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ACT2801 Datasheet(PDF) 3 Page - Active-Semi, Inc |
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ACT2801 Datasheet(HTML) 3 Page - Active-Semi, Inc |
3 / 23 page Rev 2, 15-Apr-14 Innovative PowerTM - 3 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 HZ Boost/high-Z mode enable pin, internally pulled up by a 3MΩ resistor to battery. When HZ pin is pulled ground, boost is enabled if VIN is not present. 2 PB Push button input, connect a push button from this pin to AGND, internally pulled up by a 3MΩ resistor to battery. PB starts up boost converter if HZ pin is grounded and VIN is not present. When this pin is pushed for 100ms, LED1-4 indicators are enable for 5 seconds. For ACT2801C, if this pin is pushed for 3s, Flashlight is enabled. 3 AGND Logic Ground. 4 nPG Drive external P-FET to protect output short circuit and leakage during shutdown. nPG pin is pulled up to VOUT internally. nPG pin is pulled low if VOUT is in the range. 5 ILIM Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 0.5A-2.0A. 6 VIN USB or AC adaptor input. When VIN is valid, charge and power path is enabled. 7, 8 VOUT Output pin. Bypass to PGND with a high quality low ESR and ESL ceramic capacitor placed as close to the IC as possible. 9, 10 SW Internal switch to output inductor terminal. 11 PGND Power ground. PGND is connected to the source of low-side N-channel MOSFET and the MOSFET’s gate driver. 12 BAT Battery input. Connected to the battery pack positive terminal to provide power in High- Z mode. Bypass to PGND with a high quality ceramic capacitor placed as close to the IC as possible. 13 CSP Positive terminal of charge current sense input. Kevin sense is required with 10nF ceramic capacitor right across CSP and CSN pins. 14 CSN Negative terminal of charge current sense input. 15 IOST Output current setting. Connect a resistor from this pin to AGND to set output constant current. The current setting ranges from 0.5A-1.5A. 16 ICST Fast charge current setting pin. Connect a resistor from this pin to AGND to set the charge current. The current setting ranges from 0.5A-1.5A. 17 BTV Battery termination voltage setting. Connect a resistor from this pin to AGND to program battery charge termination voltage. 18 LED1 Battery level indicator. An internal 3.5mA sink current limit is built in. 19 LED2 Battery level indicator. An internal 3.5mA sink current limit is built in. 20 LED3 Battery level indicator. An internal 3.5mA sink current limit is built in. 21 LED4 Battery level indicator. An internal 3.5mA sink current limit is built in. 22 RIMC Battery impendence compensation input. Connect to a resistor from this pin to APNG to program the battery impedance. 23 BLVS Battery level voltage shift. Connect a resistor from this pin to AGND to shift the battery LED indication thresholds. 24 TH/FLD TH: ACT2801 Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K pulled down resistor. FLD: ACT2801C Open-drain Flashlight driver. A internal switch can handle up to 50mA. 25 EP Exposed pad. Must be soldered to ground on the PCB. |
Similar Part No. - ACT2801_14 |
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Similar Description - ACT2801_14 |
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