Datasheet

3
LTC1044A
Operating Voltage Range
vs Temperature
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
AMBIENT TEMPERATURE (°C)
–55

8
10
14
25 75
LTC1044A • TPC01
6
4
–25 0 50 100 125
2
0
12
SUPPLY VOLTAGE (V)
Power Efficiency vs
Oscillator Frequency, V
+
= 5V
OSCILLATOR FREQUENCY (Hz)
100
88
POWER EFFICIENCY (%)
90
92
94
96
1k 10k 100k
LTC1044A • G02
86
84
82
80
98
100
100µF
100µF
10µF
10µF
1µF
1µF
I
L
= 1mA
I
L
= 15mA
T
A
= 25°C
C1 = C2
Output Resistance vs
Oscillator Frequency, V
+
= 5V
OSCILLATOR FREQUENCY (Hz)
100
200
OUTPUT RESISTANCE (Ω)
300
400
1k 10k 100k
LTC1044A • TPC04
100
0
500
T
A
= 25°C
I
L
= 10mA
C1 = C2 = 10µF
C1 = C2 = 1µF
C1 = C2 = 100µF
LOAD CURRENT (mA)
0
0
POWER CONVERSION EFFICIENCY (%)
SUPPLY CURRENT (mA)
10
30
40
50
100
70
2
4
5
LTC1044A • TPC06
20
80
90
P
EFF
I
S
60
0
1
3
4
5
10
7
2
8
9
6
1
3
6
7

T
A
= 25°C
C1 = C2 = 10µF
f
OSC
= 1kHz
Output Resistance vs
Oscillator Frequency, V
+
= 10V
OSCILLATOR FREQUENCY (Hz)
100
200
OUTPUT RESISTANCE (Ω)
300
400
1k 10k 100k
LTC1044A • TPC05
100
0
500
T
A
= 25°C
I
L
= 10mA
C1 = C2 = 1µF
C1 = C2 
= 100µF
C1 = C2 
= 10µF
Power Conversion Efficiency
vs Load Current, V
+
= 2V
Power Conversion Efficiency
vs Load Current, V
+
= 5V
LOAD CURRENT (mA)
0
0
POWER CONVERSION EFFICIENCY (%)
SUPPLY CURRENT (mA)
10
30
40
50
100
70
20
40
50
LTC1044A • TPC07
20
80
90
P
EFF
I
S
60
0
10
30
40
50
100
70
20
80
90
60
10
30
60
70
T
A
= 25°C
C1 = C2 = 10µF
f
OSC
= 5kHz
LOAD CURRENT (mA)
0
0
POWER CONVERSION EFFICIENCY (%)
SUPPLY CURRENT (mA)
10
30
40
50
100
70
40
80
100
LTC1044A • TPC08
20
80
90
P
EFF
I
S
60
0
30
90
120
150
300
210
60
240
270
180
20
60
120
140
T
A
= 25°C
C1 = C2 = 10µF
f
OSC
= 20kHz
Power Conversion Efficiency
vs Load Current, V
+
= 10V
Using the Test Circuit
Power Efficiency vs
Oscillator Frequency, V
+
= 10V
OSCILLATOR FREQUENCY (Hz)
100
POWER EFFICIENCY (%)
1k 10k 100k
LTC1044A • TPC03
T
A
= 25°C
C1 = C2
100µF
I
L
= 1mA
10µF
10µF
1µF 1µF
88
90
92
94
96
86
84
82
80
98
100
100µF
I
L
= 15mA