ADP3806JRU Analog Devices, ADP3806JRU Datasheet
ADP3806JRU
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ADP3806JRU Summary of contents
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VCC BST VREF + VREG UVLO BSTREG BIAS LOGIC SD CONTROL LC ADP3806 AGND High-Frequency Switch Mode GENERAL DESCRIPTION The ADP3806 is a complete Li-Ion battery-charging IC. The device combines high output voltage accuracy with constant current control to ...
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ADP3806–SPECIFICATIONS Parameter Conditions BATTERY SENSE INPUT ADP3806-12.6 V and 16.8 V ADP3806-12.525 V and 16 Input Resistance Part in Operation Input Current Part in Shutdown BATTERY SENSE INPUT ADP3806 V = 2.5 V ...
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Parameter Conditions ISET INPUT Charge Current Programming Function 0.0 V Programming Function Accuracy V ISET V ISET ISET Bias Current 0.0 V BATSEL INPUT V = 12.6 V BAT V = 16.8 V BAT BATSEL Input Current BOOST REGULATOR OUTPUT ...
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... Unless otherwise specified, all voltages are referenced to GND. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE Battery Package Model Voltage Description ADP3806JRU Adjustable TSSOP-24 ADP3806JRU-12.5 12.525 V/ TSSOP-24 16.7 V ADP3806JRU-12.6 12.600 V/ TSSOP-24 16.8 V PIN CONFIGURATION 24-Lead TSSOP VCC SYS– 23 DRVH 3 SYS+ ...
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V ACCURACY – % BAT 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0 TEMPERATURE – C 0.10 0.05 0 –0.05 ...
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ADP3806 18 VCC = 16V 250kHz OSC 500 1000 1500 2000 DRIVER LOAD CAPACITANCE – pF 1.0 0 100 C A ...
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VCC = 19V 86 V BAT FIGURE 0.1 1 CHARGE CURRENT – Amps CHARGE CHARGE ...
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ADP3806 THEORY OF OPERATION The ADP3806 combines a bootstrapped synchronous switching driver with programmable current control and accurate final battery voltage control in a Constant Current, Constant Voltage (CCCV) Li-Ion battery charger. High accuracy voltage control is needed to safely ...
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Typical values of R are in the range from and the input range of ISET is from If, for example charger is required, R could ...
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ADP3806 The oscillator frequency is set by the external capacitor at the CT pin and the internal current source of 150 A according to the following formula: 150 A f OSC ...
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Shutdown A high impedance CMOS logic input is provided to turn off the ADP3806. When the voltage less than 0.8 V, the ADP3806 is placed in low power shutdown. With the exception of the system current sense ...
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ADP3806 For an input voltage and inductance, the maximum RMS current is 0.26A. A typical ceramic capacitor is a good choice to absorb this current. Input Capacitor Ripple: As ...