Datasheet

LTC2950-1/LTC2950-2
14
295012fd
the PB board trace, however, will affect the open circuit
voltage on the PB pin. If the leakage is too large (>2µA),
the PB voltage may fall close to the threshold window. To
mitigate the effect of the board leakage, a 10k resistor to
V
IN
is recommended (see Figure 9).
PB
V
IN
LTC2950-1/
LTC2950-2
GND
EXTERNAL BOARD
LEAKAGE CURRENT
100k
2.4V
R7
10k
2950 F09
>2µA
PINS OMITTED
FOR CLARITY
IF EXTERNAL PARASITIC BOARD
LEAKAGE >2µA, USE EXTERNAL
PULL-UP RESISTOR
V
IN
Figure 9. External Pull-Up Resistor on PB Pin
Reverse Battery Protection
To protect the LTC2950 from a reverse battery connection,
place a 1k resistor in series with the V
IN
pin (see Figure 10).
Typical applicaTions