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LTC1923 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC1923
Description  High Efficiency Thermoelectric Cooler Controller
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1923 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC1923
1923f
TEMPERATURE (
°C)
–50
165
185
205
225
265
–20
10
40
70
1923 G01
100
130
245
CT = 330pF
RT = 10k
RT (kΩ)
5
0
200
600
800
1000
15
1800
1923 G02
400
10
20
1200
1400
1600
CT = 68pF
CT = 150pF
CT = 330pF
VDD = 2.7V, 5V
TA = 25°C
TEMPERATURE (
°C)
2.495
2.500
1923 G03
2.490
2.485
2.510
2.505
–50
–20
10
40
70
100
130
TYPICAL PERFOR A CE CHARACTERISTICS
VREF vs IREF for Different
Temperatures
Output Dead Time vs RT
Error Amplifier Offset Voltage
vs Temperature
Open Thermistor Threshold
vs Temperature
Output Rise/Fall Time vs RSLEW
Shorted Thermistor Threshold
vs Temperature
IREF (mA)
0
10
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
2.475
2.470
1923 G04
515
TA = 125°C
TA = 25°C
TA = –50°C
RT (kΩ)
5
125
15
1923 G05
100
75
25
7.5
10
12.5
50
150
VDD = 2.7V
VDD = 5V
TA = 25°C
0
100
150
1923 G06
50
0
100
200
300
250
200
RSLEW (kΩ)
TA = 25°C
TEMPERATURE (
°C)
–50
–1.0
–0.5
0
0.5
1.0
1.5
–20
10
40
70
1923 G07
100
130
TEMPERATURE (
°C)
–50
4.55
4.56
4.57
4.58
4.59
4.60
–20
10
40
70
1923 G08
100
130
VSET = 5V
TEMPERATURE (
°C)
–50
0.95
0.96
0.97
0.98
0.99
1.00
–20
10
40
70
1923 G09
100
130
VSET = 5V
Oscillator Frequency
vs Temperature
Oscillator Frequency vs RT
VREF vs Temperature


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