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参数资料
| 型号： | MAX1513ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/28页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR TFT-LCD PS 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，TFT LCD |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 2.7 V ~ 50 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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TFT-LCD Power-Supply Controllers
PC Board Layout and Grounding
Careful PC board layout is important for proper operation.
Use the following guidelines for good PC board layout:
1) Minimize the area of high-current loops. The high-
current input loop goes from the positive terminals of
the input capacitors to the inductor, to the power
MOSFET, and to the negative terminals of the input
capacitors. The high-current output loop is from the
positive terminals of the input capacitors to the
inductor, to the output diode, and to the positive ter-
minals of the output capacitors, reconnecting
between the output-capacitor and input-capacitor
ground terminals. Connect these loops 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 plane consisting of the input
and output-capacitor ground terminals, the source of
the power MOSFET, and any ground terminals of the
charge-pump components. Connect all of these
together with short, wide traces or a small ground
plane. Maximizing the width of the power ground
traces improves efficiency and reduces output volt-
age ripple and noise spikes. Create an analog
ground plane consisting of the IC’s backside pad, all
the feedback-divider ground connections, the buffer-
amplifier-divider ground connection, the REF capaci-
tor ground connection, and the DEL capacitor ground
connection. The power ground plane and the analog
ground plane should be connected at only one loca-
Pin Configuration
TOP VIEW
tion, which is the IC’s GND pin. All other ground con-
nections, such as the IN pin bypass capacitor and
the linear-regulator output capacitors, should be star-
connected directly to the backside pad of the IC
through a via with wide traces, not otherwise connect-
ing to either the power ground plane or the analog
ground plane. Connect the IC’s backside pad to the
IC’s GND pin. Make no other connections between
the analog and power ground planes.
3) Place IN and REF bypass capacitors as close to the
device as possible.
4) Place all feedback-voltage-divider resistors as close
to their respective feedback pins as possible. The
divider’s center trace should be kept short. Placing
the resistors far away causes their FB traces to
become antennas that can pick up switching noise.
Care should be taken to avoid running any feedback
trace near the switching nodes in the step-up regu-
lator and charge pumps.
5) Minimize the length and maximize the width of the
traces between the output capacitors and the load
for best transient responses.
6) Minimize the size of the switching node while keeping
it wide and short. Keep the switching node away from
feedback nodes (FB, FBP, FBL, FBG, and FBN) and
analog ground. Use DC traces to shield if necessary.
Refer to the MAX1513 evaluation kit for an example of
proper board layout.
Chip Information
TRANSISTOR COUNT: 4807
PROCESS: BiCMOS
REF
SDFR
1
2
20
19
18
17
16
15
14
GND
DRVP
*FBPB
*OUTB
*SUPB
3
4
5
MAX1513
MAX1514
13
12
11
FBP
*FBG
*DRVG
6
7
8
9
10
THIN QFN
4mm x 4mm
*N.C. FOR MAX1514
______________________________________________________________________________________
27
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1513EVKIT | 功能描述:电源管理IC开发工具 MAX1513/14 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 |
| MAX1514ETP | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1514ETP+T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1514ETP-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1515ETG | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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