Battery Power Applications Design Guide
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Design ideas in this guide are based on many of Microchips Power Management products. A complete device list and corresponding data sheets for these products can be found at www.microchip.com. >

MCP1603 Synchronous Buck Regulator Features: > The MCP1603 is a highly efficient, fully integrated 500 mA synchronous buck regulator whose 2.7V to 5.5V input voltage range makes it ideally suited for applications powered from 1-cell Li-Ion or 2-cell/3-cell NiMH/NiCd batteries. At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution. When the load is reduced to light levels, the MCP1603 automatically changes operation to a PFM mode to minimize quiescent current draw from the battery. No intervention is...

MCP73832 Battery Charger Features: > Linear charge management control. Far too often, the battery charging system is given low priority, especially in cost sensitive applications. However, the quality of the charging system plays a key role in the life and reliability of the battery.Microchip offers a complete line of linear Li-Ion battery chargers. The Li-Ion Charge Management Controllers provide a reliable, low-cost and high accuracy voltage regulation solution with few external components. In an effort to further reduce the size, cost and complexity. The MCP7383X family provides fully...

MCP1630 PWM Features: Intelligent, switch-mode charge management control. The MCP1630 is a high-speed, microcontroller-adaptable, Pulse-Width Modulator (PWM) used to develop intelligent power control systems. Combined with a microcontroller, the MCP1630 regulates output voltage or current by controlling the power-system duty cycle. In the power control system, the microcontroller can be used to digitally adjust the output voltage or current by controlling the voltage reference applied to the MCP1630; thereby bringing digital control to the analog PWM function.The fast comparator of the...

DeviceInput Voltage Range (V)Output Voltage (V)Max. Input Current Typical Active Output Current (mA)FeaturesPackages ( յ A) MCP1252-33X50 2.7-5.5Selectable 3.3-5.0V120120 mA for V > IN >3.0VPower-Good output, 650 kHz oscillator8-pin MSOP MCP1252-ADJ 2.0-5.5Adjustable 1.5V-5.5V120120 mA for V > IN >3.0VPower-Good output, 650 kHz oscillator8-pin MSOP MCP1253-33X50 2.7-5.5Selectable 3.3-5.0V120120 mA for V > IN >3.0VPower-Good output, 1 MHz oscillator8-pin MSOP MCP1253-ADJ 2.0-5.5Adjustable 1.5V-5.5V120120 mA for V > IN >3.0VPower-Good output, 1 MHz oscillator8-pin MSOP MCP1256...

MCP1256 Output3.3VC - > IN OUT C > IN 10 F Typical Application with Power-Good Indication Typical Application with Low-Battery Indication 10 R > 1 C > OUT 10 յ F >

AN1088: Selecting the Right Battery System for Cost-Sensitive Portable Applications While Maintaining Excellent Quality Portable electronic devices have played an important role in a persons daily digital life and have changed the way people live and work. Commonly seen portable electronic devices are: cellular phones, media players, digital cameras, digital camcorders, handheld GPS, digital readers and PDAs. With the emerging technologies that are available today, portable electronic designers are trying to integrate more features into thinner and smaller form-factors while maximizing the...

MCP1630RD-DDBK3: MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design As high power portable applications continue to gain in popularity, more innovative techniques are needed to charge the batteries while also providing a low regulated voltage to the systems high end digital electronics. For example, laptop computers, portable test equipment, portable printers, etc., all require more power than a single or two cell Li-Ion battery pack can efficiently store. As a result, three or four series Li-Ion cell packs are used to store the necessary that power these high end applications....

MCP1650DM-LED1: MCP165X 3W White LED Demo Board The MCP165X 3W White LED Demo Board demonstrates Microchips MCP165X Boost Controller product family in a battery powered white LED application. The MCP1651 (8-pin MSOP) with low battery detect is featured in a SEPIC converter topology with an input voltage range of 2.0V to 4.5V. MCP7382XEV: MCP7382X Li-Ion Battery Charger Evaluation Board The MCP7382X Li-Ion Battery Charger Evaluation Board features three circuits utilizing the MCP73826, MCP73827 and MCP73828 devices to demonstrate simple, stand-alone, linear charging of single cell...

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