ACT8810 datasheet(6/54 Pages) ACTIVE-SEMI

6 / 54 page

ACT8810

Rev 9, 15-Nov-12

Innovative Power

- 6 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

2CTM is a trademark of NXP.

PIN DESCRIPTIONS CONT’D

NAME

DESCRIPTION

OUT3

Output Feedback Sense for REG3. Connect this pin directly to the output node to connect the

internal feedback network to the output voltage.

GP3

Power Ground for REG3. Connect GA, GP1, GP2, and GP3 together at a single point as close to

the IC as possible.

SW3

Switching Node Output for REG3. Connect this pin to the switching end of the inductor.

VP3

Power Input for REG3. Bypass to GP3 with a high quality ceramic capacitor placed as close as

possible to the IC.

OUT6

RTC LDO Output Voltage. Capable of delivering up to 30mA of output current.

OUT5

Output Voltage for REG5. Capable of delivering up to 360mA of output current. The output is

discharged to GA with 1kΩ when disabled.

INL

Power Input for REG4, REG5, and REG6. Bypass to GA with a high quality ceramic capacitor

placed as close as possible to the IC.

OUT4

Output Voltage for REG4. Capable of delivering up to 360mA of output current. The output is

discharged to GA with 1kΩ when disabled.

nSTAT0

Active-Low Open-Drain Charger Status Output. nSTAT0 has a 5mA (typ) current limit, allowing it to

directly drive an indicator LED without additional external components. To generate a logic-level

output, connect nSTAT0 to an appropriate supply voltage (typically VSYS) through a 10kΩ or

greater pull-up resistor. See the Charge Status Indication section for more information.

ON2

Independent Enable Control Input for REG2. Drive ON2 to a logic high for normal operation, drive to

GA or a logic low to disable REG2. Do not leave ON2 floating.

Analog Ground. Connect GA directly to a quiet ground node. Connect GA, GP1, GP2, and GP3

together at a single point as close to the IC as possible.

REFBP

Reference Noise Bypass. Connect a 0.01μF ceramic capacitor from REFBP to GA. This pin is

discharged to GA in shutdown.

nRSTO

Open-Drain Reset Output. nRSTO asserts low whenever REG1 is out of regulation, and remains low

for 260ms (typ) after REG1 reaches regulation.

nIRQ

Open-Drain Interrupt Output. nIRQ asserts any time nPBIN is asserted or an unmasked fault

condition exists. See the nIRQ Output section for more information.

CHGLEV

Charging State Select Input.

When ACIN = 0 charge current is internally set; Drive CHGLEV to a logic-high for high-current USB

charging mode (maximum charge current is 500mA), drive CHGLEV to a logic-low for low-current

USB charging mode (maximum charge current is 100mA).

When ACIN = 1 charge current is externally set by RISET; Drive CHGLEV to a logic-high to for high-

current charging mode (ISET (mA) = KISET × 1V/(RISET (kΩ) +0.031) where KISET = 628), drive

CHGLEV to a logic-low for low-current charging mode (ISET (mA) = KISET × 1V/(RISET (kΩ) + 0.031)

where KISET = 314). Do not leave CHGLEV floating.

Exposed Pad. Must be soldered to ground on the PCB.

nPBIN

Master Enable Input. Drive nPBIN to GA through a 100kΩ resistor to enable the IC, drive nPBIN

directly to GA to assert a Hard-Reset condition. Refer to the System Startup & Shutdown and

Control Sequence

sections for more information. nPBIN is internally pulled up to VSYS through a

50kΩ resistor.

nSTAT1

Active-Low Open-Drain Charger Status Output. nSTAT1 has a 5mA (typ) current limit, allowing it to

directly drive an indicator LED without additional external components. To generate a logic-level

output, connect nSTAT1 to an appropriate supply voltage (typically VSYS) through a 10kΩ or

greater pull-up resistor. See the Charge Status Indication section for more information.

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