LT1769IFE#PBF Switching Battery Chargers by Analog Devices

Switching Battery Chargers
Status: Production
Series: LT1769
RoHS: Compliant
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The LT1769 current mode PWM battery charger is a simple, efficient solution to fast charge modern rechargeable batteries including lithium-ion (Li-Ion), nickel-metal-hydride (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 of current is not required and the battery’s negative terminal can be tied directly to ground. A saturating switch running at 200kHz gives high charging efficiency and small inductor size. A blocking diode is not required between the chip and the battery because the chip goes into sleep mode and drains only 3µA when the wall adapter is unplugged.

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Prices starting from US$12.35

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Features

Simple Solution to Charge NiCd, NiMH and Lithium Rechargeable Batteries—Charging Current Programmed by Resistors or DAC
Adapter Current Limit Allows Maximum Possible Charging Current During System Use*
Precision 0.5% Accuracy for Voltage Mode Charging
High Efficiency Current Mode PWM with 3A Internal Switch
5% Charge Current Accuracy
Adjustable Undervoltage Lockout
Automatic Shutdown When AC Adapter is Removed
Low Reverse Battery Drain Current: 3µA
Current Sensing Can Be at Either Terminal of the Battery
Charging Current Soft Start
Shutdown Control
Available in 20-Lead Exposed Pad TSSOP and 28-Lead Narrow SSOP Packages

Last 6 months Inventory & Pricing History

Alternative Descriptions

Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 2000mA 1V to 20V 20-Pin TSSOP EP Tube | Richardson RFPD

LT1769IFE#PBF Semiconductors - ICs by Linear Technology

BATT CHARGER 2A CC/CV 20TSSOP

Electronic & Electrical Components>Semiconductors - ICs>Battery Management
Status: Unknown
Series: -
RoHS: Unknown
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Specifications

Battery Type Li-Ion NiCd NiMH
Input Voltage 7V
Battery Charge Voltage 20V
Charge Current Max 2A
Battery IC Case Style TSSOP
No. of Pins 20Pins
No. of Series Cells 10
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Operating Temperature Range -40°C to +85°C

Last 6 months Inventory & Pricing History

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT1769IFE#PBF?

Additional datasheets, footprints and schematics for LT1769IFE#PBF are listed on our Part Details page. You can also find images and similar parts to LT1769IFE#PBF on this page.

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What category does LT1769IFE#PBF fall under?

The LT1769IFE#PBF is listed under Switching Battery Chargers.

Can I view similar or alternative parts?

You can view similar parts to LT1769IFE#PBF when available in the Switching Battery Chargers range under the specifications section at the bottom of the details page.

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Is the LT1769IFE#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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