Typical operating characteristics, Electrical characteristics (continued) – Rainbow Electronics MAX758A User Manual
Page 4
70
72
76
74
78
80
2.0
3.0
2.5
3.5
4.0
4.5
5.0
5.5
MAX1605 toc04
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
EFFICIENCY vs.
SUPPLY VOLTAGE
(L1 = 10
µH)
80
V
IN
= 3.6V
I
LIM
= 500mA
I
OUT
= 5mA
I
OUT
= 1mA
I
OUT
= 10mA
30
50
40
70
60
80
90
0
6
3
9
12
EFFICIENCY vs.
INPUT VOLTAGE (L1 = 10
µH)
MAX1605 toc05
INPUT VOLTAGE (V)
EFFICIENCY (%)
V
CC
= 3.3V
I
LIM
= 500mA
I
OUT
= 5mA
I
OUT
= 1mA
74
76
78
80
82
84
86
88
90
0
5
10
15
20
25
EFFICIENCY vs. LOAD CURRENT
(L1 = 10µH)
MAX1605 toc06
LOAD CURRENT (mA)
EFFICIENCY (%)
LIM = GND
(125mA)
LIM = OPEN
(250mA)
LIM = V
CC
(500mA)
17.6
17.8
17.7
18.0
17.9
18.1
18.2
2.0
3.5
4.0
2.5
3.0
4.5
5.0
5.5
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
MAX1605 toc01
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
V
IN
= 3.6V
LIM = V
CC
(500mA)
I
OUT
= 5mA
I
OUT
= 1mA
19.5
20.1
19.9
19.7
20.3
20.5
20.7
20.9
21.1
21.3
21.5
0
3
6
9
12
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1605 toc02
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
V
CC
= 3.3V
LIM = V
CC
(500mA)
I
OUT
= 5mA
I
OUT
= 1mA
17.4
17.7
17.6
17.5
17.8
17.9
18.0
18.1
18.2
18.3
18.4
0
10
5
15
20
25
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1605 toc03
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
LIM = V
CC
(500mA)
LIM = GND
(125mA)
LIM = OPEN
(250mA)
Typical Operating Characteristics
(V
CC
= 3.3V, V
IN
= 3.6V, L1 = 10µH, SHDN = LIM = V
CC
, V
OUT(NOM)
= 18V (Figure 3), T
A
= +25°C, unless otherwise noted.)
Note 1: All devices are 100% tested at T
A
= +25°C. All limits over the temperature range are guaranteed by design.
Note 2: The MAX1605 requires a supply voltage between +2.4V and +5.5V; however, the input voltage used to power the inductor
can vary from +0.8V to V
OUT
.
MAX1605
28V Internal Switch LCD Bias Supply
in SOT23
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= SHDN = 3.3V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
LIM Input Low Level
2.4V
≤ V
CC
≤ 5.5V
0.4
V
LIM Input Float Level
2.4V
≤ V
CC
≤ 5.5V,
I
LIM
=
±0.5µA
(V
CC
/ 2)
- 0.25V
(V
CC
/ 2)
+ 0.25V
V
LIM Input High Level
2.4V
≤ V
CC
≤ 5.5V
V
CC
- 0.4V
V
SHDN = V
CC
, LIM = GND or V
CC
-2
2
LIM Input Bias Current
I
LIM
SHDN = GND
1
µA