficiency No Schottky Diode Required 1.2MHz Constant Switching Frequency Low RDS(ON) Internal Switches Internally pensated Internal Soft-Start Over temperature Protection Short Circuit Protection Small 10-Lead WDFN Package Ro HS pliant and Halogen Free Ordering Information RT8058A Package Type QW : WDFN-10L 3x3 (W-Type) Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` Applications z z z z z z Portable Instruments Microprocessors and DSP Core supplies Cellular Telephones Wireless and DSL Modems Digital Cameras PC Cards Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in Sn Pb or Pb-free soldering processes. Pin Configurations (TOP VIEW) PGND PGND FB GND POK 1 2 3 4 5 10 9 8 7 9 ` GND 11 Marking Information E9= : Product Code LX LX PVDD VDD EN E9=YM DNN YMDNN : Data Code WDFN-10L 3x3 DS8058A-02 April...