参数资料
型号: MAX1543ETP+
厂商: Maxim Integrated Products
文件页数: 6/20页
文件大小: 0K
描述: IC DC-DC CONV TFT-LCD 20-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 60
应用: 控制器,TFT LCD
输入电压: 2.6 V ~ 5.5 V
输出数: 2
输出电压: 2.6 V ~ 13 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WQFN 裸露焊盘
供应商设备封装: 20-TQFN-EP(5x5)
包装: 管件
TFT LCD DC-to-DC Converter with
Operational Amplifiers
Typical Operating Characteristics
(V IN = 3.3V, V MAIN = 8V, f OSC = 1.2MHz, T A = +25 ° C, unless otherwise noted.)
95
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT (V MAIN = 8V)
95
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT (V MAIN = 8V)
8.1
STEP-UP REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT (V MAIN = 8V)
90
85
80
MAX1543
f OSC = 1.2MHz
L = 4.7 μ H
V IN = 5V
90
85
80
MAX1543
f OSC = 640kHz
L = 10 μ H
V IN = 5V
8.0
7.9
75
70
65
60
55
50
V IN = 3.3V
V IN = 2.7V
75
70
65
60
55
50
V IN = 5V
V IN = 3.3V
V IN = 2.7V
7.8
7.7
7.6
7.5
V IN = 3.3V
f OSC = 1.2MHz
1
10
100
1000
1
10
100
1000
1
10
100
1000
0.7
LOAD CURRENT (mA)
STEP-UP REGULATOR SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.0
LOAD CURRENT (mA)
STEP-UP REGULATOR SUPPLY CURRENT
vs. TEMPERATURE
NO LOAD
1400
LOAD CURRENT (mA)
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX1543
0.6
0.5
0.4
CURRENT INTO INDUCTOR
CURRENT INTO IN PIN
1.6
1.2
V IN = 3.3V
f OSC = 1.2MHz
R 1 = 75k ?
R 2 = 13.7k ?
SUP DISCONNECTED
1200
1000
I MAIN = 200mA
FREQ = IN
CURRENT INTO INDUCTOR
0.3
0.8
800
FREQ = AGND
0.2
0.1
0
NO LOAD
f OSC = 1.2MHz
R 1 = 75k ?
R 2 = 13.7k ?
SUP DISCONNECTED
0.4
0
CURRENT INTO IN PIN
600
400
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V IN (V)
SUP SUPPLY CURRENT
vs. SUP VOLTAGE
TEMPERATURE ( ° C)
SUP SUPPLY CURRENT
vs. TEMPERATURE
V IN (V)
1.75
NO LOAD
BUFFER CONFIGURATION
2.0
V SUP = 13V
POS_ = V SUP /2
1.50
1.6
V SUP = 8V
1.25
1.2
1.00
V SUP = 5V
NO LOAD
BUFFER CONFIGURATION
V POS = V SUP /2
0.75
0.8
4.5
6.0
7.5
9.0
10.5
12.0
13.5
-40
-15
10
35
60
85
V SUP (V)
TEMPERATURE ( ° C)
6
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