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参数资料
| 型号： | MAX17075ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/23页 |
| 文件大小： | 0K |
| 描述： | IC DC-DC CONV W/CHRG PUMP 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | LCD 电视机/监控器 |
| 电流 - 电源： | 4mA |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
PCB Layout and Grounding
Careful PCB layout is important for proper operation.
Use the following guidelines for good PCB layout:
the operational amplifier divider ground connec-
tions, the COMP and DEL capacitor ground con-
nections, and the device’s exposed backside pad.
Connect the AGND and PGND islands by connect-
?
Minimize the area of high-current loops by placing
the inductor, the output diode, and the output
capacitors near the input capacitors and near the
ing the PGND pin directly to the exposed backside
pad. Make no other connections between these
separate ground planes.
?
?
LX and PGND pins. The high-current input loop
goes from the positive terminal of the input capaci-
tor to the inductor, to the IC’s LX pin, out of PGND,
and to the input capacitor’s negative terminal. The
high-current output loop is from the positive terminal
of the input capacitor to the inductor, to the output
diode (D1), and to the positive terminal of the output
capacitors, reconnecting between the output
capacitor and input capacitor ground terminals.
Connect these loop components with short, wide
connections.
Avoid using vias in the high-current paths. If vias
are unavoidable, use many vias in parallel to
reduce resistance and inductance.
Create a power-ground island (PGND) consisting of
the input and output capacitor grounds, PGND pin,
and any charge-pump components. Connect all
these together with short, wide traces or a small
ground plane. Maximizing the width of the power
ground traces improves efficiency and reduces out-
?
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Place all feedback voltage-divider resistors within
5mm of their respective feedback pins. 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.
Take care to avoid running any feedback trace near
LX or the switching nodes in the charge pumps, or
provide a ground shield.
Place the V CC pin and REF pin bypass capacitors
as close as possible to the device. The ground con-
nection of the V CC bypass capacitor should be con-
nected directly to the AGND pin with a wide trace.
Minimize the length and maximize the width of the
traces between the output capacitors and the load
for best transient responses.
Minimize the size of the LX node while keeping it
wide and short. Keep the LX node away from feed-
back nodes (FB, FBP, and FBN) and analog
ground. Use DC traces to shield if necessary.
put voltage ripple and noise spikes. Create an ana-
log ground plane (AGND) consisting of the AGND
pin, all the feedback-divider ground connections,
Maxim Integrated
Refer to the MAX17075 evaluation kit for an example of
proper PCB layout.
21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17075EVKIT+ | 功能描述:电源管理IC开发工具 MAX17075 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 |
| MAX17077AETM+ | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX17077AETM+T | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX17077AETM+W | 制造商:Maxim Integrated Products 功能描述:INTERNAL-SWITCH BOOST REGULATOR - Rail/Tube |
| MAX17077ETM+ | 功能描述:低压差稳压器 - LDO Hybrid 500mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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