参数资料
型号: MAX1779EUE+T
厂商: Maxim Integrated Products
文件页数: 8/18页
文件大小: 0K
描述: IC DC-DC CONV TRPL LCD 16-TSSOP
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: 3
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: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 带卷 (TR)
Low-Power Triple-Output TFT LCD DC-DC
Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 5, V IN = +3.3V, T A = +25°C, unless otherwise noted.)
STARTUP WAVEFORM
2V
0
5V
(L = 33 μ H)
MAX1779-22
A
2V
0
5V
POWER-UP SEQUENCING
MAX1779-23
A
B
B
3V
500mA
0
-10V
C
0
C
10V
D
0
200 μ s/div
A. V SHDN = 0 to 2V, 2V/div
B. V MAIN = 5V, 1V/div
C. I L , 500mA/div
R MAIN = 50 Ω
4ms/div
A. V SHDN = 0 to 2V, 2V/div
B. V MAIN = 5V, R MAIN = 50 Ω , 2.5V/div
C. V NEG = -8V, R NEG = 8k Ω , 10V/div
D. V POS = +12V, R POS = 12k Ω , 10V/div
Pin Description
PIN
1
2
3
4
5
6
7
8
9
NAME
RDY
FB
INTG
IN
GND
REF
FBP
FBN
SHDN
FUNCTION
Active-Low Open-Drain Output. Indicates all outputs are ready. The on-resistance is 125 Ω (typ).
Main Boost Regulator Feedback Input. Regulates to 1.25V nominal. Connect feedback resistive
divider to analog ground (GND).
Main Boost Integrator Output. If used, connect 2200pF to analog ground (GND). To disable
integrator, connect to REF.
Supply Input. +2.7V to +5.5V input range. Bypass with a 0.1 μ F capacitor between IN and GND, as
close to the pins as possible.
Analog Ground. Connect to power ground (PGND) underneath the IC.
Internal Reference Bypass Terminal. Connect a 0.22 μ F capacitor from this terminal to analog ground
(GND). External load capability to 50 μ A.
Positive Charge-Pump Regulator Feedback Input. Regulates to 1.25V nominal. Connect feedback
resistive divider to analog ground (GND).
Negative Charge-Pump Regulator Feedback Input. Regulates to 0V nominal.
Active-Low Logic-Level Shutdown Input. Connect SHDN to IN for normal operation.
8
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