LTC4059A Linear Technology, LTC4059A Datasheet
LTC4059A
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LTC4059A Summary of contents
Page 1
... A. With power applied, they can be put into shutdown mode, reducing the supply current The LTC4059A features an open-drain status pin to indi- cate the presence of an input voltage. The LTC4059 can be used as a constant-current source to charge Nickel cells. ...
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... V and BAT) CC Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC4059E/LTC4059AE are guaranteed to meet performance specifications from Specifications over the – PACKAGE/ORDER I FOR ATIO TOP VIEW ...
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... Current Mode) 1. 3.85V BAT 1.23 1. 12.1k PROG 1. 2.43k PROG 1.20 1.19 1.18 –50 – 100 125 TEMPERATURE ( C) 4059 G08 LTC4059/LTC4059A www.DataSheet4U.com Regulated Output (Float) Voltage vs Supply Voltage 4. 10mA BAT 4. 2.43k PROG 4.22 4.21 4.20 4.19 4.18 4.17 4. (V) CC Charge Current vs Ambient Temperature with Thermal ...
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... V (V) EN Manual Shutdown Supply Current vs Temperature –50 – TEMPERATURE ( C) ACPR Pin (Pull-Down State) I-V Curve (LTC4059A Only) 4 4.2V BAT 3 3.0 2.5 2.0 1.5 1.0 0 (V) ACPR www.DataSheet4U.com UVLO Battery Drain Current vs Battery Voltage 2 ...
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... Li CC thereby providing a constant current to the BAT pin. This feature is useful for charging Nickel chemistry batteries. Tie to GND if unused. ACPR (Pin 2, LTC4059A): Open-Drain Power Supply Status Output. When V is greater than the undervoltage CC lockout threshold, the ACPR pin will pull to ground; ...
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... – REF D3 – PROG Figure 1 (LTC4059 – – REF D3 – PROG 5 Figure 2 (LTC4059A) www.DataSheet4U.com M1 1000 D2 BAT – REF R2 GND 1,7 4059 F01 M1 1000 D2 BAT – REF R2 GND 1,7 4059 F02 4059fa ...
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... No blocking diode or external sense resistor is required; thus, the basic charger circuit requires only two external components. The ACPR pin (LTC4059A) monitors the status of the input voltage with an open-drain output. The Li CC pin (LTC4059) disables constant-voltage operation and turns the LTC4059 into a precision current source capable of charging Nickel chem- istry batteries ...
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... Constant Temperature The LTC4059/LTC4059A use a unique architecture to charge a battery in a constant-current, constant-voltage and constant-temperature fashion. Figures 1 and 2 show simplified block diagrams of the LTC4059 and LTC4059A respectively. Three of the amplifier feedback loops shown control the constant-current, CA, constant-voltage, VA, and constant-temperature, TA modes. A fourth amplifier ...
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... C/W. Failure to make thermal contact between the exposed pad on the backside of the package and the copper board will result in thermal resistances far greater than 60 C/ example, a correctly soldered LTC4059/ LTC4059A can deliver over 900mA to a battery from a 5V • supply at room temperature. Without a backside thermal JA connection, this number could drop to less than 500mA ...
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... LTC4059/LTC4059A U U APPLICATIO S I FOR ATIO program resistor. The pole frequency at the PROG pin should be kept above 500kHz. Therefore, if the PROG pin is loaded with a capacitance, C PROG tion should be used to calculate the maximum resistance value for R : PROG 1 R PROG 5 2 • • ...
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... U DC Package 6-Lead Plastic DFN (2mm 2mm) (Reference LTC DWG # 05-08-1703) 0.675 0.05 PACKAGE PIN 1 OUTLINE TOP MARK (SEE NOTE 5) 0.25 0.05 0.200 REF 0.50 BSC LTC4059/LTC4059A www.DataSheet4U.com R = 0.115 0.38 0.05 TYP 4 6 0.56 0.05 (2 SIDES) 2.00 0.10 (4 SIDES 0.50 BSC ...
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... LTC4059/LTC4059A U TYPICAL APPLICATIO RELATED PARTS PART NUMBER DESCRIPTION LTC1733 Monolithic Lithium-Ion Linear Battery Charger LTC1734 Lithium-Ion Linear Battery Charger in ThinSOT LTC1998 Lithium-Ion Low Battery Detector LTC4050 Lithium-Ion Linear Battery Charger Controller LTC4052 Monolithic Lithium-Ion Battery Pulse Charger LTC4053 USB Compatible Monolithic Li-Ion Battery Charger ...