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1510 Datasheet - Linear Technology

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Part Name
1510

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16 Pages

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338.3 kB

MFG CO.
Linear
Linear Technology Linear

DESCRIPTION
With switching frequency as high as 500kHz, The LT®1510 current mode PWM battery charger is the smallest, simplest, most 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 1.5A DC current (2A peak current). The 0.1Ωonboard current sense resistor makes the charging current programming very simple. One resistor (or a programming current from
a DAC) is required to set the full charging current (1.5A) to within 5% accuracy. The LT1510 with 0.5% reference voltage accuracy meets the critical constant-voltage charging requirement for lithium cells.

FEATURES
■ Charges NiCd, NiMH and Lithium-Ion Batteries - Only One 1/10W Resistor Is Needed to Program Charging Current
■ High Efficiency Current Mode PWM with 1.5A Internal Switch and Sense Resistor
■ 3% Typical Charging Current Accuracy
■ Precision 0.5% Voltage Reference for Voltage Mode Charging or Overvoltage Protection
■ Current Sensing Can Be at Either Terminal of the Battery
■ Low Reverse Battery Drain Current: 3µA
■ Charging Current Soft Start
■ Shutdown Control
■ 500kHz Version Uses Small Inductor

APPLICATIONS
■ Chargers for NiCd, NiMH and Lithium Batteries
■ Step-Down Switching Regulator with Precision Adjustable Current Limit

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