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Efficient and Tiny Power IC Products Extend Battery Life and Functionality >>
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All prices in this bulletin are in USD in quantities greater than 1000 (unless otherwise noted), recommended lowest grade resale, FOB U.S.A.
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Highly Efficient and Tiny Power IC Products Extend Battery Life and Functionality of Portable Handheld Devices
 he ADP2102, a low quiescent current step-down dc-to-dc converter, and the ADP1653, a white LED flash driver, are power management ICs optimized for use in portable handheld applications such as wireless handsets, digital still cameras, and more. These two devices dramatically extend battery life with efficiency ratings of up to 95% in conjunction with a power saving mode that reduces the switching frequency under light load conditions. In addition, they offer overvoltage/undervoltage lockout and soft-start that help reduce or eliminate the harmful effects of deep battery discharge or current overshoot during startup. The ADP1653 offers a unique Tx masking feature that dynamically reduces the current of the flash LED in less than 50 µs when the current of the amplifier bursts in RF transmission. The added performance and functionality of these devices is accomplished in some of the smallest packages available today. The ADP2102 is available in a compact 3 mm × 3 mm LFCSP or 1.375 mm × 1.675 mm WLCSP; the ADP1653 is offered in a 3 mm × 3 mm LFCSP.
ADP2102 DC-to-DC Converter Features:
• 95% efficiency
• Optimized for low output voltages
• Load current: up to 600 mA
• Input voltage: 2.7 V to 5.5 V
• Operates with a single Li-Ion battery
• Fixed and adjustable output voltage from
0.8 V to 1.875 V
• Internal synchronous rectifier
• Shutdown supply current: 0.1 µA/0.01 µA
• Enable/shutdown logic input
• Undervoltage lockout
• Internal soft start, internal compensation
ADP1653 LED Flash Driver Features:
• 92% efficiency
• 90 lumens of brightness
• I2C® or 2-bit logic interface
• Tx masking within 50 µs
• 2.2 µH power inductor
• 12 V NFET
• Flash current: 500 mA
• Over 80% efficiency with Li-Ion batteries
• Indicator LED current sink
• 45 mm2 total solution size
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