参数资料
型号: MAX1778EUG+
厂商: Maxim Integrated Products
文件页数: 10/39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.)
100
90
NEGATIVE CHARGE-PUMP EFFICIENCY
vs. LOAD CURRENT
V NEG = -5V
-2
-4
MAXIMUM NEGATIVE CHARGE-PUMP
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
1.27
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
80
70
60
V SUPN = 6V
V SUPN = 7 V
V SUPN = 8V
-6
-8
I NEG = 10mA
I NEG = 1mA
1.26
1.25
50
40
30
-10
-12
-14
1.24
1.23
0
10
20
30
40
2
4
6
8
10
12
14
0
20
40
60
80
100
200mA
0
8.1V
I NEG (mA)
STEP-UP CONVERTER LOAD-TRANSIENT
RESPONSE
MAX1778 toc13
A
200mA
0
8.1V
V SUPN (V)
STEP-UP CONVERTER LOAD-TRANSIENT
RESPONSE WITHOUT INTEGRATOR
MAX1778 toc14
A
0.5A
0
8.0V
I REF ( μ A)
STEP-UP CONVERTER LOAD-TRANSIENT
RESPONSE (1 μ s PULSES)
MAX1778 toc15
A
8.0V
B
8.0V
B
7.9V
B
7.9V
1A
0
40 μ s/div
A. I MAIN = 20mA to 200mA, 200mA/div
B. V MAIN = 8V, 100mV/div
C. INDUCTOR CURRENT, 1A/div
C
7.9V
1A
0
40 μ s/div
A. I MAIN = 20mA to 200mA, 200mA/div
B. V MAIN = 8V, 100mV/div
C. INDUCTOR CURRENT, 1A/div
C
1A
0.5A
0
4 μ s/div
A. I MAIN = 0 to 500mA, 500mA/div
B. V MAIN = 8V, 100mV/div
C. INDUCTOR CURRENT, 500mA/div
C
10
C INTG = 1000pF
INTG = REF
Maxim Integrated
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