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参数资料
| 型号： | MIC261203YJL EV |
| 厂商： | Micrel Inc |
| 文件页数： | 1/31页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR MIC261203YJL |
| 标准包装： | 1 |
| 系列： | HyperLight Load®, SuperSwitcher IIG™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，隔离 |
| 输出电压： | 5V |
| 电流 - 输出： | 12A |
| 输入电压： | 5.5 ~ 28 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 600kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MIC261203 |
| 其它名称： | 576-4014 |
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MIC261203
28V, 12A Hyper Light Load ?
Synchronous DC/DC Buck Regulator
SuperSwitcher IIG ?
General Description
Features
The Micrel MIC261203 is a constant-frequency,
synchronous DC/DC buck regulator featuring adaptive on-
time control architecture. The MIC261203 operates over a
supply range of 4.5V to 28V. It has an internal linear
regulator which provides a regulated 5V to power the
internal control circuitry. MIC261203 operates at a
constant 600kHz switching frequency in continuous-
conduction mode and can be used to provide up to 12A of
output current. The output voltage is adjustable down to
0.8V.
Micrel’s Hyper Light Load ? architecture provides the same
high-efficiency and ultra-fast transient response as the
Hyper Speed Control ? architecture under medium to heavy
loads, but also maintains high efficiency under light load
conditions by transitioning to variable frequency,
discontinuous mode operation.
The MIC261203 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, thermal shutdown, internal
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Hyper Light Load ? efficiency – up to 80% at 10mA
Hyper Speed Control ? architecture enables
? High Delta V operation (V IN = 28V and V OUT = 0.8V)
? Small output capacitance
Input voltage range: 4.5V to 28V
Output current up to 12A
Up to 95% efficiency
Adjustable output voltage from 0.8V to 5.5V
±1% FB accuracy
Any Capacitor TM stable ? zero-to-high ESR
600kHz switching frequency
Power Good (PG) output
Foldback current-limit and “hiccup” mode short-circuit
protection
Safe start-up into pre-biased loads
5mm x 6mm MLF ? package
–40 ° C to +125 ° C junction temperature range
soft start to reduce the inrush current, foldback current-
limit and “hiccup” mode short-circuit protection. The
Applications
MIC261203 includes a Power Good (PG) output to allow
simple sequencing.
All support documentation can be found on Micrel’s web
site at: www.micrel.com .
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Distributed power systems
Telecom/networking infrastructure
Printers, scanners, graphic cards and video cards
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Typical Application
Efficiency (V IN = 12V)
vs. Output Current
100
95
90
85
80
75
70
65
60
55
50
V IN = 12V
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
0
3
6
9
12
15
OUTPUT CURRENT (A)
Hyper Speed Control, Hyper Light Load, 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
July 2011
M9999-071311-A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC261203YJLTR | 制造商:Micrel 功能描述:DC DC Regulator 28V 12A 28Pin 5x6mm MLF |
| MIC261203YJL-TR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 12A 28-PowerVQFN Variant, 28-MLF? 制造商:microchip technology 系列:HyperLight Load?，SuperSwitcher IIG?? 包装:剪切带（CT） 零件状态:有效 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）:4.5V 电压 - 输入（最大值）:28V 电压 - 输出（最小值/固定）:0.8V 电压 - 输出（最大值）:5.5V 电流 - 输出:12A 频率 - 开关:600kHz 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 |
| MIC261203-ZAYJL TR | 制造商:Micrel Inc 功能描述:IC REG BUCK SYNC ADJ 12A 28MLF |
| MIC2619YD6 | 制造商:Micrel 功能描述:1.2MHz PWM Boost Converter with OVP |
| MIC2619YD6 TR | 功能描述:直流/直流开关转换器 1.2MHz PWM Boost Converter with OVP in Thin SOT-23 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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