参数资料
| 型号： | MIC49500WU TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A TO-263-7 |
| 标准包装： | 750 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.7 V ~ 6 V |
| 输入电压： | 1.4 V ~ 6 V |
| 电压 - 压降（标准）： | 0.29V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 电流 - 限制（最小）： | 5.5A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-8，D²Pak（7 引线+接片），TO-263CA |
| 供应商设备封装： | TO-263-7 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC49500WUTR MIC49500WUTR-ND |
MIC49500
5A Dual Supply, Low Voltage,
High Bandwidth LDO
General Description
The MIC49500 is an ultra-high-bandwidth, low-
dropout, 5.0A voltage regulator ideal for powering
core voltages of low-voltage microprocessors. The
MIC49500 implements a dual supply configuration
allowing for very low output impedance and very fast
transient response.
The MIC49500 requires a bias input supply and a
main input supply, allowing for ultra-low input voltages
on the main supply rail. The input supply operates
from 1.4V to 6V and the bias supply requires between
3V and 6V for proper operation. The MIC49500 can
regulate to an output voltage as low as 0.7V, making it
an ideal product for low-voltage to low-voltage
conversion.
The MIC49500 requires a minimum of output
capacitance for stability, working optimally with any
type of capacitor, including small ceramic capacitors.
Available in fixed output voltages from 0.9V to 1.8V
and adjustable output voltages down to 0.7V, the
MIC49500 comes in both 7-pin S-Pak and TO-263
packages. The MIC49500 is rated to the full operating
temperature range of –40°C to 125°C junction
temperature.
Features
? Input voltage range:
– V IN : 1.4V to 6V
– V BIAS : 3.0V to 6V
? Stable with 10μF ceramic output capacitor
? +1.0% initial output tolerance
? Maximum dropout (V IN – V OUT ) is 500mV over
temperature
? Adjustable output voltage down to 0.7V
? Ultra Fast Transient Response (Up to 10MHz
bandwidth)
? Excellent line and load regulation specifications
? Logic controlled shutdown option
? Thermal shutdown and current limit protection
? Thin 7-pin S-Pak package
? TO-263 7-pin package
? –40°C to +125°C operating junction temperature
range
Applications
? ASIC Core Voltage Regulator
? PLD/FPGA Core Power Supply
Typical Application
?
?
Linear Point-of-Load Conversion
High Speed Post-Regulator
V IN = 2.0V
MIC49500WR
IN OUT
V OUT = 1.0V
Load Transient
OFF
ON
EN
R1
V BIAS = 3.1V
C BIAS = 1μF
Ceramic
BIAS
GND
ADJ
R2
C OUT = 10μF
Ceramic
5A
V OUT = 1.8V
V IN = 2.8V
V BIAS = 3.9V
C OUT = C BIAS = 10μF
C IN = 1μF
Ceramic
Low Voltage,
0A
Time (10μs/div)
Fast Transient Response Regulator
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 2007
M9999-071307
相关PDF资料 |
PDF描述 |
|---|---|
| MIC49500-1.2WU TR | IC REG LDO 1.2V 5A TO-263-7 |
| MIC49500-1.2WR TR | IC REG LDO 1.2V 5A SPAK-7 |
| MIC49500-0.9WU TR | IC REG LDO 0.9V 5A TO-263-7 |
| MIC49500-0.9WR TR | IC REG LDO 0.9V 5A SPAK-7 |
| LT1020ISW#TRPBF | IC REG LDO ADJ 125MA 16-SOIC |
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