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PDF ISL70001ASEH Data sheet ( Hoja de datos )
| Número de pieza | ISL70001ASEH | |
| Descripción | Rad Hard and SEE Hard 6A Synchronous Buck Regulator | |
| Fabricantes | Intersil | |
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Rad Hard and SEE Hard 6A Synchronous Buck Regulator
ISL70001ASEH
The ISL70001ASEH 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 TJ < +145°C.
The ISL70001ASEH utilizes peak current-mode control for
excellent output load transient response and features integrated
compensation and switches at a fixed frequency of 1MHz to
reduce component size and count. In application where two POLs
are needed, two ISL70001ASEH devices can be synchronized
180° out-of-phase to reduce the overall input RMS ripple current.
The internal synchronous power switches are optimized for high
efficiency and good thermal performance.
The ISL70001ASEH incorporates fault protection for the
regulator. The protection circuits include input undervoltage,
output undervoltage, and output overcurrent.
High integration and class leading radiation tolerance makes
the ISL70001ASEH 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.
Applications
• FPGA, CPLD, DSP, CPU Core or I/O Voltages
• Low-Voltage, High-Density Distributed Power Systems
Related Literature
• ISL70001ASEHEV1Z Evaluation Board, AN1842
Features
• ±1% Reference Voltage Over Line, Load, Temperature and
Radiation
• Current Mode Control for Excellent Dynamic Response
• Full Mil-Temp Range Operation (TA = -55°C to +125°C)
• 50% Lower Shutdown Supply Current than the ISL70001SEH
• Available in a thermally enhanced heatsink package - R48.B
• Highly Efficient: 94% Peak Efficiency
• Operates from 3V to 5.5V Supply
• Adjustable Output Voltage
- Two External Resistors Set VOUT from 0.8V to ~85% of VIN
• Bi-directional SYNC Pin Allows Two Devices to be Synchronized
180° Out-of-Phase
• Power-Good Output Voltage Monitor
• Adjustable Analog Soft-Start
• Input Undervoltage, Output Undervoltage and Output
Overcurrent Protection
• Electrically Screened to DLA SMD 5962-09225
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Hardness
- Total Dose [50-300rad(Si)/s] . . . . . . . . . . . . . . 100krad(Si)
http://www.DataSheet4U.net/
- Total Dose [<10mrad(Si)/s] . . . . . . . . . . . . . . 100krad(Si)*
* Product capability established by initial characterization. The
EH version is acceptance tested on a wafer-by-wafer basis to
50krad(Si) at low dose rate.
• SEE Hardness
- SEL and SEB LETeff . . . . . . . . . . . . 86.4MeV/mg/cm2 min
- SEFI X-section (LETeff = 86.4MeV/mg/cm2) 1.4 x 10-6 cm2
max
- SET LETeff (< 1 Pulse Perturbation) 86.4MeV/mg/cm2 min
5V Supply
ISL70001ASEH
SYNCH
ISL75051SEH
ISL70001ASEH
SYNCH
CORE
AUX
RAD TOLERANT
FPGA
I/O
FIGURE 1. TYPICAL APPLICATION
100
95
90
85
1.5V
1.8V
80
2.5V
3.3V
1.2V
75
70
012345
LOAD CURRENT (A)
FIGURE 2. EFFICIENCY 5V INPUT, TA = +25°C
6
May 22, 2013
FN8365.0
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 LLC 2013. 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.
datasheet pdf - http://www.DataSheet4U.net/
1 page  
ISL70001ASEH
Typical Application Schematic
PVIN1
5V
PVIN2
100µF
1µF
PVIN3
PVIN4
PVIN5
1µF
PVIN6
1 AVDD
1
VSENSE
1µF
1µF
AGND
DVDD
DGND
EN
10nF
M/S
PORSEL
TDI
TDO
ZAP
ISL70001ASEH
http://www.DataSheet4U.net/
LX1
LX2
LX3
LX4
LX5
1µH
LX6
20V
3A
FB
0V TO 5.5V
470µF
1kΩ
1.8V
6A
499Ω
PGOOD
10nF
SYNC
REF
220nF
SS
100nF
FIGURE 3. 5V INPUT SUPPLY VOLTAGE WITH MASTER MODE SYNCHRONIZATION
5 FN8365.0
May 22, 2013
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
ISL70001ASEH
Typical Operating Performance
Unless otherwise noted, TA = +25°C, VIN = 5V, EN = 5V, L = 1.0µH, CIN = 4x47µF, COUT = 10x100µF, VOUT = 1.8V, IOUT = 0A to 6A. (Continued)
EN 2V/DIV
VOUT 1V/DIV
IL 1A/DIV
PGOOD 5V/DIV
EN 2V/DIV
VOUT 1V/DIV
IL 2A/DIV
PGOOD 5V/DIV
FIGURE 11. SOFT-START WITH NO LOAD
FIGURE 12. SOFT-START WITH FULL LOAD
LX PULSE 5V/DIV
VOUT 20mV/DIV
IL 1A/DIV
FIGURE 13. STEADY STATE OPERATION WITH NO LOAD
VOUT 20mV/DIV
IL 2A/DIV
http://www.DataSheet4U.net/
LX PULSE 5V/DIV
IL 2A/DIV
VOUT 20mV/DIV
FIGURE 14. STEADY STATE OPERATION WITH FULL LOAD
VOUT 50mV/DIV
IL 2A/DIV
FIGURE 15. LOAD TRANSIENT 50%
11
FIGURE 16. LOAD TRANSIENT 100%
FN8365.0
May 22, 2013
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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| PDF Descargar | [ Datasheet ISL70001ASEH.PDF ] | |
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