LTC3566EUF-2#PBF Linear Technology, LTC3566EUF-2#PBF Datasheet
LTC3566EUF-2#PBF
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LTC3566EUF-2#PBF Summary of contents
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... QFN surface mount package. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath and Bat-Track are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6522118, 6404251. 3.3μH ...
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... LEAD FREE FINISH TAPE AND REEL LTC3566EUF#PBF LTC3566EUF#TRPBF LTC3566EUF-2#PBF LTC3566EUF-2#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 3.8V unless otherwise noted. IN1 OUT1 SYMBOL PARAMETER I V Current Available Before OUT OUT (PowerPath) Loading BAT V CLPROG Servo Voltage in Current CLPROG Limit ...
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... OUT OUT V UVLO - V Rising OUT OUT f Oscillator Frequency OSC I Input Current VIN1 Burst Mode is a registered trademark of Linear Technology Corporation. 4 The denotes the specifi cations which apply over the full operating ● = 25° 5V 3.8V BUS BAT CONDITIONS and BAT) Rising Threshold ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 3.8V unless otherwise noted. IN1 OUT1 SYMBOL PARAMETER V Minimum Regulated Output Voltage OUT1(LOW) V Maximum Regulated Output Voltage OUT1(HIGH) I Forward Current Limit (Switch A) ...
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LTC3566/LTC3566-2 TYPICAL PERFORMANCE CHARACTERISTICS Ideal Diode V-I Characteristics 1.0 INTERNAL IDEAL DIODE WITH SUPPLEMENTAL EXTERNAL VISHAY 0.8 Si2333 PMOS 0.6 INTERNAL IDEAL DIODE ONLY 0.4 0 BUS BUS 0 0 0.04 0.08 0.12 0.16 ...
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TYPICAL PERFORMANCE CHARACTERISTICS V Quiescent Current vs V BUS BUS Voltage (Suspend) 50 BAT = 3. 0mA VOUT VOLTAGE (V) BUS 3566 G09 3.3V LDO Output Voltage ...
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LTC3566/LTC3566-2 TYPICAL PERFORMANCE CHARACTERISTICS V Quiescent Current in BUS Suspend vs Temperature 0μA VOUT –40 – TEMPERATURE (°C) 3566 G18 R for Buck-Boost Regulator DS(ON) Power Switches vs Temperature 0.30 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Buck-Boost Regulator Load Regulation 3.333 IN1 V = 3.6V IN1 V = 4.5V 3.322 IN1 3.311 3.300 3.289 3.278 V = 3.3V OUT1 T = 27°C A TYPE 3 COMPENSATION 3.267 1 10 100 ...
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LTC3566/LTC3566-2 PIN FUNCTIONS SWCD1 (Pin 11): Switch Node for the (Buck-Boost) Switching Regulator. Connected to internal power switches C and D. External inductor connects between this node and SWAB1. ILIM0 (Pin 13): Logic Input. Control pin for ILIM0 bit of ...
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BLOCK DIAGRAM V BUS 21 SUSPEND LDO 500μA/2.5mA CLPROG 2 BATTERY NTC TEMPERATURE 3 MONITOR CHRG 16 CHARGE STATUS ILIM DECODE LOGIC CHRGEN 23 EN1 24 ILIM0 13 ILIM1 14 MODE 8 2.25MHz PowerPath BUCK REGULATOR – – ...
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LTC3566/LTC3566-2 OPERATION Introduction The LTC3566 family are highly integrated power manage- ment ICs which includes a high effi ciency switch mode PowerPath controller, a battery charger, an ideal diode, an always-on LDO, and a 1A buck-boost switching regulator. The entire ...
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OPERATION the programmed limit, CLPROG reaches V and power out is held constant. The input current is programmed by the ILIM0 and ILIM1 pins. It can be confi gured to limit average input current to one of several possible settings ...
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LTC3566/LTC3566-2 OPERATION TO USB V BUS OR WALL 21 ADAPTER I /N SWITCH PWM AND GATE DRIVE CLPROG – 1.188V AVERAGE INPUT CURRENT LIMIT CONTROLLER conductance is needed, an external P-channel MOSFET transistor can be added from BAT ...
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OPERATION Battery Charger The LTC3566 family includes a constant-current/constant- voltage battery charger with automatic recharge, automatic termination by safety timer, low voltage trickle charging, bad cell detection and thermistor sensor input for out-of- temperature charge pausing. Battery Preconditioning When a ...
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LTC3566/LTC3566-2 OPERATION The signal at the CHRG pin can be easily recognized as one of the above four states by either a human or a mi- croprocessor. An open drain output, the CHRG pin can drive an indicator LED through ...
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OPERATION of the NTC thermistor rises. The LTC3566 family is also designed to pause charging when the value of the NTC thermistor increases to 3.25 times the value of R25. For Vishay curve 1 this resistance, 325k, corresponds to approximately ...
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LTC3566/LTC3566-2 OPERATION Buck-Boost Regulator Burst Mode Operation In Burst Mode operation, the buck-boost regulator uses a hysteretic FB1 voltage algorithm to control the output voltage. By limiting FET switching and using a hysteretic control loop, switching losses are greatly reduced. ...
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APPLICATIONS INFORMATION CLPROG Resistor and Capacitor As described in the High Effi ciency Switching PowerPath Controller section, the resistor on the CLPROG pin deter- mines the average input current limit when the switching regulator is set to either the 1x ...
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LTC3566/LTC3566-2 APPLICATIONS INFORMATION Buck-Boost Regulator Inductor Selection Many different sizes and shapes of inductors are avail- able from numerous manufacturers. Choosing the right inductor from such a large selection of devices can be overwhelming, but following a few basic guidelines ...
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APPLICATIONS INFORMATION V and V Bypass Capacitors BUS OUT The style and value of capacitors used with the LTC3566 family determine several important parameters such as regulator control-loop stability and input voltage ripple. Because the LTC3566 family uses a step-down ...
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LTC3566/LTC3566-2 APPLICATIONS INFORMATION and the V current limit is satisfi ed. Programming the BUS battery charger for more current than is available will not cause the average input current limit to be violated. It will merely allow the battery charger ...
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APPLICATIONS INFORMATION where r and r are the resistance ratios at the de- HOT COLD sired hot and cold trip points. Note that these equations are linked. Therefore, only one of the two trip points can be chosen, the other ...
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LTC3566/LTC3566-2 APPLICATIONS INFORMATION smaller 0805 case. The size of the input overshoot will be determined by the Q of the resonant tank circuit formed by C and the input lead inductance recommended IN to measure the input ringing ...
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APPLICATIONS INFORMATION A Type III compensation network attempts to introduce a phase bump at a higher frequency than the LC double pole. This allows the system to cross unity gain after the LC double pole, and achieve a higher bandwidth. ...
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LTC3566/LTC3566-2 APPLICATIONS INFORMATION Figure 8. Higher Frequency Ground Currents Follow Their Incident Path. Slices in the Ground Plane Cause High Voltage and Increased Emissions. possible and that there be an unbroken ground plane under the IC and all of its ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 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. V ...
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... High Effi ciency 1.2A Charger from 6V to 38V (60V Maximum) Input Charges Single Cell Li-Ion Batteries Directly from a USB Port, Thermal Regulation; 200mΩ Ideal Diode with <50mΩ option, 3mm × 6mm DFN-22 Package Bat-Track Adaptive Output Control www.linear.com ● 3566fb LT 0209 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 ...