A8698

www.DataSheet4U.com A8698 Wide Input Voltage 3.0 A Step Down Regulator Features and Benefits ▪ ▪ ▪ ▪ ▪ 8 to 25 V input range Integrated DMOS switch Adjustable fixed off-time Highly efficient Adjustable 0.8 to 20 V output Description The A8698 is a constant off-time current mode step-down regulator with a wide input voltage range. Regulation voltage is set by external resistors, to output voltages as low as 0.8 V. The A8698 includes an integrated power DMOS switch to reduce the total solution footprint. It also features internal compensation, allowing users to design stable regulators with minimal design efforts. The off-time can be set with an external resistor, allowing flexibility in inductor selection. Additionally, the A8698 has a logic level enable pin which can shut the device down and put it into a low quiescent current mode for power sensitive applications. Package: 8-Lead SOIC with exposed thermal pad (suffix LJ) The A8698 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ). Applications include: ▪ ▪ ▪ ▪ Applications with 8 to 25 V input Consumer electronics, networking equipment 12 V lighter-powered applications (portable DVD, etc.) Point of Sale (POS) applications Approximate Scale 1:1 Typical Application +8 to 24 V CBOOT 0.01 μF CIN3 82 μF 35 V BOOT VIN CIN2 82 μF 35 V CIN1 0.22 μF Efficiency VIN = 12.0 V 92 90 88 86 VOUT = 5.0 V VOUT = 3.3 V Efficiency (%) ENB A8698 TSET RTSET 30.1 k7 GND LX 84 82 80 78 76 L1 33 μH VOUT 3.3 V / 3...