AP2011 Datasheet | Anachip

Features - Single 10V to 40V Supply Application - 1.25V + 2.0% Voltage Reference - Virtual Frequency Control TM. - Fast Transient Response. - Synchronous Operation for High Efficiency - Current Limit Function. - Small Size with Minimum External ponents - Soft Start and Shutdown Functions - Industrial Temperature Range - Under Voltage Lockout Function - SOP-14L Pb-Free Package - General Description The AP2011 is a low-cost, full featured, synchronous voltage-mode controller designed for use in single ended power supply applications where efficiency is of primary concern. Synchronous operation allows for the elimination of heat sinks in many applications. The AP2011 is ideal for implementing DC/DC converters needed to power advanced microprocessors in low cost systems or in distributed power applications where efficiency is important. Internal level-shift, high-side drive circuitry, and preset shoot-thru control, allows the use of inexpensive 1P+1N-channel power switches. AP2011’s features include temperature ompensated voltage reference, Virtual Frequency Control TM method to reduce external ponent count, an internal virtual frequency 200KHz oscillator, under-voltage lockout protection, soft-start, shutdown function and current sense parator circuitry. Virtual Frequency Control is a trademark of PWRTEK, LLC. - Applications - Microprocessor Core Supply - Low Cost Synchronous Applications - Voltage Regulator Modules (VRM) - Networking Power Supplies - Sequenced Power Supplies - Telemunication Power Supplies. - Pin Assignments (Top View) PGATE VCC PVCC PDRV PGND NGATE VIN 1 2 3 5 6 7 14 13 12 10 - Pin Descriptions Pin Name VREF PHASE SGND OCSET FB SS/SHDN CAP 4 AP2011 11 9 PGATE VCC PVCC PDRV PGND NGATE VIN CAP SS/ SHDN FB OCSET Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Description Level shift-gate driver Internal regulator voltage Power VCC PMOS Gat driver Power Ground Low side driver output (N MOSFET) Chip supply voltage Charge pump pin Soft start, a capacitor...