EUP8054/8054X
Pin Functions
(continue)
PROG:
Charge Current Program, Charge Current Monitor and Shutdown Pin. The charge current is programmed
by connecting a 1% resistor, R
PROG
, to ground. When charging in constant-current mode, this pin servos to 1V. In
all modes, the voltage on this pin can be used to measure the charge current using the following formula:
I BAT
=
VPROG / R PROG
•
1000
(
)
The PROG pin can also be used to shutdown the charger. Disconnecting the program resistor from ground
allows a 3µA current to pull the PROG pin high. When it reaches the 1.94V shutdown threshold voltage, the
charger enters shutdown mode, charging stops and the input supply current drops to 25µA. This pin is also
clamped to approximately 2.4V. Driving this pin to voltages beyond the clamp voltage will draw currents as high
as1.5mA. Reconnecting R
PROG
to ground will return the charger to normal operation.
N/C:
No connection.
Ordering Information
Order Number
Package Type
Marking
Operating Temperature range
EUP8054OIR1
EUP8054XOIR1
EUP8054RIR1
TSOT-25
TSOT-25
TDFN-6
UNxx
UXxx
xxxx
8054N
-20 °C to 70°C
-20 °C to 70°C
-20 °C to 70°C
EUP8054/X
□ □ □
□
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape& Reel
Operating temperature range
I: Industry Standard
Package Type
O: TSOT
R:TDFN
DS8054
Ver1.1
Jan. 2007
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
