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参数资料
| 型号： | MAX8723ETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC REG FOR LCD DISPLAY 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 应用： | 转换器，LCD |
| 输入电压： | 6 V ~ 13.2 V |
| 输出数： | 1 |
| 输出电压： | 3.3V，2 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1411 (CN2011-ZH PDF) |
Low-Cost, Internal-Switch, Step-Down
Regulator for LCD Displays
RA = RB × ? OUT ? 1 ?
Dual-Mode Feedback
The step-down regulator of the MAX8723 supports both
fixed output and adjustable output. Connect FB to GND
to enable the 3.3V fixed-output voltage (Figure 1).
Connect a resistive voltage-divider between OUT and
GND with the center tap connected to FB to adjust the
output voltage (Figure 4). Choose RB to be between
5k ? and 50k ? , and solve for RA using the equation:
? V ?
? V FB ?
Frequency Selection (FSEL)
The FSEL input selects the internal oscillator switching
frequency. Table 3 shows the switching frequency
based on the FSEL connection. High-frequency
(1.5MHz) operation optimizes the application for the
smallest component size, trading off efficiency because
of higher switching losses. Low-frequency (500kHz)
operation offers the best overall efficiency at the expense
of component size and board space.
Table 3. Frequency Selection
where V FB = 2V, and V OUT can vary from 2V to 3.6V.
FSEL
GND
VCC
REF
SWITCHING FREQUENCY (kHz)
1500
1000
500
IN = 12V ± 10%
0.22 μ F
INL
VCC2
IN
VL = 5V/25mA
SHDN
VL
BST
0.1 μ F
C IN
1 μ F
VCC
LX
CMS03
L
OUT
GND
MAX8723
EP
TOSHIBA
C OUT
PGND
0.22 μ F
V REF = 2V/50 μ A
REF
FSEL
OUT
FB
RA
I.C.
EXT
RB
SEE TABLE 1 FOR COMPONENT SELECTION
Figure 4. Typical Operating Circuit, Adjustable Output
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8723ETE+ | 功能描述:显示驱动器和控制器 Int-Switch Step-Down Regulator for LCDs RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX8723ETE+T | 功能描述:显示驱动器和控制器 Int-Switch Step-Down Regulator for LCDs RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| MAX8723EVKIT | 功能描述:电源管理IC开发工具 MAX8723 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX8724AETI+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8724ETI | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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