lt3650-4.1 Linear Technology Corporation, lt3650-4.1 Datasheet
lt3650-4.1
Related parts for lt3650-4.1
lt3650-4.1 Summary of contents
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... LT3650-4.2 SHDN SENSE CHRG BAT FAULT NTC TIMER RNG/SS LT3650-4.1/LT3650-4.2 High Voltage 2 Amp Monolithic Li-Ion Battery Charger DESCRIPTION The LT ® 3650 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). ...
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... LT3650-4.1/LT3650-4.2 ABSOLUTE MAXIMUM RATINGS V ............................................................................40V IN SHDN, CHRG, FAULT ............................... V CLP ......................................................... V SW ............................................................................40V SW-V .....................................................................4.5V IN BOOST .....................................................SW + 10V, 50V SENSE, BAT ..............................................................10V PIN CONFIGURATION TOP VIEW CLP 2 3 SHDN 13 4 CHRG 5 FAULT TIMER 6 DD PACKAGE 12-LEAD (3mm 3mm) PLASTIC DFN = 125°C, θ = 43°C/W, θ ...
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... LT3650-4.1/LT3650-4.2 l The denotes the specifi cations which apply over the full operating = 20V, BOOST-SW = 4V, SHDN = 2V, SENSE = BAT = V IN CONDITIONS (Note 3) V Rising IN V Rising IN LT3650-4.1 LT3650-4.2 Threshold Voltage Relative to V BAT(FLT) V Rising BAT CC/CV Mode Standby Mode Shutdown (SHDN = 0) Switch-On 2.5V < ...
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... LT3650-4.1/LT3650-4.2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at V SYMBOL PARAMETER Status Low Voltage CHRG FAULT I Charge/Discharge Current TIMER V Timer Disable Threshold TIMER(DIS) t Full Charge Cycle Timeout TIMER Precondition Timeout Timer Accuracy f Operating Frequency O DC Duty Cycle Range Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device ...
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... TEMPERATURE (°C) MAX – BAT 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 –0.2 –0 105 115 125 135 365042 G10 LT3650-4.1/LT3650-4 25°C, unless otherwise noted CC/CV Charging; SENSE Pin Bias SW Current vs V SENSE 100 LT3650-4 –50 –100 –150 –200 –250 –300 –350 125 0 0.5 1 1.5 2.5 100 ...
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... LT3650-4.1/LT3650-4.2 PIN FUNCTIONS V (Pin 1): Charger Input Supply 4.75V to 32V. V ≥ 7. – BOOST for start-up 85μA after charge termination. VIN CLP (Pin 2): System Current Limit Input. System current levels can be monitored by connecting the input power supply to the CLP pin and connecting a sense resistor from the CLP pin to the V pin ...
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... Applica- tion Information section). The charge function operates to achieve the fi nal fl oat voltage at this pin. The auto-restart feature initiates a new charging cycle when the voltage at LT3650-4.1/LT3650-4.2 ). the BAT pin falls 2.5% below this fl oat voltage. Once the SS charge cycle is terminated, the input bias current of the BAT pin is reduced to < ...
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... – + 0.1V 1V 0.15V V INT x2.25 2.7V STANDBY 1.36V – 50μA + 0.29V * V : 4.2V FOR LT3650-4.2, 4.1V FOR LT3650-4.1 BAT(FLT – ΔV : 4.1V FOR LT3650-4.2, 4.0 FOR LT3650-4.1 BAT(FLT) RECHRG 46μA CLP – + 4.6V BOOST 50mV + V – IN 35V + 10mΩ – 30mV SENSE R S BAT OFFSET – ...
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... C/10 level to top-off a battery. The charge cycle terminates when a specifi c time elapses, typically three hours. When the LT3650-4.1/LT3650-4.2 timer-based scheme is used, the IC also supports bad- battery detection, which triggers a system fault if a battery stays in precondition mode for more than one-eighth of the total programmed charge cycle time ...
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... LT3650-4.1/LT3650-4.2 OPERATION The I error voltage corresponds linearly to average TH current sensed across the inductor current sense resistor, allowing maximum charge current control by limiting the effective voltage range clamp limits this voltage which, in turn, limits the current sense voltage to 100mV. This sets the maximum charge current, or the ...
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... This additional bypass capacitance may also be required in systems where the battery is connected to the charger through long wires. The voltage rating exceed the battery fl oat voltage. LT3650-4.1/LT3650-4.2 range of 4.75V to 32V, IN – – ...
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... LT3650-4.1/LT3650-4.2 APPLICATIONS INFORMATION R : Charge Current Programming SENSE The LT3650 charger is confi gurable to charge at average currents as high as 2A. Maximum charge current is set by choosing an inductor sense resistor such that the desired maximum average current through that sense resistor creates a 100mV drop, or ...
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... A current limiting is performed in most cases without the need for external fi lter elements. PowerPath is a trademark of Linear Technology Corporation LT3650 365042 F04 LT3650-4.1/LT3650-4.2 TM control feature to ) such that the desired maximum current CLP MAX the maximum input current. A 1.5A system ...
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... LT3650-4.1/LT3650-4.2 APPLICATIONS INFORMATION RNG/SS: Dynamic Charge Current Adjust The LT3650 gives the user the capability to adjust maximum charge current dynamically through the RNG/SS pin. The voltage on the RNG/SS pin corresponds to ten times the maximum voltage across the sense resistor (R default maximum sense voltage is 100mV, so maximum ...
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... When C/10 termination is used, an LT3650 charger sources battery charge current as long as the average current level remains above the C/10 threshold. As the full-charge fl oat LT3650-4.1/LT3650-4.2 voltage is achieved, the charge current falls until the C/10 threshold is reached, at which time the charger terminates and the LT3650 enters standby mode. The CHRG status pin follows the charger cycle and is high impedance when the charger is not actively charging ...
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... LT3650-4.1/LT3650-4.2 APPLICATIONS INFORMATION Preconditioning and Bad-Battery Fault An LT3650 charger has a precondition mode, in which charge current is limited to 15% of the programmed I as set The precondition current corresponds SENSE to 15mV across R . SENSE Precondition mode is engaged while the voltage on the BAT pin is below the precondition threshold (V the BAT voltage rises above the precondition threshold, normal full-current charging can commence ...
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... PCB. This footprint should be made as large as possible to reduce the thermal resistance of the IC case to ambient air BAT LT3650 SENSE BAT LT3650-4.1/LT3650-4.2 ). BAT V BAT SENSE + 365042 F09 ). In F 36504142fb 17 ...
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... LT3650-4.1/LT3650-4.2 TYPICAL APPLICATIONS 5V to 32V 1.5A Charger with Three Hour EOC Termination. The LTC1515 Provides Boost Start-Up Requirement. Status Pins Use LED Indicators. 2N3904 10k BZX84C6V2L (6.2V) INPUT SUPPLY 5V TO 32V 12V to 32V 2A Charger with Three Hour EOC Termination and Removable Battery Pack. The RNG/SS Pin Is Used to Reduce the Maximum Charger Current if 12V < ...
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... DETAIL “A” 1.10 (.043) MAX SEATING PLANE 0.22 – 0.38 (.009 – .015) 0.650 TYP (.0256) BSC LT3650-4.1/LT3650-4 0.115 0.40 0.10 TYP 7 12 2.38 0.10 1.65 0.10 PIN 1 NOTCH R = 0.20 OR 0.25 45 CHAMFER 6 1 0.23 0.05 0.45 BSC 2.25 REF (DD12) DFN 0106 REV A 0.00 – ...
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... LT3650-4.1/LT3650-4.2 TYPICAL APPLICATION 10V to 32V 1.5A Charger with C/10 Termination and 1A Input Supply Limit. SYSTEM LOAD INPUT SUPPLY 10V TO 32V AT 1A 10μF 330k 47k RELATED PARTS PART NUMBER DESCRIPTION LT1511 3A Constant-Current/Constant-Voltage Battery Charger LT1513 SEPIC Constant or Programmable Current/ Constant-Voltage Battery Charger LT1571 1 ...