Datasheet

LT1241 Series
4
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Undervoltage Lockout – Undervoltage Lockout –
Undervoltage Lockout – LT1241 LT1242, LT1244 LT1243, LT1245
Supply Current vs
Oscillator Frequency Oscillator Frequency Oscillator Sink Current
TEMPERATURE (°C)
–50
6
V
CC
(V)
7
8
9
10
11
–25 25 75 125
LT1241 • TPC01
0 50 100
MINIMUM OPERATING VOLTAGE
START-UP THRESHOLD
TEMPERATURE (°C)
–50
9
V
CC
(V)
10
11
16
17
–25 25 75 125
LT1241 • TPC02
0 50 100
MINIMUM OPERATING VOLTAGE
START-UP THRESHOLD
15
TEMPERATURE (°C)
–50
6
V
CC
(V)
7
8
9
10
11
–25 25 75 125
LT1241 • TPC03
0 50 100
MINIMUM OPERATING VOLTAGE
START-UP THRESHOLD
TEMPERATURE (°C)
–50
5
I
CC
(mA)
6
7
8
9
10
–25 25 75 125
LT1241 • TPC06
0 50 100
V
CC
= 15V
R
T
= 10k
C
T
= 3300pF
TEMPERATURE (°C)
–50
0
START-UP CURRENT (µA)
40
80
120
160
200
–25 25 75 125
LT1241 • TPC05
0 50 100
180
140
100
60
20
Start-Up Current Start-Up Current Supply Current
V
CC
(V)
0
0
START-UP CURRENT (µA)
50
100
150
200
2 8 12 18
LT1241 • TPC04
410146 16
LT1241
LT1242/4
LT1243/5
T
J
= 25°C
START-UP
THRESHOLD
OSCILLATOR FREQUENCY (Hz)
10k
0
SUPPLY CURRENT (mA)
2
3
5
7
8
10
100k 1M
LT1241 • TPC18
9
6
4
1
LT1242, LT1243
LT1241, LT1244, LT1245
V
CC
= 15V
R
T
= 10k
C
L
= 15pF
TEMPERATURE (°C)
–50
40
FREQUENCY (kHz)
44
48
52
56
60
–25 25 75 125
LT1241 • TPC07
0 50 100
42
46
50
54
58
V
CC
= 5V
R
T
= 10k
C
T
= 3300pF
TEMPERATURE (°C)
–50
7.7
OSCILLATOR SINK CURRENT (mA)
8.7
–25 25 75 125
LT1241 • TPC08
0 50 100
7.8
8.0
8.2
8.4
8.6
8.5
7.9
8.1
8.3
V
PIN4
= 2V