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| 型号： | LT3071MPUFD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A 28QFN |
| 标准包装： | 73 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.8 V ~ 1.8 V |
| 输入电压： | 0.95 V ~ 3 V |
| 电压 - 压降（标准）： | 0.085V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 电流 - 限制（最小）： | 5.1A |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（4x5） |
| 包装： | 管件 |
| 其它名称： | LT3071MPUFD LT3071MPUFD-ND |
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LT3071
5A, Low Noise,
Programmable Output, 85mV
Dropout Linear Regulator
with Analog Margining
Output Current: 5A
Dropout Voltage: 85mV Typical
Digitally Programmable V OUT : 0.8V to 1.8V
Analog Output Margining: ±10% Range
Low Output Noise: 25μV RMS (10Hz to 100kHz)
Parallel Multiple Devices for 10A or More
Precision Current Limit: ±20%
Output Current Monitor: I MON = I OUT /2500
±1% Accuracy Over Line, Load and Temperature
Stable with Low ESR Ceramic Output Capacitors
High Frequency PSRR: 30dB at 1MHz
Enable Function Turns Output On/Off
VIOC Pin Controls Buck Converter to Maintain Low
PWRGD/UVLO/Thermal Shutdown Flag
Current Limit with Foldback Protection
Thermal Shutdown
28-Lead (4mm × 5mm × 0.75mm) QFN Package
FPGA and DSP Supplies
ASIC and Microprocessor Supplies
Servers and Storage Devices
Post Buck Regulation and Supply Isolation
FEATURES
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(15μF Minimum)
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Power Dissipation and Optimize Efficiency
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APPLICATIONS
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TYPICAL APPLICATION
DESCRIPTION
The LT ? 3071 is a low voltage, UltraFast? transient re-
sponse linear regulator. The device supplies up to 5A of
output current with a typical dropout voltage of 85mV.
A 0.01μF reference bypass capacitor decreases output
voltage noise to 25μV RMS . The LT3071’s high bandwidth
permits the use of low ESR ceramic capacitors, saving
bulk capacitance and cost. The LT3071’s features make
it ideal for high performance FPGAs, microprocessors or
sensitive communication supply applications.
Output voltage is digitally selectable in 50mV increments
over a 0.8V to 1.8V range. An analog margining function
allows the user to adjust system output voltage over a
continuous ±10% range. The IC incorporates a unique
tracking function to control a buck regulator powering
the LT3071’s input. This tracking function drives the buck
regulator to maintain the LT3071’s input voltage to V OUT
+ 300mV, minimizing power dissipation.
Internal protection includes UVLO, reverse-current protec-
tion, precision current limiting with power foldback and
thermal shutdown. The LT3071 regulator is available in a
thermally enhanced 28-lead, 4mm × 5mm QFN package.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. UltraFast and VLDO are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Patents pending.
Dropout Voltage
V BIAS
2.2V TO 3.6V
2.2μF
0.9V, 5A Regulator
50k
PWRGD
150
120
V IN = V OUT(NOMINAL)
0.01μF
V IN
1.2V
330μF
1nF
NC
BIAS
IN PWRGD
EN SENSE
V O0 LT3071 OUT
V O1
V O2
MARGA I MON
VIOC REF/BYP
GND
2.2μF* 4.7μF*
*X5R OR X7R CAPACITORS
1k
V OUT
0.9V
10μF* 5A
V MON
2V AT 5A
FULL SCALE
90
60
30
0
0
1
2
V OUT = 1.8V
V BIAS = 3.3V
V OUT = 0.8V
V BIAS = 2.5V
3 4
5
3071 TA01a
For more information www.linear.com/3071
OUTPUT CURRENT (A)
3071 TA01b
3071fb
1
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相关代理商/技术参数 |
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|---|---|
| LT3071MPUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
| LT3071MPUFD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining |
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