MCP73871-2AAI/SS Microchip Technology, MCP73871-2AAI/SS Datasheet
MCP73871-2AAI/SS
Specifications of MCP73871-2AAI/SS
Related parts for MCP73871-2AAI/SS
MCP73871-2AAI/SS Summary of contents
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... This thermal regulation optimizes the charge cycle time while maintaining device reliability. The MCP73871 device includes a low battery indicator, a power-good indicator and two charge status indica- tors that allows for outputs with LEDs or communica- tion with host microcontrollers. The MCP73871 device is fully specified over the ambient temperature range of -40° ...
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... Hi Low Hi Low Hi Low Hi Low DS22090A-page 2 MCP73871 20-Lead QFN BAT EXPOSED BAT PAD 3 13 PROG1 PROG3 MCP73871 Typical Application OUT 2 VPCC 14, 15 BAT 6 PG THERM 5 7 STAT2 10 kΩ 8 STAT1 PROG1 R PROG1 13 LBO 3 SEL PROG3 PROG2 10, 11 System Load 4.7 µF 4.7 µ ...
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... CHARGE CONTROL, HTVT TIMER, STAT2 AND + STATUS LOGIC TE LTVT + © 2008 Microchip Technology Inc. V REF - V /2 REF - V - REF PRECONDITION + V - REF - V REF V - REF V - REF V REF - - MCP73871 OUT 0.2Ω Ideal Diode, Synchronous Switch V BAT PROG1 PROG3 SEL PROG2 V BAT_SENSE 50 µA THERM DS22090A-page 3 ...
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... MCP73871 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† V ....................................................................................7. All Inputs and Outputs w.r.t. ................ V -0. BAT Maximum Junction Temperature, T ............Internally Limited J Storage temperature .....................................-65°C to +150°C ESD protection on all pins Human Body Model (1.5 kΩ in Series with 100pF) ........≥ Machine Model (200 pF, No Series Resistance) .............300V ...
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... Disable — LBO 2.85 3.0 3.15 2.95 3.1 3.25 3.05 3.2 3.35 V — 150 — LBO_HYS MCP73871 = -40°C to +85°C. A Units Conditions mA PROG2 = Low, SEL = Low mA PROG2 = High, SEL = Low T =-5°C to +55° SEL = High, T =-5°C to +55° ...
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... MCP73871 DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits apply for V Typical values are at +25° (typical) + 1.0V] IN REG Parameters PROG1 Input (PROG1) Charge Impedance Range PROG3 Input (PROG3) Termination Impedance Range PROG2 Input (PROG2) Input High Voltage Level Input Low Voltage Level ...
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... ON = 4.6V to 6V. IN (typical) + 1.0V] Sym Min Typ Max T -40 — + -40 — +125 J T -65 — +150 A θ — 35 — JA MCP73871 Units Conditions ms V Low to High < > V BAT PTH BAT PTH ms I Rising to 90 OUT REG ms Average V Rise/Fall BAT ms Average I Falling OUT ...
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... MCP73871 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...
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... FIGURE 2-11: OUT Ambient Temperature (T 110 108 106 104 102 100 5.8 6.0 -45 -30 ) vs. FIGURE 2-12: OUT Ambient Temperature (T MCP73871 = +25°C, Constant-voltage mode kΩ 4.8 5.0 5.3 5.5 5.8 6.0 Supply Voltage (V) Charge Current (I ) vs. OUT ). kΩ PROG V = 5.2V DD -30 ...
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... MCP73871 Note: Unless otherwise indicated kΩ PROG 5. -45 -30 - Ambient Temperature (°C) FIGURE 2-13: Charge Current (I Ambient Temperature ( 1200 1000 800 600 400 200 kΩ PROG 100 Ambient Temperature (°C) FIGURE 2-14: Charge Current (I Junction Temperature ( 600 500 400 300 200 ...
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... FIGURE 2-23 500 mA. OUT 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.0002 FIGURE 2-24: MCP73871 = +25°C, Constant-voltage mode. A 0.2 = 100 mA 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0 0.001 0.002 0.003 0.004 Time (s) Load Transient Response. 0.2 I ...
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... PROG1 0 PROG3 0.6 0.4 0 Time (Minute) Complete Charge Cycle 2 1.8 1.6 1.4 Preconditioning Threshold Voltage 1.2 1 Fast Charge (Constant Current) 0.8 MCP73871 0 5. PROG1 0 PROG3 0 0.2 0.4 0.6 0.8 1 Time (Minute) Typical Charge Profile in © 2008 Microchip Technology Inc. ...
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... SS 4.7 µF. 3.2 System Output Terminal (OUT) The MCP73871 device powers the system via output terminals while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and the system to run with an absent or defective battery pack ...
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... Power-Good (PG) The power-good (PG open-drain logic output for input power supply indication. The PG output is low whenever the input to the MCP73871 device is above the UVLO threshold and greater than the battery volt- age. The PG output can be used as an indication to the user via an illuminated LED or to the system via a pull- ...
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... Charge Enable (CE) With the CE input Low, the Li-Ion battery charger feature of the MCP73871 will be disabled. The charger feature is enabled when CE is active High. Allowing the CE pin to float during the charge cycle may cause system instability. The CE input is compatible with 1.8V logic. Refer to Section 6.0 “ ...
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... MCP73871 4.0 DEVICE OVERVIEW The MCP73871 device is a simple, but fully integrated linear charge management controllers with system load sharing feature. Figure 4-1 depicts the opera- tional flow algorithm. TEMPERATURE FAULT No Charge Current STAT1 = LOW STAT2 = LOW PG = LOW Timer Suspended FIGURE 4-1: MCP73871 Device Flow Chart ...
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... The system load sharing feature gives the system priority on input power, allowing the system to power- up with deeply depleted battery packs. With the SEL input active Low, the MCP73871 device is designed to provide system power and Li-Ion battery charging from a USB input while adhering to the current limits governed by the USB specification ...
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... FIGURE 4-3: 4.10 THERMAL SHUTDOWN The MCP73871 device suspends charge if the die tem- perature exceeds 150°C. Charging will resume when the die temperature has cooled by approximately 10°C. The thermal shutdown is a secondary safety feature in automatic the event that there is a failure within the thermal regulation circuitry ...
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... The VPCC feature functions identically for USB port or ac-dc adapter inputs. This feature can be disabled by connecting the VPCC to IN pin. © 2008 Microchip Technology Inc. MCP73871 4.13 INPUT CURRENT LIMIT CONTROL (ICLC) If the input current threshold is reached, then the battery charging current is reduced ...
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... USB specification. The host microcontroller has the option selecting either a 100 mA ( 500 mA (H) current limit based on the PROG2 input. With the SEL input High, the MCP73871 device limits the input current to 1.8A. The pro- pins. An internal grammed charge current is established using a single ...
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... However, there is a diode path back to the input, and as such, the output should only be pulled up to the input. The PG output is low whenever the input to the MCP73871 device is above the UVLO threshold and greater than the battery voltage. The PG output can be used as an indication to the system that an input source other than the battery is supplying power. © ...
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... MCP73871 6.0 APPLICATIONS The MCP73871 device is designed to operate in conjunction with a host microcontroller or in stand- alone applications. The MCP73871 device provides the preferred charge algorithm for Lithium-Ion and 5V AC-DC Adapter or USB Port 18 µF 470Ω 470Ω 470Ω 330 kΩ Hi 110 kΩ ...
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... External Capacitors from the The MCP73871 device is stable with or without a battery load. In order to maintain good AC stability in the Constant Voltage mode, a minimum capacitance of 4.7 µF is recommended to bypass the V This capacitance provides compensation when there is no battery load. In addition, the battery and intercon- nections appear inductive at high frequencies ...
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... Due to the safety concerns when using Lithium-Ion batteries and power dissipa- tion of linear solutions, the system load when design with the MCP73871 device is recommended to be less than 1A or the maximum discharge rate of the selected Lithium-Ion cell. Whichever is smaller is recommended. ...
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... Microchip Technology Inc. Marking Marking Part Number * Code 1AA MCP73871T-1AAI/ML 1CA MCP73871T-1CAI/ML 1CC MCP73871T-1CCI/ML 2AA MCP73871T-2AAI/ML 2CA MCP73871T-2CAI/ML 2CC MCP73871T-2CCI/ML 3CA MCP73871T-3CAI/ML 3CC MCP73871T-3CCI/ML 4CA MCP73871T-4CAI/ML 4CC MCP73871T-4CCI/ML MCP73871 Example: 73871 Code 1AA 1AA e I/ML^^ ...
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... MCP73871 D TOP VIEW A3 DS22090A-page 26 EXPOSED PAD NOTE 1 BOTTOM VIEW © 2008 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (July 2008) • Original Release of this Document. © 2008 Microchip Technology Inc. MCP73871 DS22090A-page 27 ...
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... MCP73871 NOTES: DS22090A-page 28 © 2008 Microchip Technology Inc. ...
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... X/ XX Device Output Temp. Package Options* Device: MCP73871: USB/AC Battery Charger with PPM MCP73871T: USB/AC Battery Charger with PPM (Tape and Reel) Output Options * * * Refer to table below for different operational options Consult Factory for Alternative Device Options. Temperature -40°C to +85°C ...
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... MCP73871 NOTES: DS22090A-page 30 © 2008 Microchip Technology Inc. ...
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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2008 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...