LT1510 - Constant-Voltage/Constant-Current Battery Charger

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

Typical Application

LT1510 Typical Application
LT1510 Typical Application

Description

With switching frequency as high as 500kHz, The LT1510 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 0.1 ohms onboard 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. The LT1510 can charge batteries ranging from 2V 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 (500kHz for LT1510-5) 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 adaptor is unplugged. Soft start and shutdown features are also provided. The LT1510 is available in a 16-pin fused lead power SO package with a thermal resistance of 50°C/W, an 8-pin SO and a 16-pin PDIP.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SO-8, SSOP-16, SO-16, N-16

LT1510 Package Drawing
LT1510 Package Drawing
LT1510 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1510-5CGN SSOP 16 C $5.00 $4.05 View
LT1510-5CGN#PBF SSOP 16 C $5.00 $4.05 View
LT1510-5CGN#TR SSOP 16 C $4.11 View
LT1510-5CGN#TRPBF SSOP 16 C $4.11 View
LT1510-5IGN SSOP 16 I $5.75 $4.70 View
LT1510-5IGN#PBF SSOP 16 I $5.75 $4.70 View
LT1510-5IGN#TR SSOP 16 I $4.76 View
LT1510-5IGN#TRPBF SSOP 16 I $4.76 View
LT1510CGN SSOP 16 C $5.00 $4.05 View
LT1510CGN#PBF SSOP 16 C $5.00 $4.05 View
LT1510CGN#TR SSOP 16 C $4.11 View
LT1510CGN#TRPBF SSOP 16 C $4.11 View
LT1510CN PDIP 16 C $4.60 $3.75 View
LT1510CN#PBF PDIP 16 C $4.60 $3.75 View
LT1510CS SO 16 C $4.85 $3.95 View
LT1510CS#PBF SO 16 C $4.85 $3.95 View
LT1510CS#TR SO 16 C $4.01 View
LT1510CS#TRPBF SO 16 C $4.01 View
LT1510CS8 SO 8 C $3.70 $3.00 View
LT1510CS8#PBF SO 8 C $3.70 $3.00 View
LT1510CS8#TR SO 8 C $3.06 View
LT1510CS8#TRPBF SO 8 C $3.06 View
LT1510IGN SSOP 16 I $5.75 $4.70 View
LT1510IGN#PBF SSOP 16 I $5.75 $4.70 View
LT1510IGN#TR SSOP 16 I $4.76 View
LT1510IGN#TRPBF SSOP 16 I $4.76 View
LT1510IN PDIP 16 I $5.30 $4.30 View
LT1510IN#PBF PDIP 16 I $5.30 $4.30 View
LT1510IS SO 16 I $5.55 $4.50 View
LT1510IS#PBF SO 16 I $5.55 $4.50 View
LT1510IS#TR SO 16 I $4.56 View
LT1510IS#TRPBF SO 8 I $4.56 View
LT1510IS8 SO 8 I $4.25 $3.45 View
LT1510IS8#PBF SO 8 I $4.25 $3.45 View
LT1510IS8#TR SO 8 I $3.51 View
LT1510IS8#TRPBF SO 8 I $3.51 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC086A LT1510CS | CONSTANT VOLTAGE/CONSTANT CURRENT BATTERY CHARGER $125.00
DC179A LT1510-5CGN | 800mA CONSTANT CURRENT, CONSTANT VOLTAGE, BATTERY CHARGER, 500KHz Contact Factory
DC294A-B LTC1729CMS8-4.2, LT1510-5CGN | Termination Controllers / Li-Ion Battery Charger, 8.2V to 20V Input, 4.2Vout @ 1A Max. (marking LTJH) Contact Factory
DC294A-D LTC1729CMS8-8.4, LT1510-5CGN | Termination Controllers / Li-Ion Battery Charger, 11.5V to 28V Input, 8.4Vout @ 1A Max. (marking LTJG) Contact Factory
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Click here to view our complete list of demo boards

Applications

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

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Design Tools

LTspiceIV

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Models for the following parts are available in LTspice IV:
LT1510
LT1510-5

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