LTC2956
4
2956fa
For more information www.linear.com/LTC2956
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Pins: EN/EN, PBOUT, ONALERT, OFFALERT, PERIOD, RANGE, LONG
V
EN(VOH)
EN Voltage Output High (LTC2956-1) I = 0µA, –1µA
l
1.5 V
V
EN(VOH)
EN Voltage Output High (LTC2956-2) I = 0µA, –1µA
l
V
IN
– 1.5 V
IN
V
R
EN/EN
EN/EN Pull-Up Resistance
l
0.45 0.9 1.35 MΩ
V
OL
Output Low Voltage (EN/EN)
Output Low Voltage (ONALERT, PBOUT)
Output Low Voltage (OFFALERT)
I = 1mA
I = 3mA
I = 6mA
l
l
l
0.4
0.4
0.4
V
V
V
I
OH
Input Leakage Current (RANGE, LONG)
Leakage Current (PBOUT, ONALERT, OFFALERT)
V = 1.5V
V = 5V
l
l
±100
±100
nA
nA
V
PERIOD
PERIOD Open Circuit Voltage I = –1µA
l
0.3 0.4 0.5 V
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.3V, R
COM
= 100k unless otherwise noted. (Note 2)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative; all voltages are referenced to GND unless otherwise
noted.
Note 3: A substrate diode limits the V
IN
pin to a minimum of –0.3V with
respect to GND. This pin may go below –0.3V with current limited to less
than 50mA.
Timing Diagram
PB
PBOUT
SLEEP
t
PBOUT_FIRST
DB
EN
ONALERT
t
PERIOD
t
OFF
t
LONG
t
PD(SLEEP)
t
PD(SLEEP)
t
AWAKE_MIN
t
SLEEP_MIN
t
SLEEP_MIN
t
ONMAX
DB
