MIC79050-4.2BS

Microchip
MIC79050 Micrel, Inc. MIC79050 Simple Lithium-Ion Battery Charger General Description Features The MIC79050 is a simple single-cell lithium-ion battery charger. It includes an on-chip pass transistor for high precision charging. Featuring ultrahigh precision (+0.75% over the Liion battery charging temperature range) and “zero” off mode current, the MIC79050 provides a very simple, cost eff...
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Технические характеристики

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Максимальное входное напряжение
Максимальный выходной ток
Примечание Battery Charge Controller, 1A, PSSO3
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MIC79050 Micrel, Inc. MIC79050 Simple Lithium-Ion Battery Charger General Description Features The MIC79050 is a simple single-cell lithium-ion battery charger. It includes an on-chip pass transistor for high precision charging. Featuring ultrahigh precision (+0.75% over the Liion battery charging temperature range) and “zero” off mode current, the MIC79050 provides a very simple, cost effective solution for charging lithium-ion battery. • High accuracy charge voltage: ±0.75% over -5°C to + 60°C (Li-ion charging temperature range) • “Zero” off-mode current • 10µA reverse leakage • Ultralow 380mV dropout at 500mA • Wide input voltage range • Logic controlled enable input (8-pin devices only) • Thermal shutdown and current limit protection • Power MSOP-8, Power SOIC-8, and SOT-223 • Pulse charging capability Other features of the MIC79050 include current limit and thermal shutdown protection. In the event the input voltage to the charger is disconnected, the MIC79050 also provides minimal reverse-current and reversed-battery protection. The MIC79050 is a fixed 4.2V device and comes in the thermally-enhanced MSO-8, SO-8, and SOT-223 packages. The 8-pin versions also come equipped with enable and feedback inputs. All versions are specified over the temperature range of –40°C to +125°C. Applications • • • • • Li-ion battery charger Celluar phones Palmtop computers PDAs Self charging battery packs Ordering Information Part Number Voltage Junction Temp. Range Package Standard Pb-Free MIC79050-4.2BS MIC79050-4.2YS 4.2V –40ºC to +125ºC SOT-223-3 MIC79050-4.2BM MIC79050-4.2YM 4.2V –40ºC to +125ºC SOIC-8 MIC79050-4.2BMM MIC79050-4.2YMM 4.2V –40ºC to +125ºC MSOP-8 Typical Applications Regulated or unregulated wall adapter MIC79050-4.2BS IN BAT GND 4.2V 0.75% Over Temp Li-Ion Cell Simplest Battery Charging Solution Regulated or unregulated wall adapter MIC79050-4.2BMM IN BAT EN FB GND 4.2V 0.75% Li-Ion Cell External PWM* *See Applications Information Pulse-Charging Application Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com August 2005 1 MIC79050 PDF
Документация на MIC79050-4.2BMM 

MIC79050.indd

Дата модификации: 11.08.2005

Размер: 280.3 Кб

14 стр.

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