Datasheet

2
LTC1325
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
V
DD
Supply Voltage ● 4.5 16 V
I
DD
V
DD
Supply Current All TTL Inputs = 0V or 5V, No Load on REG ● 1200 2000 µA
I
PD
V
DD
Supply Current Power-Down Mode, All TTL Inputs = 0V or 5V ● 30 50 µA
V
REG
Regulator Output Voltage No Load ● 3.047 3.072 3.097 V
LD
REG
Regulator Load Regulation Sourcing Only, I
REG
= 0mA to 2mA –1 –5 mV/mA
LI
REG
Regulator Line Regulation No Load, V
DD
= 4.5V to 16V –60 –100 µV/V
TC
REG
Regulator Output Tempco No Load, 0°C < T
A
< 70°C 50 ppm/°C
V
DAC
DAC Output Voltage VR1 = 1, VR0 = 1, 100% Duty Ratio, I
CHRG
= I (Note 7) 140 160 180 mV
VR1 = 1, VR0 = 0, 100% Duty Ratio, I
CHRG
= I/3 48 55 62 mV
VR1 = 0, VR0 = 1, 100% Duty Ratio, I
CHRG
= I/5 30 34 38 mV
VR1 = 0, VR0 = 0, 100% Duty Ratio, I
CHRG
= I/10 16 18 21 mV
V
HYST
Fault Comparator Hysteresis V
HTF
= 1V, V
EDV
= 0.9V, V
BATR
= 100mV ±20 mV
V
MCV
= V
LTF
= 2V ±10 mV
V
OS
Fault Comparator Offset V
HTF
= 1V, V
EDV
= 0.9V, V
BATR
= 100mV ±50 mV
V
MCV
= V
LTF
= 2V
V
BATR
V
BAT
for BATR = 1 100 mV
V
BATP
V
BAT
for BATP = 1 ● V
DD
– 1.8 V
V
EDV
Internal EDV Voltage ● 860 900 945 mV
V
LTF
, V
MCV
LTF, MCV Voltage Range 1.6 2.8 V
V
HTF
HTF Voltage Range 0.5 1.3 V
A
GG
Gas Gauge Gain –0.4V < V
SENSE
< 0V –4
V
OS(GG)
Gas Gauge Offset –0.4V < V
SENSE
< 0V (Note 6) ±1 LSB
R
F
Internal Filter Resistor 1000 Ω
TOL
BATD
Battery Divider Tolerance All Division Ratios ● –2 2 %
V
IL
Input Low Voltage CLK, CS, D
IN
● 0.8 1.3 V
V
IH
Input High Voltage CLK, CS, D
IN
● 1.7 2.4 V
I
IL
Low Level Input Current V
CLK
, V
CS
or V
DIN
= 0V ● –2.5 2.5 µA
I
IH
High Level Input Current V
CLK
, V
CS
or V
DIN
= 5V ● –2.5 2.5 µA
ELECTRICAL CHARACTERISTICS
ORDER PART
NUMBER
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
Consult factory for Industrial and Military grade parts.
V
DD
= 12V ±5%, T
A
= 25°C, unless otherwise noted.
(Notes 1, 2)
V
DD
to GND............................................................. 17V
All Other Pins................................ –0.3V to V
DD
+ 0.3V
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
1
2
3
4
5
6
7
8
9
TOP VIEW
N PACKAGE
18-LEAD PDIP
18
17
16
15
14
13
12
11
10
REG
D
OUT

D
IN

CS
CLK
LTF
MCV
HTF
GND
V
DD
PGATE
DIS
V
BAT

T
BAT
T
AMB

V
IN
SENSE
FILTER
SW PACKAGE
18-LEAD PLASTIC SO WIDE
T
JMAX
= 125°C, θ
JA
= 75°C/ W (N)
T
JMAX
= 125°C, θ
JA
= 100°C/ W (SW)
LTC1325CN
LTC1325CSW