参数资料
| 型号： | MIC28500YJL TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 4A 28MLF |
| 标准包装： | 1 |
| 系列： | Hyper Speed Control™，SuperSwitcher II™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 12 V |
| 输入电压： | 30 V ~ 75 V |
| PWM 型： | 混合物 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 4A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VQFN 裸露焊盘，28-MLF? |
| 包装： | 标准包装 |
| 供应商设备封装： | 28-MLF?（5x6） |
| 其它名称： | 576-3969-6 |
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MIC28500
75V/4A Hyper Speed Control ?
Synchronous DC-DC Buck Regulator
SuperSwitcher II ?
General Description
Features
The Micrel MIC28500 is an adjustable frequency,
synchronous buck regulator featuring a unique adaptive on-
time control architecture. The MIC28500 operates over an
input supply range of 30V to 75V and provides a regulated
output of up to 4A of output current. The output voltage is
adjustable down to 0.8V with a guaranteed accuracy of ±1%.
Micrel’s Hyper Speed Control ? architecture allows for ultra-
fast transient response while reducing the output capacitance
and also makes (High V IN )/(Low V OUT ) operation possible.
This adaptive t ON ripple control architecture combines the
advantages of fixed-frequency operation and fast transient
response in a single device.
The MIC28500 offers a full suite of protection features to
ensure protection of the IC during fault conditions. These
include undervoltage lockout to ensure proper operation
under power-sag conditions, internal soft-start to reduce
inrush current, foldback current limit, “hiccup” mode short-
circuit protection and thermal shutdown.
All support documentation can be found on Micrel’s web
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Hyper Speed Control ? architecture enables
- High Delta V operation (V IN = 75V and V OUT = 0.8V)
- Small output capacitance
30V to 75V voltage input
Adjustable output down to 0.8V
±1% FB accuracy
Any Capacitor ? Stable
- Zero-ESR to high-ESR output capacitors
4A output current capability, up to 90% efficiency
100kHz to 500kHz switching frequency
Internal compensation
Foldback current-limit and “hiccup” mode short-circuit
protection
Thermal shutdown
Supports safe startup into a pre-biased load
–40 ° C to +125 ° C junction temperature range
28-pin 5mm × 6mm MLF ? package
site at: www.micrel.com .
Applications
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Distributed power systems
Communications/networking infrastructure
Set-top box, gateways and routers
Printers, scanners, graphic cards and video cards
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Typical Application
Efficiency (V IN = 48V)
vs. Output Current
100
90
80
70
60
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
50
40
30
20
10
f SW = 250kHz
1.0V
0.8V
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
Hyper Speed Control, SuperSwitcher II and Any Capacitor are trademarks of Micrel, Inc.
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
June 2011
M9999-060311-B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MIC2851012VEV | 制造商:Micrel Inc 功能描述:Evaluation Board for MIC28510 12V |
| MIC28510-12V-EV | 功能描述:MIC28510 Hyper Speed Control?, SuperSwitcher II? DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board 制造商:microchip technology 系列:Hyper Speed Control?，SuperSwitcher II? 零件状态:无货 主要用途:DC/DC，步降 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:12V 电流 - 输出:4A 电压 - 输入:5 V ~ 75 V 稳压器拓扑:降压 频率 - 开关:- 板类型:完全填充 所含物品:板 使用的 IC/零件:MIC28510 标准包装:1 |
| MIC285105VEV | 制造商:Micrel 功能描述:Evaluation Board for MIC28510 5V |
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