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参数资料
| 型号： | MAX15035ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/27页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 15A 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.05V，1.5V |
| 输入电压： | 4.5 V ~ 26 V |
| PWM 型： | 电流模式 |
| 电流 - 输出： | 15A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
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15A Step-Down Regulator with Internal Switches
V IN ( MIN ) = ?
? = 3 . 74 V
V IN ( MIN ) = ?
? = 3 . 52 V
? 3 . 3 V ? 0 V + 150 mV ?
? 1 ? ( 1 . 5 × 350 ns × 300 kHz ) ?
Calculating again with h = 1 gives the absolute limit of
dropout:
? 3 . 3 V ? 0 V + 150 mV ?
? 1 ? ( 1 . 0 × 350 ns × 300 kHz ) ?
Therefore, V IN must be greater than 3.52V, even with
very large output capacitance, and a practical input volt-
age with reasonable output capacitance would be 3.74V.
Applications Information
PCB Layout Guidelines
Careful PCB layout is critical to achieve low switching
losses and clean, stable operation. The switching
power stage requires particular attention. If possible,
mount all the power components on the top side of the
board with their ground terminals flush against one
another. Follow these guidelines for good PCB layout:
1) Keep the high-current paths short, especially at the
ground terminals. This is essential for stable, jitter-
free operation.
2) Connect all analog grounds to a separate solid
copper plane, which connects to the AGND pin of
the Quick-PWM controller. This includes the V CC
bypass capacitor, REF bypass capacitors, REFIN
components, and feedback compensation/dividers.
3) Keep the power traces and load connections short.
This is essential for high efficiency. The use of thick
copper PCB (2oz vs. 1oz) can enhance full-load
efficiency by 1% or more. Correctly routing PCB
traces is a difficult task that must be approached in
terms of fractions of centimeters, where a single
milliohms of excess trace resistance causes a mea-
surable efficiency penalty.
4) Keep the power plane—especially LX—away from
sensitive analog areas (REF, REFIN, FB, ILIM).
Layout Procedure
1) Place the power components first, with ground ter-
minals adjacent (C IN and C OUT ). If possible, make
all these connections on the top layer with wide,
copper-filled areas.
2) Make the DC-DC controller ground connections as
shown in Figure 1. This diagram can be viewed as
having four separate ground planes: input/output
ground, where all the high-power components go;
the power ground plane, where the PGND pin and
V DD bypass capacitor go; the controller’s analog
ground plane where sensitive analog components,
the controller’s AGND pin, and V CC bypass capaci-
tor go. The controller’s AGND plane must meet the
PGND plane only at a single point directly beneath
the IC. This point must also be very close to the out-
put capacitor ground terminal.
3) Connect the output power planes (V CORE and sys-
tem ground planes) directly to the output filter
capacitor positive and negative terminals with multi-
ple vias. Place the entire DC-DC converter circuit
as close to the load as is practical.
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15035EVKIT+ | 功能描述:电源管理IC开发工具 MAX15035 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 |
| MAX15036ATE/V+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE/V+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
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