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MP26028EQ Datasheet(PDF) 4 Page - Monolithic Power Systems |
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MP26028EQ Datasheet(HTML) 4 Page - Monolithic Power Systems |
4 / 11 page MP26028 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE MP26028 Rev.1.01 www.MonolithicPower.com 4 10/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. PIN FUNCTIONS Pin # Name Description 1 IN Input Supply Pin. IN receives the AC adapter or USB supply voltage. 2 CHG Open-Drain Charge Status Indicator. This pin is low during charging. 3 ACOK Open-Drain Input ACOK Indicator. This pin is low if the voltage at the IN pin is between 2.5V and 6.5V. 4 EN Charger IC Enable. An input “Low” signal at this pin or if the pin is floating will enable the IC. 5 VBIAS Bias Voltage for internal circuitry. To generate the bias voltage, connect a 500kΩ resistor (R1) from this pin to the IN pin and a 100kΩ resistor (R2) from this pin to ground. Shown in Typical Application circuit on front page 6 Exposed Pad GND Ground. Connect exposed pad to the GND pin 7 SS Soft-Start Timer. Connect this pin to an external capacitor to program the soft-start startup time using the equation: sec m 20 F 1 . 0 C T SS SS . 8 IBF Charge Status Threshold Program. Connect this pin to an external resistor to program the charge termination current or battery full charge current. 9 ISET Constant Charge Current Program. Connect this pin to an external resistor to program the charging current in CC Mode. 10 BATT Charger Output. |
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