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5962R1121201VXC

Description
3A, Rad Hard, Positive, Ultra Low Dropout Regulator
File Size901KB,15 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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5962R1121201VXC Overview

3A, Rad Hard, Positive, Ultra Low Dropout Regulator

3A, Rad Hard, Positive, Ultra Low Dropout Regulator
ISL75051SRH
The ISL75051SRH is a radiation hardened low-voltage,
high-current, single-output LDO specified for up to 3.0A of
continuous output current. These devices operate over an input
voltage range of 2.2V to 6.0V and are capable of providing
output voltages of 0.8V to 5.0V adjustable based on resistor
divider setting. Dropout voltages as low as 65mV can be
realized using the device.
The OCP pin allows the short circuit output current limit
threshold to be programmed by means of a resistor from the
OCP pin to GND. The OCP setting range is from 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 1
µ
A. When enabled, the device operates
with a typical low ground current of 11mA, which provides for
operation with low quiescent power consumption.
The device is optimized for fast transient response and single
event effects. This reduces the magnitude of SET seen on the
output. Additional protection diodes and filters are not needed.
The device is stable with tantalum capacitors as low as 47µF
and provides excellent regulation all the way from no load to
full load. Programmable soft-start allows the user to program
the inrush current by means of the decoupling capacitor value
used on the BYP pin.
Features
DLA SMD#5962-11212
• Output Current Up to 3.0A at T
J
= 150°C
• Output Accuracy ±1.5% over MIL Temp Range
• Ultra Low Dropout:
- 65mV Typ Dropout at 1.0A
- 225mV Typ Dropout at 3.0A
• Noise of 100µV
RMS
from 300Hz to 300kHz
• SET Mitigation with No Added Filtering/Diodes
• Input Supply Range: 2.2V to 6.0V
• Fast Load Transient Response
• Shutdown Current of 1µA Typ
• Output Adjustable Using External Resistors
• PSRR 66dB Typ @ 1kHz
• Enable and PGood Feature
• Programmable Soft-start/Inrush Current Limiting
• Adjustable Overcurrent Limit from 0.5A to 8.5A
• Over-temperature Shutdown
• Stable with 47µF Min Tantalum Capacitor
• 18 Ld Ceramic Flatpack Package
• Radiation Environment
- High Dose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 krad(Si)
- SET/SEL/SEB . . . . . . . . . . . . . . . . . . . . . . . .86 MeV
cm
2
/mg
Applications
• LDO Regulator for Space Application
• DSP, FPGA and µP Core Power Supplies
• Post-regulation of Switched Mode Power Supplies
• Down-hole Drilling
EN
0.30
OCP
ADJ
ISL75051SRH
VIN
PG
220uF
0.1uF
VIN
2.67k
VOUT
GND
R1
0.1uF
220uF
0.1uF
VOUT
DROPOUT VOLTAGE (V)
ROCP
VIN
EN
BYP
0.25
0.20
0.15
0.10
0.05
0.00
0.00
+150°C
+125°C
+25°C
4.7n
PG
R2
100pF
0.50
1.00
1.50
2.00
2.50
3.00
3.50
I
OUT
(A)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. DROPOUT vs I
OUT
November 4, 2011
FN7610.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

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