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LT3650EMSE-4.2#PBF

High Voltage 2 Amp Monolithic Li-Ion Battery Charger

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LT3650EMSE-4.2#PBF General Description

The LT3650 is a complete monolithic single-cell Li-Ion/Polymer battery charger that operates over a 4.75V to 32V input voltage range (7.5V minimum start-up voltage). The LT3650 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A, set using an external current sense resistor. A precondition feature trickle charges a low voltage battery, and bad-battery detection provides a signal and suspends charging if a battery does not respond to preconditioning.

The LT3650 can be configured to terminate charging when charge current falls to C/10, or one-tenth the programmed maximum current. Once charging is terminated, the LT3650 enters a low current (85μA) standby mode. An auto-restart feature starts a new charging cycle if the battery voltage drops 2.5% from the fl oat voltage, or if a new battery is inserted into a charging system.

The LT3650 contains a user-programmable internal safety timer (typically set to a three hour full cycle time). The IC can be configured to use this internal timer if a time-based termination scheme is desired in which charging can continue below C/10 until a desired time is reached.

The LT3650 is available in a low profile (0.75mm) 3mm × 3mm 12-pin DFN and 12-pin MSOP packages.

Analog Devices, Inc Inventory

Key Features

  • Wide Input Voltage Range: 4.75V to 32V (40V Absolute Maximum)
  • Programmable Charge Current Up to 2A
  • User-Selectable Termination: C/10 or Onboard Termination Timer
  • Dynamic Charge Rate Programming/Soft-Start Pin
  • Programmable Input Current Limit
  • No VIN Blocking Diode Required
  • 1MHz Fixed Frequency
  • Average Current Mode Control
  • 0.5% Float Voltage Accuracy
  • 5% Charge Current Accuracy
  • 2.5% C/10 Detection Accuracy
  • NTC Resistor Temperature Monitor
  • Auto-Recharge at 97.5% Float Voltage
  • Auto-Precondition at <70% Float Voltage
  • Bad Battery Detection with Auto-Reset
  • Binary Coded Open-Collector Status Pins
  • 3mm × 3mm DFN-12 or MSOP-12 Package
Analog Devices, Inc Original Stock

Application

  • Industrial Handheld Instruments
  • 12V to 24V Automotive and Heavy Equipment
  • Desktop Cradle Chargers
  • Notebook Computers
Analog Devices, Inc Inventory

Specifications

model LT3650EMSE-4.2#PBF package 12-Lead MSOP w/ EP
packingQty Tube,37 packingOption Tube
packageType 05-08-1666 rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Battery Management
RoHS Details Product Charge Management
Battery Type Lithium-ion, Lithium Polymer Output Voltage 4.2 V
Output Current 2 A Operating Supply Voltage 4.75 V to 32 V
Package / Case MSOP-12 Mounting Style SMD/SMT
Series LT3650-4.1 Brand Analog Devices
Development Kit DC1229B-A, DC1229B-B Product Type Battery Management
Factory Pack Quantity 37 Subcategory PMIC - Power Management ICs
Unit Weight 0.003527 oz

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Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

warranty Warranty & Returns

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.

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LT3650EMSE-4.2#PBF Datasheet PDF

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