APW7093QAI-TR

APW7093 3A, 1MHz, Step Down DC/DC Regulator Features • • • • Source/Sink 3A Up to 1MHz Switches Frequency Up to 94% Efficiency Internal PMOS/NMOS Switches - 70mΩ/40mΩ On-Resistance at VIN = 4.5V - 90mΩ/60mΩ On-Resistance at VIN = 3V General Description The APW7093 is a reversible energy flow, constantoff-time, pulse-width modulated (PWM), step-down DC-DC converter. It is ideal for use in notebook and sub-notebook computers that require 1.1V to 5V active termination power supplies. This device features an internal PMOS power switch and internal synchronous rectifier for high efficiency and reduced component count. The internal 90mΩ PMOS power switch and 60mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 3A. The APW7093 accurately tracks an external reference voltage, produces an adjustable output from 1.1V to VIN, and achieves efficiencies as high as 94%. The APW 7093 uses a unique current-mode, constant-off-time, PWM control scheme that allows the output to source or sink current. This feature allows energy to return to the input power supply that otherwise would be wasted. The programmable constant-off-time architecture sets switching frequencies up to 1MHz, allowing the user to optimize performance trade-offs between efficiency, output switching noise, component size, and cost. The APW7093 features an adjustable soft-start to limit surge currents during startup, a 100% duty-cycle mode for low-dropout operation, and a low-power shutdown mode that disables the power switches and reduces supply current below 1µA. The APW7093 is available in a 32-pin QFN with an exposed backside pad or a 16-pin SSOP. • • • • • • • • • ± 1% Output Accuracy 1.1V to VIN Adjustable Output Voltage 3V to +5.5V Input Voltage Range 2KV, VMM > 200V 10ms , Itr > 1 00mA Carrier Tape & Reel Dimension t E Po P P1 D F W Bo Ao D1 Ko Copyright © A NPEC Electronics Corp. Rev. A.5 - Jun., 2005 19 www.anpec.com.tw APW7093 Carrier Tape & Reel Dimension T2 J C A B T1 Application A 6.95 B 5.4 T2 2.2 D0 D1 E 1.75±0.1 C1 13±0.3 F 5.5±0.05 C2 21±0.8 P0 4.0±0.1 T1 13.5±0.5 P1 8.0±0.1 T2 2.0±0.2 P2 2.0±0.05 C 80±1 1.55±0.05 1.55±0.1 W 12.0±0.3 W1 9.5 SSOP-16 T 0.3±0.05 (mm) Cover Tape Dimensions Application SSOP- 16 Carrier Width 16.8 Cover Tape Width 12.3 Devices Per Reel 2500 Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright © A NPEC Electronics Corp. Rev. A.5 - Jun., 2005 20 www.anpec.com.tw