LP3211

Preliminary Datasheet LP3211 High Performance PWM DC/DC Regulated General Description The LP3211 is a 1.2MHz high performance PWM DC/DC converter that produces a regulated 5V output. No external inductor and diode is required for operation. The operating voltage range is 2.8V to Vout. Internal soft-start circuitry effectively reduces the in-rush current both while start-up and mode change. The LP3211 features very low quiescent current, over current protection and short circuit protection. The LP3211 is available in SOT-23-6 package. Order Information LP3211 - □ □ □ F: Pb-Free Package Type B6: SOT23-6 Applications — LCD Panel — Cellular and Smart mobile phone — PDA/DSC — USB Host power Features — 280mA Output current — No Inductor and diode — Soft Start Function — Built-In Short-Circuit Protection — Built-in Thermal Protection — Over Current Protection Function — IQ<1uA in Shutdown — SOT23-6 Package — RoHS Compliant and 100% Lead (Pb)-Free Typical Application Circuit Vin LP3211 Vin VOUT Vout_5V CRY1 CRY2 CE Chip Enable ON OFF EN GND Marking Information Please see website. LP3211- – 00 Ver. 1.0 Datasheet FEB.-2009 Page 1 of 6 Preliminary Datasheet Functional Pin Description Package Type Pin Configurations LP3211 SOT23-6 EN 1 CRY1 2 GND 3 LP3211 6 CRY2 5 VIN 4 Vout PIN NAME 1 EN Chip Enable (Active High) 2 CRY1 CRYSTAL INPUT1. 3 GND Ground 4 VOUT 5V Output Voltage 5 VIN Power Input Voltage 6 CRY2 CRYSTAL INPUT2. Absolute Maximum Ratings — Inpu...