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ISL73051ASEH PDF预览

ISL73051ASEH

更新时间： 2024-11-19 14:58:19
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
22页 1212K
描述
3A, Radiation Hardened, Positive, Ultra-Low Dropout Regulator

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ISL73051ASEH 数据手册

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DATASHEET  
ISL75051ASEH, ISL73051ASEH  
3A, Radiation Hardened, Positive, Ultra-Low Dropout Regulator  
FN8964  
Rev.3.00  
May 16, 2019  
The ISL75051ASEH and ISL73051ASEH are radiation  
hardened low-voltage, high-current, single-output LDOs  
Features  
• DLA SMD 5962-11212  
specified for up to 3.0A of continuous output current.  
These devices operate across an input voltage range of  
2.2V to 6.0V and can provide output voltages of 0.8V to  
5.0V adjustable, based on the resistor divider setting.  
Dropout voltages as low as 65mV can be achieved using  
the device.  
• Output current up to 3.0A at T = +150°C  
J
• Output accuracy ±1.5% over MIL temperature range  
• Ultra low dropout:  
• 65mV (typical) dropout at 1.0A  
The OCP pin allows the short-circuit output current limit  
threshold to be programmed by a resistor from the OCP  
pin to GND. The OCP setting range is 0.5A minimum to  
8.5A maximum. The resistor sets the constant current  
threshold for the output under fault conditions. The  
thermal shutdown disables the output if the device  
temperature exceeds the specified value. It subsequently  
enters an ON/OFF cycle until the fault is removed. The  
ENABLE feature allows the part to be placed into a low  
current shutdown mode that typically draws about 10µA.  
• 225mV (typical) dropout at 3.0A  
• SET mitigation with no added filtering/diodes  
• Input supply range: 2.2V to 6.0V  
• Fast load transient response  
• Shutdown current of 10µA (typical)  
• Output adjustable using external resistors  
• PSRR 66dB (typical) at 1kHz  
• Enable and PGood features  
These devices are optimized for fast transient response and  
Single Event Effects (SEE). This reduces the magnitude of  
Single Event Transients (SET) seen on the output.  
Additional protection diodes and filters are not needed.  
These devices are stable with tantalum capacitors as low as  
47µF and provide excellent regulation all the way from no  
load to full load. Programmable soft-start allows the user  
to program the inrush current by using the decoupling  
capacitor value on the BYP pin.  
• Programmable soft-start/inrush current limiting  
• Over-temp shutdown and programmable OCP limits  
• Stable with 47µF min tantalum capacitor  
• Radiation hardness (ISL75051ASEH only)  
• High dose rate (50-300rad(Si)/s): 100krad(Si)  
• Low dose rate (≤0.01rad(Si)/s): 50krad(Si)  
• Radiation hardness (ISL73051ASEH only)  
• Low dose rate (≤0.01rad(Si)/s): 50krad(Si)  
Applications  
• LDO regulator for space applications  
• DSP, FPGA, and µP core power supplies  
• Post-regulation of switched mode power supplies  
• Down-hole drilling  
Related Literature  
• For a full list of related documents, visit our website:  
• ISL75051ASEH, ISL73051ASEH device pages  
0.30  
EN  
+150°C  
EN  
BYP  
ADJ  
ROCP  
0.25  
0.1µF  
OCP  
+125°C  
ISL75051ASEH  
VIN  
VOUT  
220µF  
0.20  
VIN  
PG  
VOUT  
GND  
R
1
0.15  
0.1µF  
0.1µF  
220µF  
+25°C  
2.67k  
VIN  
0.10  
0.05  
0.00  
4.7nF  
100pF  
R
PG  
2
0.00  
0.50  
1.00  
1.50  
2.00  
(A)  
2.50  
3.00  
3.50  
I
OUT  
Figure 2. Dropout vs I  
Figure 1. Typical Application  
OUT  
FN8964 Rev.3.00  
May 16, 2019  
Page 1 of 22  
1234567...22

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