参数资料
型号: MAX8571EUT+T
厂商: Maxim Integrated Products
文件页数: 4/11页
文件大小: 0K
描述: IC CONV LCD BOOST SOT23-6
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 转换器,LCD
输入电压: 2.7 V ~ 5.5 V
输出数: 1
输出电压: 2.7 V ~ 28 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-6
包装: 带卷 (TR)
High-Efficiency LCD Boost
with True Shutdown
Typical Operating Characteristics (continued)
(MAX8571, V CC = 3.6V, V OUT = 18V, Circuit of Figure 2, T A = +25 ° C, unless otherwise noted.)
100
EFFICIENCY vs. BATTERY VOLTAGE
(FIGURE 4)
100
EFFICIENCY vs. LOAD CURRENT
WITH 22 μ H INDUCTOR
100
EFFICIENCY vs. LOAD CURRENT
WITH 47 μ H INDUCTOR
90
5mA LOAD
90
MAX8570, MURATA LQH32CN220K23
90
MAX8570, L1 = MURATA LQH32CN470K23
80
1mA LOAD
80
80
70
70
MAX8571, MURATA LQH32CN220K23
70
MAX8571, L1 = TOKO A914BYW-470M
MAX8574, TOKO A914BYW-220M
60
60
60
50
40
V CC = 3.6V
L1 = MURATA LQH32CN220K23
50
40
50
40
0
2
4
6
8
10
12
0.1
1
10
100
0.1
1
10
100
BATTERY VOLTAGE (V)
PEAK INDUCTOR CURRENT LIMIT
vs. SUPPLY VOLTAGE
LOAD CURRENT (mA)
SUPPLY CURRENT vs. LOAD CURRENT
LOAD CURRENT (mA)
NO-LOAD CURRENT vs. SUPPLY VOLTAGE
700
600
MAX8574
120
100
80
70
R1 = 7.87M Ω
R2 = 576k Ω
R1 = 3.9M Ω
R2 = 287k Ω
500
400
MAX8571
80
60
50
60
40
MAX8573,
300
200
MAX8570
40
30
20
FIGURE 3
100
0
20
0
L1 = MURATA LQH32CN220K23
10
0
L1 = MURATA
LQH32CN220K23
NO SWITCHING
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
0
5
10
15
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
LINE TRANSIENT 3V TO 5.5V (MAX8571)
MAX8570/71/73/74/75 toc13
LOAD CURRENT (mA)
200mV/div
SUPPLY VOLTAGE (V)
LINE TRANSIENT 3V TO 5.5V
(FIGURE 3, MAX8573)
MAX8570/71/73/74/75 toc14
V OUT
V CC
100 μ s/div
3.6k Ω LOAD, R1 = 3.9M Ω , R2 = 287k Ω
(AC-COUPLED)
2V/div
0
V OUT
V CC
3k Ω LOAD
100 μ s/div
200mV/div
(AC-COUPLED)
2V/div
0
4
_______________________________________________________________________________________
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