参数资料
型号: MAX1778EUG+
厂商: Maxim Integrated Products
文件页数: 14/39页
文件大小: 0K
描述: IC DCDC CONV MULTI OUT 24TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 62
应用: 转换器,TFT,LCD
输入电压: 2.7 V ~ 5.5 V
输出数: 5
输出电压: 2.7 V ~ 13 V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 管件
MAX1778/MAX1880–MAX1885
Quad-Output TFT LCD DC/DC
Converters with Buffer
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = +3.3V, SHDN = IN, V MAIN = V SUPP = V SUPN = V SUPB = V SUPL = 8V, BUF- = BUFOUT,
BUF+ = FLTSET = TGND = PGND = GND, T A = +25°C.)
LINEAR-REGULATOR OUTPUT VOLTAGE
LINEAR-REGULATOR OUTPUT VOLTAGE
vs. INPUT VOLTAGE
vs. LOAD CURRENT
EXTERNAL LINEAR-REGULATOR
2.55
(EXTERNAL LINEAR REGULATOR)
2.55
(EXTERNAL LINEAR REGULATOR)
LOAD-TRANSIENT RESPONSE
MAX1778 toc35
FIGURE 7
250mA
2.53
2.51
I LDO = 0
2.53
2.51
50mA
A
2.55V
2.49
2.47
I LDO = 750mA
2.49
2.47
2.50V
2.45V
B
FIGURE 7
2.45
2.45
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.1
1
10
100
1000
100 μ s/div
V IN (V)
EXTERNAL LINEAR-REGULATOR
RIPPLE REJECTION
MAX1778 toc36
2.5
I LDO (mA)
INPUT OFFSET VOLTAGE DEVIATION
vs. COMMON-MODE VOLTAGE
1.0
A. I LDO = 50mA TO 250mA, 200mA/div
B. V LDO = 2.5V, 50mV/div
FIGURE 7
INPUT OFFSET VOLTAGE DEVIATION
vs. BUFFER SUPPLY VOLTAGE
2.5V
A
1.5
0.6
V CM = V SUPB / 2
8.0V
B
0.5
V SUPB = 4.5V
V SUPB = 13V
0.2
7.8V
1A
-0.5
-0.2
0.5A
C
-1.5
-0.6
0
10 μ s/div
-2.5
0
2
4
6
8
10
12
14
-1.0
4
6
8
10
12
14
14
A. V LDO = 2.5V, I LDO = 200mA, 10mV/div
B. V MAIN = V SUPL = 8V, 200mV/div
C. I MAIN = 0 TO 750mA, 500mA/div
FIGURE 7
V CM (V)
V SUPB (V)
Maxim Integrated
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