Datasheet

LTC15 4 0
4
1540fb
For more information www.linear.com/LTC1540
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 3V, V
–
= GND = 0V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply
V
+
Supply Voltage Range
l
2 11 V
I
CC
Supply Current IN
–
– IN
+
= 80mV, HYST = REF, C-Grade
IN
–
– IN
+
= 80mV, HYST = REF, I-Grade
l
l
0.28 0.61
0.64
µA
µA
Comparator
V
OS
Comparator Input Offset Voltage V
CM
= 2.5V
LTC1540CMS8/IMS8
l
l
±12
±15
±16
mV
mV
mV
I
IN
Input Leakage Current (IN
+
, IN
–
)
Input Leakage Current (HYST)
V
IN
+
= V
IN
–
= 1.5V
l
l
±0.01
±0.02
±1
±1
nA
nA
V
CM
Comparator Input Common Mode
Range
l
V
–
V
+
– 1.3V V
CMRR Common Mode Rejection Ratio V
–
to V
+
– 1.3V 0.1 1 mV/V
PSRR Power Supply Rejection Ratio V
+
= 2V to 11V 0.1 1 mV/V
V
HYST
Hysteresis Input Voltage Range
l
REF – 50mV REF V
t
PD
Propagation Delay C
OUT
= 100pF Overdrive = 10mV
Overdrive = 100mV
70
60
µs
µs
V
OH
Output High Voltage I
O
= –8mA
l
V
+
– 0.4V V
V
OL
Output Low Voltage I
O
= 0.8mA
l
GND + 0.4V V
Reference
V
REF
Reference Voltage No Load (SO-8)/(DFN) Commercial
MS8 Commercial
(SO-8)/(MS8)/(DFN) Industrial
l
l
l
1.158
1.156
1.152
1.182
1.182
1.182
1.206
1.208
1.212
V
V
V
∆V
REF
Load Regulation 0 ≤ I
SOURCE
≤ 100µA
l
0.75 3.5 mV
0 ≤ I
SINK
≤ 10µA
l
0.5 1.5
5
mV
mV
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:
The θ
JA
specified for the DD package is with minimal PCB heat
spreading metal. Using expanded metal area on all layers of a board
reduces this value.
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