LP3918 Datasheet, PDF (13/39 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit

LP3918
www.ti.com
SNVS476D – AUGUST 2007 – REVISED MAY 2013
Serial Interface
Unless otherwise noted, V_IN ( = VIN1 = VIN2 = BATT) = 3.6V, GND = 0V, C_VIN1-2=10µF, C_LDOX=1µF, and V_LDO2 (DIG) = 3.0V.
Typical values and limits appearing in normal type apply for T_J = 25°C. Limits appearing in boldface type apply over the
entire junction temperature range for operation, T_a = T_J = −40°C to +125°C. ⁽¹⁾⁽²⁾
Symbol
Parameter
Condition
Limit
Typ
Units
Min
Max
f_CLK
Clock Frequency
t_BF
Bus-Free Time between
START and STOP
400
kHz
1.3
µs
t_HOLD
Hold Time Repeated START
Condition
0.6
µs
t_CLK-LP
t_CLK-HP
t_SU
CLK Low Period
CLK High Period
Set-Up Time Repeated
START Condition
1.3
µs
0.6
µs
0.6
µs
t_DATA-HOLD
t_DATA-SU
t_SU
Data Hold Time
Data Set-Up Time
Set-Up Time for STOP
Condition
50
ns
100
ns
0.6
µs
t_TRANS
Maximum Pulse Width of
50
ns
Spikes that Must be
Suppressed by the Input
Filter of both DATA & CLK
Signals
(1) All electrical characteristics having room-temperature limits are tested during production with T_J = 25°C. All hot and cold limits are
speficied by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
(2) Specified by design. Not production tested.
Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LP3918
Submit Documentation Feedback
13