Datasheet LT1769CGN - Linear Technology IC, BATT CHARGER, SMD, SSOP28, 1769 — Datenblatt

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Manufacturer: Linear Technology

Description: IC, BATT CHARGER, SMD, SSOP28, 1769

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FEATURES
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LT1769 Constant-Current/ Constant-Voltage 2A Battery Charger with Input Current Limiting DESCRIPTIO
The LT®1769 current mode PWM battery charger is a simple, efficient solution to fast charge modern rechargeable batteries including lithium-ion (Li-Ion), nickel-metalhydride (NiMH) and nickel-cadmium (NiCd) that require constant-current and/or constant-voltage charging.

The internal switch is capable of delivering 2A** DC current (3A peak current). Charge current can be programmed by resistors or a DAC to within 5%. With 0.5% reference voltage accuracy, the LT1769 meets the critical constant-voltage charging requirement for Li-Ion cells. A third control loop is provided to regulate the current drawn from the input AC adapter. This allows simultaneous operation of the equipment and battery charging without overloading the adapter. Charge current is reduced to keep the adapter current below specified levels. The LT1769 can charge batteries ranging from 1V to 20V. Ground sensing

Specifications:

• Base Number: 1769
• Battery Charge Voltage: 20 V
• Battery IC Case Style: SSOP
• Battery Type: Li-Ion, NiCd, NiMH
• Charge Current Max: 2 A
• Device Type: Power
• Input Voltage: 28 V
• Mounting Type: SMD
• Number of Outputs: 1
• Number of Pins: 28
• Operating Temperature Range: 0°C to +125°C
• Output Current Max: 3 A
• Output Source Current Max: 1.1 mA
• Output Voltage Max: 25 V
• Package / Case: SSOP
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage Range: 8 V to 30 V

RoHS: Yes

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• Electrolube - HTS35SL
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• Roth Elektronik - RE931-05
• STANNOL - 631954