DATASHEET
Radiation and SEE Tolerant 3V to 13.2V, 9A Buck
Regulator
ISL70003ASEH
Features
The ISL70003ASEH is an improved version of the ISL70003SEH
regulator with both tighter load regulation (<0.3% typical) and a
higher output current rating of 9A. Operating over an input voltage
• Acceptance tested to 50krad(Si) (LDR) wafer-by-wafer
• ±1% reference voltage over line, temperature and radiation
• Integrated MOSFETs 31mΩPFET/21mΩ NFET
range of 3.0V to 13.2V, with integrated low r
MOSFETs
DS(ON)
- 95% peak efficiency
makes this monolithic solution highly efficient. Also, a tightly
regulated output voltage is possible, which is externally
adjustable from 0.6V to ~90% of the input voltage. Continuous
• Externally adjustable loop compensation
• Supports DDR applications (V tracks V
/2)
voltage
REF
output load current capability is 9A for T ≤+125°C and 6A for
TT DDQ
J
T ≤+150°C.
- Buffer amplifier for generating V
- 3A current sinking capability
J
The ISL70003ASEH uses voltage mode control architecture
with feed-forward and switches at a selectable frequency of
500kHz or 300kHz. Loop compensation is externally
adjustable to allow for an optimum balance between stability
and output dynamic performance.
• Grounded lid eliminates charge build up
• IMON pin for output current monitoring
• Adjustable analog soft-start
• Diode emulation for increased efficiency at light loads
• 500kHz or 300kHz operating frequency
• Monotonic start-up into prebiased load
• Full military temperature range operation
The device features two logic-level disable inputs that can be
used to inhibit pulses on the phase (LXx) pins in order to
maximize efficiency based on the load current. The
ISL70003ASEH also supports DDR applications and contains a
buffer amplifier for generating the V
voltage.
REF
- T = -55°C to +125°C
A
High integration, best in class radiation performance and a
feature filled design make the ISL70003ASEH an ideal choice
to power many of todays small form factor applications.
- T = -55°C to +150°C
J
• Radiation tolerance
- High dose rate (50-300rad(Si)/s). . . . . . . . . . . 100krad(Si)
All existing ISL70003SEH supporting collateral is relevant to
the ISL70003ASEH and can be used as such.
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . 100krad(Si)*
* Limit established by characterization.
Applications
• SEE hardness
2
• FPGA, CPLD, DSP, CPU core and I/O supply voltages
- SEB and SEL LET . . . . . . . . . . . . . . . . 86.4MeV•cm /mg
TH
- SET at LET 86.4MeV•cm /mg . . . . . . . . . . . < ±3% ΔV
2
• DDR memory supply voltages
OUT
2
- SEFI LET . . . . . . . . . . . . . . . . . . . . . . . . . 60MeV•cm /mg
TH
• Electrically screened to DLA SMD 5962-14203
• Low-voltage, high-density distributed power systems
Related Literature
• AN1897, “ISL70003SEHEV1Z Evaluation Board”
0.3
• AN1915, “ISL70003SEH iSim:PE Model”
0.2
-55°C
• TR009, “Single Event Effects (SEE) Testing of the
ISL70003ASEH POL BUCK Regulator”
+125°C
+25°C
0.1
0.0
• AN1924, “Total Dose Testing of the ISL70003SEH Radiation
Hardened Point Of Load Regulator”
-0.1
-0.2
-0.3
• TB502, “High Power ISL70003ASEH High Temperature
Operating Life (HTOL) and Overcurrent Abuse“
+85°C
• UG046, “ISL70003ASEHEV2Z Evaluation Board User Guide”
0
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 1. TYPICAL LOAD REGULATION, V = 12V, V
IN
= 3.3V,
OUT
f
= 500kHz
SW
August 5, 2015
FN8746.0
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 2015. 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.
1
5秒后页面跳转
解析BAV99LT1G手册：参数分析、替换型号推荐
解读BSS138PW数据手册：产品特性、电气参数及替换型号推荐
CR2032资料手册解读：参数分析、替换型号推荐
CDSOT23-SM712参数分析、替代型号推荐
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
