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参数资料
| 型号： | MIC28500 2A EV |
| 厂商： | Micrel Inc |
| 文件页数： | 2/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR MIC28500 2A |
| 标准包装： | 1 |
| 系列： | Hyper Speed Control™，SuperSwitcher II™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 12V |
| 电流 - 输出： | 2A |
| 输入电压： | 30 ~ 75V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 250kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MIC28500 |
| 其它名称： | 576-4019 |
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Micrel, Inc.
Ordering Information
MIC28500
Part Number
MIC28500YJL
Voltage
Adjustable
Switching Frequency
Adjustable
Junction Temperature Range
? 40 ° C to + 125 ° C
Package
28-pin 5mm × 6mm MLF ?
Lead Finish
Pb-Free
Pin Configuration
28-Pin 5mm × 6mm MLF ? (YJL)
Pin Description
Pin
Number
13, 14, 15,
16, 17, 18,
19
24
25
26
27
2, 5, 6, 7,
8, 21
22
Pin Name
PVIN
EN
FB
SGND
VDD
PGND
CS
Pin Function
High-Side internal N-channel MOSFET Drain Connection (Input): The PVIN operating voltage range
is from 30V to 75V. Input capacitors between the PVIN pins and the power ground (PGND) are
required and keep the connection short. Enabling the device below 30V VIN and under maximum
loading could heat up the device beyond safe operating conditions.
Enable (Input): A logic level control of the output. The EN pin is CMOS-compatible. Logic high or
floating = enable, logic low = shutdown. In the off state, the V DD supply current of the device is
reduced (typically 0.7mA). Do not pull the EN pin above the V DD supply. Enabling the device below
30V VIN and under maximum loading could heat up the device beyond safe operating conditions.
Feedback (Input): Input to the transconductance amplifier of the control loop. The FB pin is regulated
to 0.8V. A resistor divider connecting the feedback to the output is used to adjust the desired output
voltage.
Signal ground. SGND must be connected directly to the ground planes. Do not route the SGND pin to
the PGND Pad on the top layer, see PCB layout guidelines for details.
VDD Bias (Input): Power to the internal reference and control sections of the MIC28500. The VDD
operating voltage range is from 4.5V to 5.5V. A 2.2μF ceramic capacitor from the VDD pin to the
PGND pin must be placed next to the IC. VDD must be powered up at the same time or after PVIN to
make the soft-start function correctly.
Power Ground. PGND is the ground path for the MIC28500 buck converter power stage. The PGND
pin connects to the sources of low-side N-Channel internal MOSFETs, the negative terminals of input
capacitors, and the negative terminals of output capacitors. The loop for the power ground should be
as small as possible and separate from the signal ground (SGND) loop.
Current Sense (Input): High current output driver return. The CS pin connects directly to the switch
node. Due to the high-speed switching on this pin, the CS pin should be routed away from sensitive
nodes. CS pin also senses the current by monitoring the voltage across the low-side internal
MOSFET during OFF-time.
June 2011
2
M9999-060311-B
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相关代理商/技术参数 |
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| MIC28500YJL TR | 功能描述:直流/直流开关调节器 75V/4A DC-DC Buck Regulator with HSC 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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| MIC28500YJL-TR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 4A 28-PowerVQFN Variant, 28-MLF? 制造商:microchip technology 系列:Hyper Speed Control?，SuperSwitcher II? 包装:剪切带（CT） 零件状态:过期 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:1 电压 - 输入（最小值）:30V 电压 - 输入（最大值）:75V 电压 - 输出（最小值/固定）:0.8V 电压 - 输出（最大值）:61.5V 电流 - 输出:4A 频率 - 开关:100kHz ~ 500kHz 同步整流器:是 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:28-PowerVQFN 变式，28-MLF? 供应商器件封装:28-MLF?（5x6） 标准包装:1 |
| MIC28510 12V EV | 功能描述:电源管理IC开发工具 75V/4A DC-DC Buck Regulator with HSC - Evaluation Board 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 |
| MIC28510 5V EV | 功能描述:电源管理IC开发工具 75V/4A DC-DC Buck Regulator with HSC - Evaluation Board 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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