STOD1317BTPUR STMicroelectronics

STOD1317B 170 mA 13 V, high efficiency boost converter + LDO Datasheet - production data Description The STOD1317B is a fixed frequency, high efficiency, boost DC-DC converter with cascaded LDO able to provide output voltages ranging from 6 V to 13 V starting with an input voltage from 2.6 V to 4.8 V. The device is designed to supply loads that are very sensitive to output ripple such as AMOLED display panels. A dedicated LDO is able to suppress any ripple and noise coming out DFN12L (3 x 3 mm) from the DC-DC converter. The LDO works with a constant drop in order to maintain high efficiency in the whole operating range. The low R N- DSon channel and P-channel MOSFET switches are integrated and contribute to achieving high efficiency. The true-shutdown feature allows Features physical disconnection of the battery from the Operating input voltage range from 2.6 V to load when the device is in shutdown mode. The 4.8 V control technique is able to maintain efficiency higher than 85% at light loads and higher than 1% output voltage tolerance 80% at full load. The device includes soft-start Low output ripple control, inrush current limiter, thermal shutdown True-shutdown and inductor peak current limit. The STOD1317B is packaged in DFN12L (3 x 3 x 0.8 mm) height. Short-circuit protection Digital low power function Very high efficiency at light load thanks to pulse skipping operation Very fast line and load transients 1.2 MHz switching frequency 1 A max. quiescent current DFN12L (3 x 3 x 0.8 mm) Applications Single rail AMOLED display Cellular phones Battery powered equipment Table 1. Device summary Order code Marking Package Packaging STOD1317BTPUR 1317B DFN12L (3 x 3 mm) 3000 parts per reel April 2013 DocID022607 Rev 2 1/22 This is information on a product in full production. www.st.com 22Contents STOD1317B Contents 1 Schematic . 3 2 Pin configuration 5 3 Maximum ratings 6 4 Electrical characteristics . 7 5 Typical performance characteristics 9 6 Detailed description 11 6.1 BOOST multiple mode of operation 11 6.1.1 Pulse skipping operation 11 6.1.2 Discontinuous conduction mode 11 6.1.3 Continuous conduction mode 12 6.2 Enable pin 12 6.3 Soft-start and inrush current limiting . 12 6.4 Undervoltage lockout 12 6.5 Overtemperature protection . 12 6.6 Digital low power function . 12 7 Application information . 14 7.1 External passive components . 14 7.1.1 Inductor selection 14 7.1.2 Input and output capacitor selection . 14 7.2 Recommended PCB layout . 14 8 Package mechanical data 17 9 Revision history . 21 2/22 DocID022607 Rev 2