MCP73861-I/SL Microchip Technology Inc., MCP73861-I/SL Datasheet
MCP73861-I/SL
Specifications of MCP73861-I/SL
Available stocks
Related parts for MCP73861-I/SL
MCP73861-I/SL Summary of contents
Page 1
... The only difference between the MCP73861/2 and MCP73863/4, respectively, is the function of the charge status output (STAT1) when a charge cycle has been completed. The MCP73861/2 flash the output, while the MCP73863/4 turn the output off ...
Page 2
... DD BAT3 4.7 µ SET BAT 14 6 THREF EN 6. THERM STAT1 7. TIMER STAT2 0 µF PROG SS MCP73861 REF Charge Current 90 k Control Amplifier + Voltage Control Amplifier – + – V REF Charge_OK Precondition Precon Control Constant-Voltage/ Recharge Comp. V UVLO V (1.2V) REF Charge Control, I /12 ...
Page 3
... MCP73861/2/3/4 (typ.) + 0.3V] to 12V, Unit Conditions s V MCP73861/3 V MCP73862/4 µA Disabled mA Operating V MCP73861/3 V MCP73862/4 V Low-to-High DD V MCP73861/3 V MCP73862/4 V High-to-Low DD V MCP73861/ SET SS V MCP73861/ SET DD V MCP73862/ SET SS V MCP73862/ SET (typ.) + 1V], DD REG OUT T = -5°C to +55°C A ...
Page 4
... Unit Conditions s mA PROG = OPEN mA PROG = PROG = 1 =-5°C to +55° MCP73861/ SET SS V MCP73861/ SET DD V MCP73862/ SET SS V MCP73862/ SET DD V Low-to-High BAT mA PROG = OPEN mA PROG = PROG = 1 =-5°C to +55° ...
Page 5
... Sym Min Typ Max T -40 — + -40 — +125 J T -65 — +150 A — 37 — JA — 74 — JA MCP73861/2/3/4 (typ.) + 0.3V] to 12V, Unit Conditions s °C °C (typ.) + 0.3V] to 12V, Conditions V Low-to-High DD V < > V BAT PTH BAT PTH I Rising to 90 OUT REG C = 0.1 µF TIMER = 0.1 µ ...
Page 6
... FIGURE 2-6: Supply Voltage (V = +25°C, Constant-voltage mode. A MCP73861 SET 5.2V DD 100 1000 Charge Current (mA) Supply Current ( OUT MCP73861 SET 1000 mA OUT 6.0 7.5 9.0 10.5 12.0 Supply Voltage (V) Supply Current ( MCP73861 SET OUT 6 ...
Page 7
... REG OUT 1.60 MCP73861/3 V 1.40 SET +85°C OUT 1.20 +25°C 1.00 -40°C 0.80 0.60 0.40 4.0 4.4 FIGURE 2-10: Ambient Temperature (T 4.207 MCP73861/3 4.205 V SET I OUT 4.203 4.201 4.199 4.197 4.195 4.193 10.5 12.0 FIGURE 2-11 vs. Ambient Temperature (T ). BAT DD 2.520 MCP73861/3 V ...
Page 8
... MCP73861/2/3/4 TYPICAL PERFORMANCE CURVES (CONTINUED) NOTE: Unless otherwise indicated 8.407 MCP73862 8.405 SET 9.4V DD 8.403 8.401 8.399 8.397 8.395 8.393 10 100 Charge Current (mA) FIGURE 2-13: Battery Regulation Voltage (V ) vs. Charge Current (I ). BAT OUT 8.407 8.405 MCP73862/4 8.403 SET 1000 mA OUT 8.401 8 ...
Page 9
... Thermistor Bias Current (µA) FIGURE 2-21: Thermistor Reference Voltage (V ) vs. Thermistor Bias Current THREF (I ). THREF © 2005 Microchip Technology Inc. MCP73861/2/3 (typ and T REG OUT 1.60 MCP73862/4 V 1.40 SET +85° OUT 1.20 +25°C 1.00 -40° ...
Page 10
... Frequency (kHz) FIGURE 2-27: Power Supply Ripple Rejection. DS21893C-page (typ and T REG OUT BAT MCP73861 FIGURE 2-28: MCP73861 V 5. OUT BAT I OUT FIGURE 2-29: 0 -10 -20 -30 -40 -50 -60 -70 -80 100 1000 0.01 FIGURE 2-30: Rejection. = +25°C, Constant-voltage mode ...
Page 11
... Programming Resistor (R ). PROG © 2005 Microchip Technology Inc (typ and T REG OUT 505 MCP73861/2/3/4 V 503 R 501 499 497 495 493 536 0 ) vs. FIGURE 2-32: OUT Ambient Temperature (T MCP73861/2/3/4 = +25°C, Constant-voltage mode SET DD = 1.6 k PROG Ambient Temperature (°C) Charge Current (I ) vs. OUT ). A DS21893C-page 11 ...
Page 12
... V SS2 STAT2 16 2 STAT1 3.1 Voltage Regulation Selection (V ) SET MCP73861/3: Connect for 4.1V regulation SET SS voltage, connect to V for 4.2V regulation voltage. DD MCP73862/4: Connect for 8.2V regulation SET SS voltage, connect to V for 8.4V regulation voltage. DD 3.2 Battery Management Input Supply ...
Page 13
... This input is tied directly to the positive BAT terminal of the battery. The MCP7386X selects the voltage regulation value based on the state of V With V tied the MCP73861/3 and SET SS © 2005 Microchip Technology Inc. MCP73861/2/3/4 MCP73862/4 regulate to 4.1V and 8.2V, respectively. With V ...
Page 14
... MCP73861/2/3/4 FIGURE 4-2: Operational Flow Algorithm. DS21893C-page 14 © 2005 Microchip Technology Inc. ...
Page 15
... V V /4. THREF 5.1.4 CELL TEMPERATURE SENSOR INPUT (THERM) The MCP73861/2/3/4 continuously monitors tempera- ture by comparing the voltage between the THERM input and V with the upper and lower temperature SS thresholds. A negative or positive temperature coefficient, NTC or PTC thermistor and an external voltage-divider typically develop this voltage. The temperature sensing circuit has its own reference to which it performs a ratio metric comparison ...
Page 16
... The V input selects the regulated output voltage of SET the MCP7386X. With V MCP73861/3 and MCP73862/4 regulate to 4.1V and 8.2V, respectively. With V MCP73861/3 and MCP73862/4 regulate to 4.2V and 8.4V, respectively. 5.2.3 LOGIC ENABLE (EN) STAT2 The logic enable input pin (EN) can be used to terminate a charge at any time during the charge cycle, ...
Page 17
... Microchip Technology Inc. MCP73861/2/3/4 Constant-current Figure 6-1 depicts a typical stand-alone application circuit, while Figures 6-2 accompanying charge profile. STAT1 EN V SS2 SET BAT3 DD1 BAT2 2 11 MCP73861 V V DD2 BAT1 SS1 SS3 PROG TIMER C R TIMER PROG Constant-Current Constant-Voltage ...
Page 18
... MCP73861/2/3/4 Preconditioning Mode Regulation Voltage (V ) REG Regulation Current (I ) REG Transition Threshold (V ) PTH Precondition Current (I ) PREG Termination Current (I ) TERM Precondition Safety Timer FIGURE 6-3: Typical Charge Profile in Thermal Regulation. 6.1 Application Circuit Design Due to the low efficiency of linear charging, the most important factors are thermal design and cost, which ...
Page 19
... The current-limited, open-drain outputs can be used to illuminate external LEDs. Refer to Table 5-1 for a summary of the state of the status outputs during a charge cycle. © 2005 Microchip Technology Inc. MCP73861/2/3/4 6.2 PCB Layout Issues For optimum voltage regulation, place the battery pack = 1.61W as close as possible to the device’ ...
Page 20
... In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. DS21893C-page 20 Example 73861 0532 256 Example: MCP73861 e I/SL^^ 3 0532256 © 2005 Microchip Technology Inc. ...
Page 21
... REF E .152 .157 .163 .090 .104 .106 D .152 .157 .163 .090 .104 .106 b .010 .012 .014 L .012 .016 .020 MCP73861/2/3 BOTTOM VIEW MILLIMETERS* MIN NOM MAX 16 0.65 BSC 0.80 0.90 1.00 0.00 0.02 0.05 0.20 REF 3.85 4.00 4.15 2.29 2 ...
Page 22
... MCP73861/2/3/4 16-Lead Plastic Small Outline (SL) – Narrow 150 mil Body (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...
Page 23
... Added MCP73863 and MCP73864 devices throughout data sheet. 2. Added Appendix A: Revision History. 3. Updated QFN and SOIC package diagrams. Revision B (December 2004) • Added SOIC package throughout data sheet. Revision A (June 2004) • Original Release of this Document. © 2005 Microchip Technology Inc. MCP73861/2/3/4 DS21893C-page 23 ...
Page 24
... MCP73861/2/3/4 NOTES: DS21893C-page 24 © 2005 Microchip Technology Inc. ...
Page 25
... Microchip Technology Inc. MCP73861/2/3/4 . Examples: a) MCP73861-I/ML: Single-Cell Controller 16LD-QFN package. b) MCP73861T-I/ML: Tape and Reel, Single-Cell Controller 16LD-QFN package. c) MCP73861-I/SL: Single-Cell Controller 16LD-SOIC package. d) MCP73861T-I/SL: Tape and Reel, Single-Cell Controller 16LD-SOIC package. a) MCP73862-I/ML: Dual-Cell Controller 16LD-QFN package. b) MCP73862T-I/ML: Tape and Reel, Dual-Cell Controller 16LD-QFN package ...
Page 26
... MCP73861/2/3/4 NOTES: DS21893C-page 26 © 2005 Microchip Technology Inc. ...
Page 27
... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2005 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...
Page 28
... 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 © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...