参数资料
型号: MAX1778EUG+T
厂商: Maxim Integrated Products
文件页数: 13/39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: 2,500
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: 带卷 (TR)
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.)
POWER-SUPPLY REJECTION RATIO
REGION OF STABLE C LDOOUT ESR
LOAD-TRANSIENT RESPONSE
100
80
vs. FREQUENCY
100
10
vs. LOAD CURRENT
C LDOOUT = 1 μ F
4OmA
0
(INTERNAL LINEAR REGULATOR)
MAX1778 toc29
A
60
1
40
5.00V
B
20
C LDOOUT = 4.7 μ F
I LDOOUT = 40mA
0.1
STABLE REGION
4.96V
0
1
10
100
1000
0.01
0
10
20
30
40
100 μ s/div
FREQUENCY (kHz)
LOAD-TRANSIENT RESPONSE NEAR
DROPOUT (INTERNAL LINEAR REGULATOR)
MAX1778 toc30
I LDOOUT (mA)
INTERNAL LINEAR-REGULATOR
RIPPLE REJECTION
MAX1778 toc31
A. I LDO = 100 μ A TO 40mA, 40mA/div
B. V LDO = 5V, 20mV/div
V SUPL = V LDO + 500mV
INTERNAL LINEAR-REGULATOR
STARTUP
MAX1778 toc32
4OmA
0
A
5.0V
A
2V
0
A
B
8.0V
B
4V
5.00V
B
2V
1.0A
0.5A
0
C
4.94V
0
C
4V
2V
100 μ s/div
A. I LDO = 100 μ A TO 40mA, 40mA/div
B. V LDO = 5V, 20mV/div
V IN = V LDO + 100mV
Maxim Integrated
10 μ s/div
A. V LDOOUT = 5V, I LDOOUT = 40mA, 10mV/div
B. V MAIN = V SUPL = 8V, 200mV/div
C. I MAIN = 0 TO 750mA, 500mA/div
400 μ s/div
A. V SHDN = 0 TO 2V, 2V/div
B. V LDOOUT = 5V, R LDOOUT = 125 ? , 2V/div
C. V MAIN = 8V, R MAIN = 40 ? , 2V/div
13
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