参数资料
型号: MAX1747EUP+T
厂商: Maxim Integrated Products
文件页数: 7/13页
文件大小: 0K
描述: IC CHRG-PUMP TRPL TFTLCD 20TSSOP
标准包装: 2,500
应用: 转换器,TFT,LCD
输入电压: 2.7 V ~ 4.5 V
输出数: 3
输出电压: 可调
工作温度: 0°C ~ 85°C
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
Triple Charge-Pump TFT LCD
DC-DC Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = V SUPM = +3.3V, T A = +25 ° C, unless otherwise noted.)
MAXIMUM POSITIVE CHARGE-PUMP
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
LOAD TRANSIENT
34
V POS(NOMINAL) = 32V
200mA
MAX1747 toc14
28
22
16
10
I POS = 1mA
I POS = 10mA
100mA
0
5.05V
5V
I OUT
100mA/div
V OUT
50mV/div
4.95V
4
3
5
7
9
11
13
40 μ s/div
V SUPP (V)
RIPPLE WAVEFORM
MAX1747 toc15
V IN = 3.3V, V OUT = 5.0V
R OUT = 500 ? TO 25 ?
C INTG = 1500pF
STARTUP WAVEFORM (NO LOAD)
MAX1747 toc16
400ns/div
V OUT = +5.0V,I OUT = 200mA
V NEG = -7V, I NEG = 10mA
V POS = +12V, I POS = 5mA
STARTUP WAVEFORM (200mA LOAD)
MAX1747 toc17
V OUT
20mV/div
V NEG
10mV/div
V POS
10mV/div
2V
0
4V
2V
4V
2V
0
1ms/div
V OUT = 5V, NO LOAD
ON CONNECTED TO SHDN THROUGH
A 58k ? RESISTOR
POWER-UP SEQUENCE
MAX1747 toc18
V ON
2V/div
V CXP
2V/div
V OUT
2V/div
2V
0
4V
2V
4V
2V
0
1ms/div
V OUT = 5V, R OUT = 25 ? (200mA)
ON CONNECTED TO SHDN THROUGH
A 58k ? RESISTOR
V ON
2V/div
V CXP
2V/div
V OUT
2V/div
2V
0
5V
0
-10V
10V
0
2ms/div
V MAIN = 5V, V NEG = - 7V, V POS = 12V
ON CONNECTED TO SHDN THROUGH
A 58k ? RESISTOR
V ON
2V/div
V MAIN
5V/div
V NEG
10V/div
V POS
10V/div
_______________________________________________________________________________________
7
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