LTC4101EG#PBF Linear Technology, LTC4101EG#PBF Datasheet
LTC4101EG#PBF
Specifications of LTC4101EG#PBF
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LTC4101EG#PBF Summary of contents
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... Portable Instruments and Computers n Data Storage Systems and Battery Backup Servers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6650174, 5723970. ...
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... Junction Temperature Range ................ –40°C to 125°C Storage Temperature Range ...................–65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC4101EG#PBF LTC4101EG#TRPBF LEAD BASED FINISH TAPE AND REEL LTC4101EG LTC4101EG#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Current Sense Amplifi er, CA1 Input Bias Current into BAT Pin CMSL CA1/I Input Common Mode Low 1 CMSH CA1/I Input Common Mode High 1 Current Comparators I ...
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LTC4101 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V at Shutdown BGATE AC Present Comparator V DCDIV Threshold ACP DCDIV Hysteresis DCDIV Input Bias Current ACP V OH ACP V OL DCDIV to ACP Delay ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Logic Levels V SCL/SDA Input Low Voltage IL V SCL/SDA Input High Voltage IH V SDA Output Low Voltage OL I SCL/SDA Input Current IL I SCL/SDA Input ...
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LTC4101 TYPICAL PERFORMANCE CHARACTERISTICS INFET Response Time to Reverse Current V OF PFET (2V/DIV PFET (5V/DIV (REVERSE PFET (5A/DIV 1.25μs/DIV TEST ...
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TYPICAL PERFORMANCE CHARACTERISTICS Charging Current Error 200 100 0 –100 –200 CHARGING CURRENT (A) PIN FUNCTIONS TGATE (Pin 1): Drives the Top External P-MOSFET of the Battery Charger Buck Converter. PGND (Pin 2): ...
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LTC4101 PIN FUNCTIONS I (Pin 13): An external resistor is connected between this LIM pin and GND. The value of the external resistor programs the range and resolution of the programmed charger current. This is a digital, not an analog, ...
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BLOCK DIAGRAM C4 R4 0.03μF 100Ω V SET V BAT 18 C5, 0.1μF GND 12 SYSTEM LOAD 20μF CLP L1 TGATE 1 CSP Q2 D1 BGATE PGND 2 CLN CLP 24 DCIN 5 ...
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LTC4101 TEST CIRCUIT + 1.19V – EA – DAC CSP BAT V SET BAT + LT1055 – 4101 TC01 OPERATION Overview (Refer to Block Diagram) The LTC4101 is composed of a battery charger section, a ...
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OPERATION to set the bottom MOSFET on time. The result is quasi- constant frequency operation: the converter frequency remains nearly constant over a wide range of output voltages. This activity is diagrammed in Figure 3. OFF TGATE ...
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LTC4101 OPERATION Input, Output or Input/Output: A description of the data supplied to or returned by the function. ChargerSpecInfo() ('h11) Description: The SMBus Host uses this command to read the LTC4101’s extended status bits. Purpose: Allows the System Host to ...
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OPERATION Table 1: Summary of Supported Charger Functions SMBus Function Access Address ChargerSpecInfo() 7'b0001_001 Read ChargerMode() 7'b0001_001 Write ChargerStatus() 7'b0001_001 Read ChargingCurrent() 7'b0001_001 Write ChargingVoltage() 7'b0001_001 Write AlarmWarning() 7'b0001_001 Write LTCO() 7'b0001_001 Write Read Alert Response 7'b0001_100 Address Read Byte ...
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LTC4101 OPERATION The RES_UR bit is set only when the SafetySignal resis- tance value is less than 575Ω. ALARM_INHIBITED bit is set if a valid AlarmWarning() message has been received and charging is inhibited as a result. This bit is ...
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OPERATION table defi nes the maximum permissible value of CHARG- ING_VOLTAGE that will not set the VOLTAGE_OR in the ChargerStatus() function for a given value Maximum ChargingVoltage() ILIM Short to GND 0x1090 (4240mV) 10kΩ ±1% 0x10D0 (4304mV) ...
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LTC4101 OPERATION SMBus Accelerator Pull-Ups Both SCL and SDA have SMBus accelerator circuits which reduce the rise time on systems with signifi cant capacitance on the two SMBus signals. The dynamic pull-up circuitry detects a rising edge on SDA or ...
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OPERATION Controlled Charging Algorithm Overview The following conditions must be met in order to allow controlled charging to start on the LTC4101: 1. The ChargingVoltage() AND ChargingCurrent() function must be written to non-zero values. 2. The SafetySignal must be RES_COLD, ...
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LTC4101 OPERATION When AC is present, the LTC4101 samples the value of the SafetySignal and updates the ChargerStatus register approximately every 32ms. The state machine successively samples the SafetySignal value starting with the RES_OR ≥ RES_COLD threshold, then RES_C0LD ≥ ...
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OPERATION The I Decoder Block LIM The value of an external resistor connected from this pin to GND determines one of four current limits that are used for maximum charging current value. These limits provide a measure of safety with ...
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LTC4101 OPERATION The Voltage DAC Block Note that the charger output voltage is offset by V Therefore, the value subtracted from the SMBus REF ChargingVoltage() value in order for the output voltage to be programmed properly (without ...
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OPERATION DCIN and CLP is ever less than –25mV, then the input FET is turned off quickly to prevent signifi cant reverse current from fl owing in the input FET. In this condition the CHGEN pin is driven low and ...
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LTC4101 APPLICATIONS INFORMATION Table 8. Recommended Resistor Values Adapter –7% Adapter Rating (A) Rating (A) 1.5 1.40 1.8 1.67 2.0 1.86 2.3 2.14 2.5 2.33 2.7 2.51 3.0 2.79 3.3 3.07 3.6 3.35 4.0 3.72 * Rounded to nearest 5% ...
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APPLICATIONS INFORMATION Table 10. Recommended Inductor Values Inductance I MAX V Range ( ≤ 7.5 16μH ± 20% 8μH ± 20% ≤ 9.0 20μH ± 20% 10μH ± 20% ≤ 12.0 24μH ± 20% 12μH ± 20% ≤ ...
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LTC4101 APPLICATIONS INFORMATION The Schottky diode D1, shown in the Typical Application on the back page, conducts during the dead-time between the conduction of the two power MOSFETs. This prevents the body diode of the bottom MOSFET from turning on ...
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APPLICATIONS INFORMATION the current used by the SMBus accelerators. ACCEL This directly depends on the SMBus frequency, duty cycle of messages sent on the SMBus and how long it takes to drive the SMBus ...
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LTC4101 APPLICATIONS INFORMATION The following equation shows the minimum C tolerance) capacitance values for stability when used with the compensation shown in the typical application on the back page 120/L1 OUT(MIN) The use of aluminum electrolytic for C1, ...
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APPLICATIONS INFORMATION essential. (See Figure 11.) Here is a PCB layout priority list for proper layout. Layout the PCB using this specifi c order. 1. Input capacitors need to be placed as close as possible to switching FET’s supply and ...
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LTC4101 PACKAGE DESCRIPTION 7.8 – 8.2 0.42 ±0.03 RECOMMENDED SOLDER PAD LAYOUT 5.00 – 5.60** (.197 – .221) 0.09 – 0.25 0.55 – 0.95 (.0035 – .010) (.022 – .037) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS 2. DIMENSIONS ARE IN ...
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... Added ‘SafetySignal (Thermistor) Value’ Section Changes to Typical Application Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC4101 ...
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... High Effi ciency Standalone Nickel Battery Charger LTC4060 Standalone Linear NiMH/NiCd Fast Charger LTC4100 Smart Battery Charger Controller LTC4412 Low Loss PowerPath Controller PowerPath is a trademark of Linear Technology Corporation. 30 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...