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ADP2291ACPZ-R7 数据表(PDF) 3 Page - Analog Devices |
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ADP2291ACPZ-R7 数据表(HTML) 3 Page - Analog Devices |
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3 / 20 page ![]() ADP2291 Rev. 0 | Page 3 of 20 SPECIFICATIONS VIN = 5.5 V, VBAT = 4.2 V, RADJ open, TA = –40°C to +85°C, typical values are at 25°C unless otherwise noted.1 Table 1. Electrical Characteristics Parameter Conditions Min Typ Max Unit Power Supply, IN Input Voltage 4.5 12 V Current Draw Fast charge/precharge/end-of-charge modes Timeout/shutdown/battery fault 6 1.4 9 1.8 mA mA Battery Voltage, BAT Voltage Accuracy, End-of-charge (VBAT, EOC) TA = 0°C to +50°C VIN = 4.5 V to 12 V VIN – VCS = VRS/10 4.158 4.2 4.242 V Load Regulation, No Battery VIN – VCS = 0 to VRS –80 mV Current Draw Timeout mode VIN = 4.5 V to 12 V 45 µA Current Draw Battery fault/shutdown mode VIN = 4.5 V to 12 V 0.1 1 µA Reverse Leakage Current Power-down mode VIN = float, VBAT = 4.2 V 0.1 µA Fast Charge Mode Sense Voltage Setpoint (VRS) VIN – VCS, RADJ = open VIN = 4.5 V to 12 V VBAT = 3.6 V 140 150 160 mV Sense Voltage Setpoint (VRS) VIN – VCS, RADJ = 100 kΩ VIN = 4.5 V to 12 V VBAT = 3.6 V 40 50 60 mV Current Regulation Adjustment per V of (3 V – VADJ) 67 mV/V Precharge Mode Sense Voltage Setpoint (VRS) VIN – VCS, RADJ = open VIN = 4.5 V to 12 V VBAT = 2 V 10 15 20 mV Sense Voltage Setpoint (VRS) VIN – VCS, RADJ = 100 kΩ VIN = 4.5 V to 12 V VBAT = 2 V 5 10 15 mV BAT Precharge Threshold VBAT rising 2.65 2.85 V Hysteresis 70 mV Shutdown Mode ADJ Shutdown Threshold VADJ falling, VIN = 4.5 V 0.30 0.45 V Hysteresis 40 mV Pullup current from ADJ VADJ = 0 40 µA Power-Down Mode VIN Powerdown Threshold VIN rising 3.6 4 V Hysteresis 220 mV VIN_Good Comparator Threshold (VIN > VBAT) VIN rising 125 170 220 mV Hysteresis 110 mV EOC Comparator Current Threshold VIN – VCS falling, RADJ = open, relative to VRS 7 10 13 % Current Threshold VIN – VCS falling, RADJ = 100 kΩ, relative to VRS 6 10 16 % Hysteresis 12 mV Restart Comparator BAT Restart Threshold VIN > 4.5 V, VBAT falling, relative to VBAT, EOC –170 mV |
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