MAX1673 Maxim, MAX1673 Datasheet - Page 4

• Manufacturer Part Number: MAX1673
• Description: Regulated / 125mA-Output / Charge-Pump DC-DC Inverter
• Manufacturer: Maxim

Regulated, 125mA-Output,
Charge-Pump DC-DC Inverter
(Circuit of Figure 1, V
4
140
120
100
100
_______________________________________________________________________________________
80
60
40
20
90
80
70
60
50
40
30
20
10
12
10
0
0
8
6
4
2
0
0
0
2
CIRCUIT OF FIGURE 4
V
C
REF
FLY
EFFICIENCY vs. LOAD CURRENT
vs. LOAD CURRENT (LIN MODE)
DROPOUT OUTPUT RESISTANCE
20
25
=
V
C
IN
10
OUT
3
40
vs. INPUT VOLTAGE
T
LOAD CURRENT (mA)
LOAD CURRENT (mA)
OUTPUT RIPPLE
A
50
(SKIP MODE)
= +25°C
IN
60
V
IN
= +5V, C
75
V
C
4
IN
OUT
(V)
80
= 3.5V
T
T
A
= 10 F
A
= -40°C
100
C
= +85°C
100
OUT
V
C
V
IN
OUT
IN
FLY
5
= 4V
= 22 F
= 5V
125
= 47 F
120
= 2.2µF, C
150
140
6
OUT
250
200
150
100
90
80
70
60
50
40
30
20
10
50
12
10
0
0
8
6
4
2
0
QUIESCENT CURRENT vs. INPUT VOLTAGE
= 22µF, T
0
0
2
DOES NOT INCLUDE BIAS CURRENT
FOR RESISTOR DIVIDER
C
C
C
OUT
OUT
OUT
vs. LOAD CURRENT (SKIP MODE)
EFFICIENCY vs. LOAD CURRENT
20
25
= 10 F
= 22 F
= 47 F
3
A
40
LOAD CURRENT (mA)
OUTPUT RIPPLE
LOAD CURRENT (mA)
50
= +25°C, unless otherwise noted.)
(LIN MODE)
(LIN MODE)
V
60
IN
V
IN
= 4V
75
4
(V)
V
CIRCUIT OF FIGURE 4
V
CIRCUIT OF FIGURE 4
80
REF
Typical Operating Characteristics
REF
100
V
100
V
IN
C
IN
FLY
5
V
IN
V
125
IN
=
120
= 4.5V
C
= 5V
OUT
10
140
150
6
-3.08
-3.07
-3.06
-3.05
-3.04
-3.03
-3.02
-3.01
-3.00
-2.99
-2.98
45
40
35
30
25
20
15
10
90
80
70
60
50
40
30
5
0
QUIESCENT CURRENT vs. INPUT VOLTAGE
3.5
2
0
100mA LOAD
V
CIRCUIT OF FIGURE 4
DOES NOT INCLUDE BIAS CURRENT
FOR RESISTOR DIVIDER
V
OUT
REF
EFFICIENCY vs. INPUT VOLTAGE
= -3V
25
4.0
V
IN
3
vs. LOAD CURRENT
OUTPUT VOLTAGE
LOAD CURRENT (mA)
50
(SKIP MODE)
4.5
V
V
IN
IN
75
4
(V)
(V)
5.0
LIN MODE
100
SKIP MODE
SKIP MODE
5
LIN MODE
5.5
125
6.0
150
6