SC810EVB datasheet(8/20 Pages) SEMTECH

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SC810

Pin Descriptions

Pin #

Pin Name

Pin Function

VIN

Supply pin

— connect to charging adapter (wall adapter or USB). This is a high voltage (30V) pin.

2STATB

Status output pin

— This open-drain pin is asserted (pulled low) when a valid charging supply is connected to

VIN, and a charging cycle begins. It is released when the termination current is reached, indicating that charging is

complete. STATB is not asserted for re-charge cycles.

GND

Ground

IPRGM

Fast-charge and pre-charge current programming pin

— Fast-charge current is programmed by connecting

a resistor from this pin to ground. Pre-charge current is 20% of fast-charge current. The charging termination

threshold current is 10% of the IPRGM programmed fast-charge current.

5BAT

Charger output

— connect to battery positive terminal.

ENB

Combined device enable/disable — Logic high disables the device. Connect to GND to enable charging with

indefinite float-charging. Float this pin to enable charging without float-charge upon termination. Note that this

pin must be grounded if the SC810 is to be operated without a battery connected to BAT.

Thermal Pad

Pad is for heat sinking purposes

— not connected internally. Connect exposed pad to ground plane using mul-

tiple vias.

SC810EVB Arkusz danych(PDF) 8 Page - Semtech Corporation