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SMB208A Fiches technique(PDF) 1 Page - Summit Microelectronics, Inc. |
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SMB208A Fiches technique(HTML) 1 Page - Summit Microelectronics, Inc. |
1 / 27 page SMB206A/7A/8A Preliminary 1 (See Last Page) SUMMIT Microelectronics, Inc. 2012 • 757 N. Mary Ave • Sunnyvale CA 94085 • Phone 408 523-1000 • FAX 408 523-1266 http://www.summitmicro.com/ 2147 2.4 2/23/2012 1 Dual Programmable Buck Regulators with Integrated MOSFETs and Digital Control FEATURES • Dual Step-Down DC-DC Outputs - Integrated power MOSFET switches - 1A-3A output current with built in current limit - Input voltage range: +4.5V to +16V - Output voltage +0.8V to +5.0V (+/-2.5% accuracy) - Automatic PFM mode for light load efficiency - Integrated frequency compensation • Integrated Power Control and Programmability - I 2C Digital or Pin Control (Enable) - Static and Dynamic Programmable Output Voltage • 128 levels of output voltage settings • “Coarse” nominal setpoint 0.8V-1.8V and 2.3/2.5/3.0/3.3/5.0V • “Fine” Margining +1.14% to +7.95% (vs. coarse setting) - PWM frequency 500-1000kHz with 180 o interleave - Output enable and power up/down sequence - Programmable output softstart/stop - Output UV monitoring with PGOOD/RESET output APPLICATIONS • Digital LCD/Plasma TV • Digital Set-Top Box/PVR/DVR • Datacom/Telecom Equipment The SMB206A/7A/8A are highly integrated and flexible dual- output DC-DC regulators designed for use in a wide variety of applications. High integration reduces system cost and component count, while the built-in non-volatile digital programmability cuts development time by allowing system designers to custom tailor the device to suit almost any application. The SMB206A/7A/8A includes integrated high-side MOSFET switches for up to 1A-3A continuous output current. Programmable output voltages as low as +0.8V support the latest VLSI digital cores. Minimum external components result in a very compact solution size for space constrained applications. Sophisticated power control/monitoring functions required by many systems are built-in and accessible via digital I 2C interface. These include digitally programmable output voltage setpoint, power-up/down softstart and sequencing, independent enable/disable, output UV monitoring with PowerGood/Reset output. Additionally, fine resolution voltage margining is provided to allow for sophisticated system optimization. The integration of features and built-in flexibility of the SMB206A/7A/8A allow the system designer to create a “platform solution” that can be easily modified without hardware changes. The SMB206A/7A/8A are well suited to applications with an input range of +4.5V to +16V. The operating temperature range is -40 oC to +85oC and the available packages are 3mm X 3mm 20-pad QFN or 6.5mm X 6.4mm TSSOP-24. Memory CPU/SoC SMB206A/7A/8A Step-Down 1 int. FET System Control and Monitoring PGOOD/RESET Output Enable Inputs +4.5V to +16V DC IN Step-Down 0 int. FET 0.8V-VIN (Prog.) up to 1A-3A 0.8V-VIN (Prog.) up to 1A-3A I2C I/F SMB206A - 3A+3A SMB207A - 1A+1A SMB208A - 2A+2A Figure 1 - SIMPLIFIED APPLICATION FEATURES & APPLICATIONS INTRODUCTION |
Numéro de pièce similaire - SMB208A |
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Description similaire - SMB208A |
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