MAX1605 Maxim, MAX1605 Datasheet - Page 4

• Manufacturer Part Number: MAX1605
• Description: 30V Internal Switch LCD Bias Supply
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
30V Internal Switch LCD Bias Supply
Note 1: All devices are 100% tested at T
Note 2: The MAX1605 requires a supply voltage between +2.4V and +5.5V; however, the input voltage used to power the inductor
(V
4
LIM Input Low Level
LIM Input Float Level
LIM Input High Level
LIM Input Bias Current
CC
CC
18.2
18.1
18.0
17.9
17.8
17.7
17.6
_______________________________________________________________________________________
= SHDN = 3.3V, T
= 3.3V, V
80
78
76
74
72
70
2.0
2.0
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
can vary from +0.8V to V
PARAMETER
V
LIM = V
(500mA)
EFFICIENCY vs. SUPPLY VOLTAGE
IN
2.5
2.5
= 3.6V
IN
CC
I
OUT
3.0
= 3.6V, L1 = 10µH, SHDN = LIM = V
3.0
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
= 5mA
(L1 = 10µH)
3.5
3.5
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
4.0
4.0
I
4.5
I
OUT
4.5
I
V
I
OUT
I
OUT
OUT
LIM
IN
80
OUT
= 10mA
= 3.6V
= 5mA
= 500mA
= 1mA
= 1mA
5.0
5.0
SYMBOL
.
I
LIM
5.5
5.5
A
= +25°C. All limits over the temperature range are guaranteed by design.
21.5
21.3
21.1
20.9
20.7
20.5
20.3
20.1
19.9
19.7
19.5
2.4V ≤ V
2.4V ≤ V
I
2.4V ≤ V
SHDN = V
SHDN = GND
LIM
90
80
70
60
50
40
30
0
0
= ±0.5µA
OUTPUT VOLTAGE vs. INPUT VOLTAGE
CC
EFFICIENCY vs. INPUT VOLTAGE
, V
I
CC
CC
CC
OUT
CC
OUT(NOM)
= 5mA
≤ 5.5V
≤ 5.5V,
≤ 5.5V
3
3
, LIM = GND or V
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
CONDITIONS
(L1 = 10µH)
6
= 18V (Figure 3), T
6
I
OUT
Typical Operating Characteristics
= 1mA
I
OUT
I
OUT
V
I
= 5mA
LIM
CC
V
LIM = V
(500mA)
9
9
= 1mA
CC
= 500mA
CC
= 3.3V
= 3.3V
CC
12
12
A
= +25°C, unless otherwise noted.)
18.4
18.3
18.2
18.1
18.0
17.9
17.8
17.7
17.6
17.5
17.4
80
78
76
74
72
70
68
66
64
62
60
(V
- 0.25V
0
- 0.4V
0
CC
MIN
V
LIM = GND
(125mA)
-2
CC
EFFICIENCY vs. LOAD CURRENT
/ 2)
5
5
vs. LOAD CURRENT
LIM = OPEN
(250mA)
OUTPUT VOLTAGE
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LIM = OPEN
(L1 = 10µH)
10
10
(250mA)
LIM = GND
(125mA)
LIM = V
(500mA)
(V
+ 0.25V
15
15
MAX
CC
0.4
2
1
CC
/ 2)
LIM = V
(500mA)
20
20
UNITS
CC
µA
V
V
V
25
25