LTC1923 LINER [Linear Technology], LTC1923 Datasheet - Page 4

• Manufacturer Part Number: LTC1923
• Description: High Efficiency Thermoelectric Cooler Controller
• Manufacturer: LINER [Linear Technology]

LTC1923
ELECTRICAL CHARACTERISTICS
The
V
SYMBOL PARAMETER
TEC Voltage Amplifier
ATEC
TECOFF
TECCMR Common Mode Rejection
V
V
f3dB
Output Drivers
OUTH
OUTL
t
t
t
t
t
t
SLEWVT
DLY
Fault
OPENTH
SHRTTH
FLTV
Direction Comparator
DIRH
DIRL
HCV
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1923E is guaranteed to meet specifications from 0 C to
70 C. Specifications over the –40 C to 85 C operating temperature range
are assured by design, characterization and correlation with statistical
process controls.
4
RISE
FALL
rSLEW
fSLEW
rSLEW
fSLEW
TECH
TECL
DD
= 5V, R
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
Amplifier Gain
Amplifier Offset
Output High Voltage
Output Low Voltage
–3dB Frequency
Output High Voltage
Output Low Voltage
Output Rise Time
Output Fall Time
Output Rise Time
Output Fall Time
Output Rise Time
Output Slew Fall Time
R
Output Dead Time
Open Thermistor Threshold
Shorted Thermistor Threshold
Fault Output Low Voltage
Low-to-High Threshold
High-to-Low Threshold
H/C Output Low Voltage
SLEW
SLEW
Disable Threshold
= V
DD
, SDSYNC = V
DD
, R
T
= 10k, C
CONDITIONS
Measured at V
0.1V < V
I
I
(Note 3)
I
I
C
C
C
C
C
C
R
V
V
1mA Into FAULT, During Fault
TEC
Sensed When H/C Toggles Low
TEC
Sensed When H/C Toggles High
1mA Into Pin
LOAD
LOAD
OUT
OUT
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
SET
SET
T
T
= 10k
= 330pF unless otherwise noted.
–
–
= – 100mA
= 100mA
= 5V, Measured with Respect to V
= 5V, Measured with Respect to GND
= 2.5V, Measured with Respect to TEC
= 2.5V, Measured with Respect to TEC
= –50 A
= 50 A
= 1nF
= 1nF
= 1nF, R
= 1nF, R
= 1nF, R
= 1nF, R
CM
< 4.9V
TEC
SLEW
SLEW
SLEW
SLEW
, V
CM
= 10k
= 10k
= 100k
= 100k
Note 3: Guaranteed by design, not tested in production.
= 2.5V
SET
–
–
0.98
MIN
4.7
4
0.975
– 410
2.75
TYP
– 50
150
150
4.9
0.1
4.5
0.7
– 7
20
20
20
20
90
90
90
60
50
1
1
A
= 25 C.
MAX
1.02
300
300
0.3
1.2
UNITS
MHz
1923f
V/V
mV
mV
mV
mV
mV
mV
dB
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V