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参数资料
| 型号： | MAX17062ETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/14页 |
| 文件大小： | 0K |
| 描述： | IC TFT-LCD DC/DC CONV 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | LCD 显示器 |
| 电流 - 电源： | 1.5mA |
| 电源电压： | 2.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX17062ETB+TDKR |
TFT-LCD Step-Up DC-DC Converter
VGOFF
-15V
1
D2
C12
0.1 μ F
C14
0.1 μ F
D3
2
C15
VGON
+29V
C11
0.22 μ F
2
3
3
1
0.22 μ F
L1
V IN
4.5V TO 5.5V
C1
4.7 μ F
10V
C2
4.7 μ F
10V
R5
10 Ω
C3
8
IN
2.7 μ H
U1
LX
LX
6
7
D1
C7
10 μ F
25V
C8
10 μ F
25V
V OUT
+15V/600mA
1 μ F
MAX17062 PGND 5
3
SHDN
PGND
4
R4
R1
100k Ω
9
FREQ
FB
2
221k Ω
C4
10
SS
COMP
AGND
EP
R3
20k Ω
33nF
Figure 3. Multiple-Output TFT-LCD Power Supply
R2
47k Ω
C5
560pF
1
C6
OPEN
Multiple-Output Power Supply for TFT-LCD
Figure 3 shows a power supply for active-matrix TFT-
LCD flat-panel displays. Output-voltage transient perfor-
mance is a function of the load characteristic. Add or
remove output capacitance (and recalculate compensa-
tion-network component values) as necessary to meet
the required transient performance. Regulation perfor-
mance for secondary outputs (VGON and VGOFF)
depends on the load characteristics of all three outputs.
PCB Layout and Grounding
Careful PCB layout is important for proper operation. Use
the following guidelines for good PCB layout:
1) Minimize the area of high-current loops by placing
the inductor, rectifier diode, and output capacitors
near the input capacitors and near the LX and
PGND pins. The high-current output loop goes from
the positive terminal of the input capacitor to the
inductor, to the IC’s LX pin, out of PGND, and to the
input capacitor’s negative terminal. The high-cur-
rent output loop is from LX switch node to the recti-
fier diode (D1) to the output capacitors, and
reconnecting negative terminals of output capaci-
tors to PGND of the IC. This loop has very high
di/dt, and it is critical to minimize the area of this
loop. Connect these loop components with short,
wide connections. Avoid using vias in the high-cur-
rent paths. If vias are unavoidable, use many vias in
parallel to reduce resistance and inductance.
2) Create a power ground island (PGND) consisting of
the input and output capacitor grounds and PGND
pins. Connect all these together with short, wide
traces or a small ground plane. Maximizing the
width of the power ground traces improves efficien-
cy and reduces output voltage ripple and noise
spikes. Create an analog ground plane (AGND)
consisting of the feedback-divider ground connec-
tion, the COMP and SS capacitor ground connec-
tions, and the device ’s exposed backside pad.
Connect the AGND and PGND islands by connect-
ing the PGND pins directly to the exposed backside
pad. Make no other connections between these
separate ground planes.
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17062EVKIT | 功能描述:电源管理IC开发工具 MAX17062 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 |
| MAX17062EVKIT+ | 功能描述:电源管理IC开发工具 MAX17062 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 |
| MAX17065ETI+ | 功能描述:直流/直流开关转换器 TFT-LCD Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX17065ETI+T | 功能描述:直流/直流开关转换器 TFT-LCD Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX17065EVKIT+ | 功能描述:电源管理IC开发工具 MAX17065 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 |
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