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MIC49150-1.2BMM 参数 Datasheet PDF下载

MIC49150-1.2BMM图片预览
型号: MIC49150-1.2BMM
PDF下载: 下载PDF文件 查看货源
内容描述: 1.5A低压LDO稳压器瓦特/双输入电压 [1.5A Low Voltage LDO Regulator w/Dual Input Voltages]
分类和应用: 稳压器
文件页数/大小: 13 页 / 340 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC49150
1.5A Low Voltage LDO Regulator
w/Dual Input Voltages
General Description
The MIC49150 is a high-bandwidth, low-dropout, 1.5A volt-
age regulator ideal for powering core voltages of low-
power microprocessors. The MIC49150 implements a dual
supply configuration allowing for very low output
impedance and very fast transient response.
The MIC49150 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
6.5V and the bias supply requires between 3V and 6.5V
for proper operation. The MIC49150 offers
fixed
output
voltages from 0.9V to 1.8V and adjustable output voltages
down to 0.9V.
The MIC49150 requires a minimum of output capacitance
for stability, working optimally with small ceramic
capacitors.
The MIC49150 is available in an 8-pin power MSOP pack-
age and a 5-pin S-Pak. Its operating temperature range is
–40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
Input Voltage Range:
– V
IN
: 1.4V to 6.5V
– V
BIAS
: 3.0V to 6.5V
Stable with 1µF ceramic capacitor
±1% initial tolerance
Maximum dropout voltage (V
IN
–V
OUT
) of 500mV
over temperature
Adjustable output voltage down to 0.9V
Ultra fast transient response (Up to 10MHz bandwidth)
Excellent line and load regulation specifications
Logic controlled shutdown option
Thermal shutdown and current limit protection
Power MSOP-8 and S-Pak packages
Junction temperature range: –40°C to 125°C
Applications
Graphics processors
PC add-in cards
Microprocessor core voltage supply
Low voltage digital ICs
High efficiency linear power supplies
SMPS post regulators
Typical Application
V
IN
= 1.8V
V
BIAS
= 3.3V
C
BIAS
= 1µF
Ceramic
C
IN
= 1µF
Ceramic
MIC49150BR
IN
OUT
BIAS
ADJ
R2 C
OUT
= 1µF
Ceramic
V
OUT
= 1.0V
R1
GND
Low Voltage,
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
November 2006
1
M9999-111306