参数资料
型号: MAX1542ETP+T
厂商: Maxim Integrated Products
文件页数: 8/20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: 2,500
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: 带卷 (TR)
TFT LCD DC-to-DC Converter with
Operational Amplifiers
Typical Operating Characteristics (continued)
(V IN = 3.3V, V MAIN = 8V, f OSC = 1.2MHz, T A = +25 ° C, unless otherwise noted.)
STEP-UP REGULATOR
PULSED LOAD-TRANSIENT RESPONSE
MAX1542 toc16
STARTUP SEQUENCE
MAX1542 toc17
V IN
2V/div
I MAIN
1A/div
V MAIN
8V/div
I L
500mA/div
V MAIN
100mV/div
AC-COUPLED
10 μ s/div
L = 4.7 μ H
R COMP = 120k ?
C COMP = 470pF
1ms/div
V GOFF
5V/div
V COM
10V/div
HEAVY-LOAD
SOFT-START WAVEFORMS
MAX1542 toc18
R LOAD = 10 ?
2ms/div
V IN
5V/div
V MAIN
5V/div
I L
500mA/div
TIMER DELAY LATCH
RESPONSE TO OVERLOAD
MAX1542 toc19
10ms/div
V MAIN
5V/div
I L
2A/div
V OUT1
5V/div
V COM
20V/div
OPERATIONAL AMPLIFIER
RAIL-TO-RAIL I/O PERFORMANCE
MAX1542 toc20
V SUP = 8V
BUFFER CONFIGURATION
100 μ s/div
V POS1
5V/div
V OUT1
5V/div
OPERATIONAL AMPLIFIER
LOAD-TRANSIENT RESPONSE
MAX1542 toc21
OPERATIONAL AMPLIFIER
LARGE-SIGNAL STEP RESPONSE
MAX1542 toc22
4V
V OUT1
1V/div
AC-COUPLED
4V
V POS1
500mV/div
AC-COUPLED
+50
0
-50
I OUT1
50mA/div
V SUP = 8V
A V = 10
V OUT1
2V/div
BUFFER CONFIGURATION
1 μ s/div
1 μ s/div
8
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