Datasheet MCP73831, MCP73832 (Microchip) - 4

link to page 3
MCP73831/2 DC CHARACTERISTICS (CONTINUED) Electrical Specifications:
Unless otherwise indicated, all limits apply for VDD= [VREG(typical) + 0.3V] to 6V, TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (typical) + 1.0V]
Parameters Sym. Min. Typ. Max. Units Conditions Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current IPREG / IREG 7.5 10 12.5 % PROG = 2.0 kto 10 k Ratio 15 20 25 % PROG = 2.0 kto 10 k 30 40 50 % PROG = 2.0 kto 10 k — 100 — % No Preconditioning TA = -5°C to +55°C Precondition Voltage VPTH / VREG 64 66.5 69 % VBAT Low-to-High Threshold Ratio 69 71.5 74 % VBAT Low-to-High Precondition Hysteresis VPHYS — 110 — mV VBAT High-to-Low
Charge Termination
Charge Termination ITERM / IREG 3.75 5 6.25 % PROG = 2.0 kto 10 k Current Ratio 5.6 7.5 9.4 % PROG = 2.0 kto 10 k 8.5 10 11.5 % PROG = 2.0 kto 10 k 15 20 25 % PROG = 2.0 kto 10 k TA = -5°C to +55°C
Automatic Recharge
Recharge Voltage VRTH / VREG 91.5 94.0 96.5 % VBAT High-to-Low Threshold Ratio 94 96.5 99 % VBAT High-to-Low
Pass Transistor ON-Resistance
ON-Resistance RDSON — 350 — m VDD = 3.75V, TJ = 105°C
Battery Detection
Battery Detection Current IBAT_DET — 6 — µA VBAT Source Current No-Battery-Present VNO_BAT — VREG + — V VBAT Voltage ≥ VNO_BAT for Threshold 100 mV No Battery condition No-Battery-Present ZNO_BAT 2 — — M VBAT Impedance ≥ ZNO_BAT Impedance for No Battery condition,
Note 1 Battery Discharge Current
Output Reverse Leakage IDISCHARGE — 0.15 2 µA PROG Floating Current — 0.25 2 µA VDD Floating — 0.15 2 µA VDD < VSTOP — -5.5 -15 µA Charge Complete
Status Indicator – STAT
Sink Current ISINK — — 25 mA Low Output Voltage VOL — 0.4 1 V ISINK = 4 mA Source Current ISOURCE — — 35 mA High Output Voltage VOH — VDD-0.4 VDD - 1 V ISOURCE = 4 mA (MCP73831) Input Leakage Current ILK — 0.03 1 µA High-Impedance
PROG Input
Charge Impedance RPROG 2 — 67 k Range Minimum Shutdown RPROG 70 — 200 k Impedance
Automatic Power Down
Automatic Power Down VPDENTER VDD<(VBAT VDD<(VBAT — 3.5V  VBAT  VREG Entry Threshold +20 mV) +50 mV) VDD Falling
Note 1:
Not production tested. Ensured by design. DS20001984G-page 4  2005-2014 Microchip Technology Inc. Document Outline MCP73831/2 Functional Block Diagram 1.0 Electrical Characteristics 2.0 Typical Performance Curves FIGURE 2-1: Battery Regulation Voltage (VBAT) vs. Supply Voltage (VDD). FIGURE 2-2: Battery Regulation Voltage (VBAT) vs. Ambient Temperature (TA). FIGURE 2-3: Output Leakage Current (IDISCHARGE) vs. Battery Regulation Voltage (VBAT). FIGURE 2-4: Charge Current (IOUT) vs. Programming Resistor (RPROG). FIGURE 2-5: Charge Current (IOUT) vs. Supply Voltage (VDD). FIGURE 2-6: Charge Current (IOUT) vs. Supply Voltage (VDD). FIGURE 2-7: Charge Current (IOUT) vs. Ambient Temperature (TA). FIGURE 2-8: Charge Current (IOUT) vs. Ambient Temperature (TA). FIGURE 2-9: Charge Current (IOUT) vs. Junction Temperature (TJ). FIGURE 2-10: Charge Current (IOUT) vs. Junction Temperature (TJ). FIGURE 2-11: Power Supply Ripple Rejection (PSRR). FIGURE 2-12: Power Supply Ripple Rejection (PSRR). FIGURE 2-13: Line Transient Response. FIGURE 2-14: Line Transient Response. FIGURE 2-15: Load Transient Response. FIGURE 2-16: Load Transient Response. FIGURE 2-17: Complete Charge Cycle (180 mAh Li-Ion Battery). FIGURE 2-18: Complete Charge Cycle (1000 mAh Li-Ion Battery). 3.0 Pin Description TABLE 3-1: Pin Function TableS 3.1 Battery Management Input Supply (VDD) 3.2 Battery Charge Control Output (VBAT) 3.3 Charge Status Output (STAT) 3.4 Battery Management 0V Reference (VSS) 3.5 Current Regulation Set (PROG) 3.6 Exposed Thermal Pad (EP) 4.0 Device Overview FIGURE 4-1: Flowchart. 4.1 Undervoltage Lockout (UVLO) 4.2 Battery Detection 4.3 Charge Qualification 4.4 Preconditioning 4.5 Fast Charge Constant-Current Mode 4.6 Constant-Voltage Mode 4.7 Charge Termination 4.8 Automatic Recharge 4.9 Thermal Regulation FIGURE 4-2: Thermal Regulation. 4.10 Thermal Shutdown 5.0 Detailed Description 5.1 Analog Circuitry 5.2 Digital Circuitry TABLE 5-1: Status Output 6.0 Applications FIGURE 6-1: Typical Application Circuit. FIGURE 6-2: Typical Charge Profile (180 mAh Battery). FIGURE 6-3: Typical Charge Profile in Thermal Regulation (1000 mAh Battery). 6.1 Application Circuit Design 6.2 PCB Layout Issues FIGURE 6-4: Typical Layout (Top). FIGURE 6-5: Typical Layout (Bottom). 7.0 Packaging Information 7.1 Package Marking Information Appendix A: Revision History Product ID System Trademarks Worldwide Sales