LTC1046 Linear Technology, LTC1046 Datasheet - Page 3

• Manufacturer Part Number: LTC1046
• Description: Inductorless 5V to + 5V Converter
• Manufacturer: Linear Technology

TYPICAL PERFOR
–0.5
–1.0
–1.5
–2.0
–2.5
500
400
300
200
100
100
2.5
2.0
1.5
1.0
0.5
0.0
90
80
70
60
50
40
30
20
10
0
0
100
0
Output Resistance vs
Oscillator Frequency
Power Conversion Efficiency vs
Load Current for V
0
Output Voltage vs Load Current
for V
T
V
f
C1 = C2 = 10 F
OSC
A
+
1
= 25 C
= 2V
2
C1 = C2
= 100 F
OSCILLATOR FREQUENCY, f
= 8kHz
+
= 2V
2
4
LOAD CURRENT, I
LOAD CURRENT, I
3
6
1k
4
8
C1 = C2
= 10 F
SLOPE = 52
10 12 14 16 18 20
5
+
I
P
S
= 2V
EFF
6
L
L
10k
T
V
C1 = C2 = 10 F
f
(mA)
(mA)
OSC
A
+
7
C1 = C2
= 1 F
OSC
= 25 C
= 2V
W
T
V
I
= 8kHz
L
A
+
8
(Hz)
= 10mA
= 25 C
= 5V
A
1046 G01
1046 G04
1046 G07
9
U
100k
10
CE
10
9
8
7
6
5
4
3
2
1
0
C
1000
100
HARA TERISTICS
100
90
80
70
60
50
40
30
20
10
10
–1
–2
–3
–4
–5
0
5
4
3
2
1
0
0
Power Conversion Efficiency vs
Load Current for V
0
0
Output Resistance vs
Supply Voltage
Output Voltage vs Load Current
for V
T
V
f
C1 = C2 = 10 F
T
I
OSC
L
A
A
+
= 3mA
10 20 30 40
= 25 C
= 5V
= 25 C
10
1
C
= 30kHz
+
OSC
= 5V
C
SUPPLY VOLTAGE, V
LOAD CURRENT, I
LOAD CURRENT, I
20
= 0pF
2
C
OSC
30
3
= 100pF
P
EFF
SLOPE = 27
50 60 70 80 90 100
I
+
S
40
4
= 5V
L
T
V
C1 = C2 = 10 F
f
L
OSC
A
(mA)
+
(mA)
+
50
= 25 C
= 5V
5
(V)
= 30kHz
60
(Using Test Circuit in Figure 1)
6
1046 G05
1046 G02
1046 G08
70
7
100
90
80
70
60
50
40
30
20
10
0
100
100
0.1
80
70
60
50
40
30
20
10
98
96
94
92
90
88
86
84
82
80
10
1
EXTERNAL CAPACITOR (PIN 7 TO GND), C
–55
100
1
Output Resistance vs
Temperature
Power Conversion Efficiency vs
Oscillator Frequency
Oscillator Frequency as a
Function of C
C1 = C2 = 10 F
V
–25
A
OSCILLATOR FREQUENCY, f
+
= 2V, C
AMBIENT TEMPERATURE ( C)
C
10
1k
0
B
OSC
V
OSC
+
25
PIN 1 = OPEN
E
= 0pF
= 5V, C
D
100
10k
50
LTC1046
OSC
A = 100 F, 1mA
B = 100 F, 15mA
C = 10 F, 1mA
D = 10 F, 15mA
E = 1 F, 1mA
F = 1 F, 15mA
PIN 1 = V
= 0pF
75
100k
1000
OSC
F
V
T
C1 = C2
V
T
A
(Hz)
A
+
+
+
100
= 25 C
= 25 C
= 5V
= 5V
OSC
1046 G09
1046 G03
1046 G06
3
10000
(pF)
125
1M