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ISL70001SRHF

Description
Rad Hard and SEE Hard 6A Synchronous Buck Regulator
File Size486KB,17 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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ISL70001SRHF Overview

Rad Hard and SEE Hard 6A Synchronous Buck Regulator

Rad Hard and SEE Hard 6A Synchronous Buck Regulator
ISL70001SEH
The ISL70001SEH is a radiation hardened and SEE hardened
high efficiency monolithic synchronous buck regulator with
integrated MOSFETs. This single chip power solution operates
over an input voltage range of 3V to 5.5V and provides a tightly
regulated output voltage that is externally adjustable from 0.8V
to ~85% of the input voltage. Output load current capacity is 6A
for T
J
< +145°C
.
High integration and class leading radiation tolerance makes
the ISL70001SEH an ideal choice to power many of today’s
small form factor applications. Two devices can be
synchronized to provide a complete power solution for large
scale digital ICs, like field programmable gate arrays (FPGAs),
that require separate core and I/O voltages.
Features
• ±1% Reference Voltage Over Line, Load, Temperature and
Radiation
• Current Mode Control for Excellent Dynamic Response
• Full Mil-Temp Range Operation (T
A
= -55°C to +125°C)
• High Efficiency > 90%
• Fixed 1MHz Operating Frequency
• Operates from 3V to 5.5V Supply
• Adjustable Output Voltage
- Two External Resistors Set V
OUT
from 0.8V to ~85% of V
IN
• Bi-directional SYNC Pin Allows Two Devices to be Synchronized
180
°
Out-of-Phase
• Device Enable with Comparator Type Input
• Power-Good Output Voltage Monitor
• Adjustable Analog Soft-Start
• Input Undervoltage, Output Undervoltage and Output
Overcurrent Protection
• Starts Into Pre-Biased Load
• Electrically Screened to DLA SMD 5962-09225
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Hardness
- Total Dose [50-300rad(Si)/s] . . . . . . . . . . .100krad(Si) min
- Total Dose [<10mrad(Si)/s] . . . . . . . . . . . . .50krad(Si) min
• SEE Hardness
- SEL and SEB LET
eff
. . . . . . . . . . . . 86.4MeV/mg/cm
2
min
- SEFI X-section (LET
eff
= 86.4MeV/mg/cm
2
) 1.4 x 10
-6
cm
2
max
- SET LET
eff
(< 1 Pulse Perturbation) 86.4MeV/mg/cm
2
min
Applications
• FPGA, CPLD, DSP, CPU Core or I/O Voltages
• Low-Voltage, High-Density Distributed Power Systems
Related Literature
• ISL70001SRHEVAL1Z Evaluation Board,
AN1518
Specifications for Rad Hard QML devices are controlled by the
Defense Logistics Agency Land and Maritime (DLA). The SMD
numbers listed in the Ordering Information table on page 2 must
be used when ordering.
Detailed Electrical Specifications for these devices are contained
in
SMD 5962-09225.
This link is also available on the
ISL70001SEH device information page
on the Intersil web site.
95
90
5V SUPPLY
SYNCH
EFFICIENCY (%)
ISL70001SEH
CORE
85
RAD HARD LDO
AUX
RAD TOLERANT
FPGA
80
75
ISL70001SEH
I/O
70
0
1
2
3
4
5
6
LOAD CURRENT (A)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. EFFICIENCY 5V INPUT TO 3.3V OUTPUT, T
A
= +25°C
November 30, 2011
FN7956.0
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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