Datasheet

4
LTC1044A
Output Resistance
vs Supply Voltage
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Output Voltage
vs Load Current, V
+
= 5V
Output Voltage
vs Load Current, V
+
= 2V
SUPPLY VOLTAGE (V)
1
OUTPUT RESISTANCE (Ω)
3
1000
LTC1044A • TPC09
10
100
2101112
9
876
5
4
0
T
A
= 25°C
I
L
= 3mA
C
OSC
= 100pF
C
OSC
= 0pF
LOAD CURRENT (mA)
0
OUTPUT VOLTAGE (V)
0.5
1.5
2.5
8
LTC1044A • TPC10
–0.5
–1.5
0
1.0
2.0
–1.0
–2.0
–2.5
2
4
6
10
7
1
3
5
9
T
A
= 25°C
f
OSC
= 1kHz
SLOPE = 250Ω
LOAD CURRENT (mA)
0
OUTPUT VOLTAGE (V)
1
3
5
80
LTC1044A • TPC11
–1
–3
0
2
4
–2
–4
–5
20
40
60
100
70
10
30
50
90
T
A
= 25°C
f
OSC
= 5kHz
SLOPE = 80Ω
Output Voltage
vs Load Current, V
+
= 10V
Oscillator Frequency as a
Function of C
OSC
, V
+
= 5V
Output Resistance
vs Temperature
LOAD CURRENT (mA)
0
OUTPUT VOLTAGE (V)
2
6
10
40
LTC1044A • TPC12
–2
–6
0
4
8
–4
–8
–10
10
20
30
50 60 70 80 90 100
T
A
= 25°C
f
OSC
= 20kHz
SLOPE = 45Ω
AMBIENT TEMPERATURE (°C)
–55
0
OUTPUT RESISTANCE (Ω)
40
120
160
200
400
280
0
50
75
LTC1044A • TPC13
80
320
360
240
–25
25
100
125
V
+
= 2V, f
OSC
= 1kHz
C1 = C2 = 10µF
V
+
= 5V, f
OSC
= 5kHz
V
+
= 10V, f
OSC
= 20kHz
EXTERNAL CAPACITOR (PIN 7 TO GND)(pF)
1 10
10
OSCILLATOR FREQUENCY (Hz)
1k
100k
100 1000 10000
LTC1044A • TPC14
100
10k
T
A
= 25°C
PIN 1 = V
+
PIN 1 = OPEN
Oscillator Frequency as a
Function of C
OSC
, V
+
= 10V
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs Supply Voltage
EXTERNAL CAPACITOR (PIN 7 TO GND)(pF)
1 10
10
OSCILLATOR FREQUENCY (Hz)
1k
100k
100 1000 10000
LTC1044A • TPC15
100
10k
V
+
= 10V
T
A
= 25°C
PIN 1 = V
+
PIN 1 = OPEN
SUPPLY VOLTAGE (V)
0123
OSCILLATOR FREQUENCY (Hz)
1k
10k
100k
456789101112
LTC1044A • G16
0.1k
T
A
= 25°C
C
OSC
= 0pF
AMBIENT TEMPERATURE (°C)
–55

20
25
35
25 75
LTC1044A • TPC17
15
10
–25 0
50 100 125
5
0
30
OSCILLATOR FREQUENCY (kHz)
V
+
= 10V
V
+
= 5V
C
OSC
= 0pF
Using the Test Circuit