MAX1880EUG Maxim Integrated Products, MAX1880EUG Datasheet - Page 9

• Manufacturer Part Number: MAX1880EUG
• Description: DC/DC Switching Converters
• Manufacturer: Maxim Integrated Products

Specifications of MAX1880EUG

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
BUF+ = FLTSET = TGND = PGND = GND, T
8.12
8.08
8.04
8.00
7.96
7.92
7.88
100
100
90
80
70
60
50
40
30
90
80
70
60
50
40
0
0
0
POSITIVE CHARGE-PUMP EFFICIENCY
V
IN
MAIN 12V OUTPUT EFFICIENCY
V
V
100
MAIN 8V OUTPUT VOLTAGE
= 3.3V
IN
SUPP
= 3.3V
200
5
vs. LOAD CURRENT
vs. LOAD CURRENT
vs. LOAD CURRENT
= 7V
200
V
I
IN
I
I
_______________________________________________________________________________________
OUT
NEG
OUT
400
= 5V
300
10
(mA)
(mA)
(mA)
IN
C
R
C
COMP
COMP
V
400
FIGURE 8
V
C
INTG
V
= +3.3V, SHDN = IN, V
IN
V
OUT
INTG
V
V
SUPP
SUPP
600
SUPP
POS
= 5V
15
= 470pF
= 24kΩ
= 470pF
= 12V
= 470pF
500
= 7.5V
= 20V
= 10V
= 8V
800
600
20
A
= +25°C.)
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
100
40
35
30
25
20
15
10
90
80
70
60
50
40
5
SWITCHING FREQUENCY vs. INPUT VOLTAGE
2.5
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
2
0
Quad-Output TFT LCD DC-DC
MAXIMUM POSITIVE CHARGE-PUMP
V
R
C
C
MAX1778
OUT
COMP
COMP
INTG
V
MAIN 8V OUTPUT EFFICIENCY
MAIN
3.0
IN
4
= 8V
= 470pF
= 3.3V
STEP UP CONVERTERS
200
= 24kΩ
= 470pF
vs. LOAD CURRENT
I
3.5
POS
6
= V
I
V
OUT
= 1mA
V
SUPP
V
SUPP
IN
400
IN
4.0
8
(mA)
(V)
= 5V
Converters with Buffer
(V)
I
POS
Typical Operating Characteristics
4.5
10
= V
= 10mA
600
SUPN
5.0
12
800
5.5
14
= V
SUPB
-4.90
-4.92
-4.94
-4.96
-4.98
-5.00
-5.02
-5.04
12.24
12.16
12.08
12.00
11.92
11.84
11.76
20.2
20.0
19.8
19.6
19.4
19.2
= V
NEGATIVE CHARGE-PUMP OUTPUT VOLTAGE
POSITIVE CHARGE-PUMP OUTPUT VOLTAGE
0
0
0
SUPL
V
V
IN
SUPN
100
MAIN 12V OUTPUT VOLTAGE
= 3.3V
10
= 8V, BUF- = BUFOUT,
5
vs. LOAD CURRENT
= 6V
vs. LOAD CURRENT
vs. LOAD CURRENT
200
I
I
I
NEG
OUT
POS
300
20
V
V
10
(mA)
(mA)
(mA)
SUPP
IN
V
= 5V
SUPN
V
400
= 7V
V
FIGURE 8
C
SUPP
V
SUPN
V
INTG
SUPP
SUPP
30
= 7V
15
= 8V
= 470pF
= 8V
500
= 7.5V
= 10V
600
40
20
9