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參數(shù)資料
| 型號： | MAX8574EUT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Hex Schmitt-trigger Inverters 14-CFP -55 to 125 |
| 中文描述： | 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | MO178AB, SOT-23, 6 PIN |
| 文件頁數(shù)： | 3/10頁 |
| 文件大小： | 654K |
| 代理商： | MAX8574EUT-T |
M
High-Efficiency LCD Boost
with True Shutdown
_______________________________________________________________________________________
3
EFFICIENCY vs. SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
E
5.1
4.7
4.3
3.9
3.5
3.1
75
80
85
90
95
100
70
2.7
5.5
L1 = TOKO A914BYW-470M
47
μ
H, 1mA LOAD
47
μ
H, 5mA LOAD
L1 = MURATA LQH32CN220K23
22
μ
H, 5mA LOAD
22
μ
H, 1mA LOAD
Typical Operating Characteristics
(MAX8571, V
CC
= 3.6V, V
OUT
= 18V, Circuit of Figure 2, T
A
= +25
°
C, unless otherwise noted.)
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE (MAX8571)
M
SUPPLY VOLTAGE (V)
O
5.1
4.7
3.9
4.3
3.5
3.1
17.6
17.7
17.8
17.9
18.0
18.1
18.2
18.3
18.4
18.5
17.5
2.7
5.5
L1 = MURATA LQH32CN220K23
R1 = 3.9M
, R2 = 287k
5mA LOAD
1mA LOAD
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE (FIGURE 3, MAX8573)
15.5
M
SUPPLY VOLTAGE (V)
O
5.1
4.7
3.9
4.3
3.5
3.1
14.6
14.7
14.8
14.9
15.0
15.1
15.2
15.3
15.4
14.5
2.7
5.5
L1 = MURATA LQH32CN220K23
5mA LOAD
1mA LOAD
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE (MAX8574)
M
SUPPLY VOLTAGE (V)
O
4.6
4.3
4.0
3.7
3.4
17.2
18.2
18.0
17.8
17.6
17.4
18.4
18.6
18.8
19.0
17.0
3.1
4.9
L1 = TOKO S1024-100M
R1 = 1.1M
, R2 = 75k
, C4 = 4.7pF
5mA LOAD
20mA LOAD
OUTPUT VOLTAGE
vs. LOAD CURRENT
M
LOAD CURRENT (mA)
O
20
15
5
10
17.6
17.8
18.0
18.2
18.4
18.6
18.8
19.0
17.4
0
25
L1 = MURATA LQH32CN220K23
R1 = 3.9M
, R2 = 287k
, C4 = 10pF
MAX8570
MAX8571
MAX8574, R1 = 1.1M
, R2 = 75k
, C4 = 4.7pF
OUTPUT VOLTAGE vs. TEMPERATURE
M
TEMPERATURE (
°
C)
O
60
35
10
-15
17.7
17.8
17.9
18.0
18.1
18.2
18.3
18.4
17.6
-40
85
1mA LOAD
Note 1:
Parameters are production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 2:
Specified currents are measured at DC. Actual LX current limits are slightly higher in circuit due to current-limit comparator
delay. Actual currents (with 2μH) are 110mA (MAX8570/MAX8572), 250mA (MAX8571/MAX8573), and 500mA
(MAX8574/MAX8575).
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
SHDN
= 3.6V, SW floating, V
FB
= 1.3V (MAX8570/MAX8571/MAX8574) or V
OUT
= 16V (MAX8572/MAX8573/MAX8575), T
A
=
-40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
CONDITIONS
V
CC
= 3.6V, V
SW
= 0V, V
FB
= 0V, I
CC
(peak)
SW PMOS Current Limit
V
CC
= 3.6V, V
SW
= 0V, V
FB
= 0V, I
CC
(average)
SW PMOS On-Resistance
V
CC
= 2.7V, V
FB
= 0V, I
SW
= 100mA
MIN
0.45
0.15
TYP
0.75
0.30
1.5
0.01
0.02
0.2
MAX
1.10
0.60
2.5
1
UNITS
A
T
A
= +25
°
C
T
A
= -40
°
C to +85
°
C
SW PMOS Leakage Current
SW = GND, V
CC
= 5.5V, V
FB
= 0V
μA
SW Soft-Start Time
V
CC
= 2.7V, C
SW
= 4.7μF
1
ms
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