®
HS-1825ARH
Data Sheet
September 25, 2008
FN4561.8
Radiation Hardened High-Speed, Dual
Output PWM
The Radiation Hardened HS-1825ARH Pulse Width
Modulator is designed to be used in high frequency
switched-mode power supplies and can be used in either
current-mode or voltage-mode. It is well suited for
single-ended boost converter applications.
Device features include a precision voltage reference, low
power start-up circuit, high frequency oscillator, wide-band
error amplifier, and fast current-limit comparator. The use of
proprietary process capabilities and unique design
techniques results in fast propagation delay times and high
output current over a wide range of output voltages.
Constructed with the Intersil Rad Hard Silicon Gate (RSG)
Dielectric Isolation BiCMOS process, the HS-1825ARH has
been specifically designed to provide highly reliable
performance when exposed to harsh radiation
environments.
Specifications for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed below must be used when ordering.
Detailed Electrical Specifications for the HS-1825ARH
are contained in SMD 5962-99558. That document may
be easily downloaded from our website.
www.intersil.com/
Features
• Electrically Screened to DESC SMD # 5962-99558
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Environment
- Maximum Total Dose . . . . . . . . . . . . . . . . 300 krad(SI)
- Vertical Architecture Provides Low Dose Rate Immunity
- DI RSG Process Provides Latch-Up Immunity
• Low Start-Up Current . . . . . . . . . . . . . . . . . . . 100µA (Typ)
• Fast Propagation Delay . . . . . . . . . . . . . . . . . . 80ns (Typ)
• 12V to 30V Operation
• 1A (Peak) Dual Output Drive Capability
• 5.1V Reference
• Undervoltage Lockout
• Programmable Soft-Start
• Switching Frequencies to 500kHz
• Latched Overcurrent Comparator with Full Cycle Restart
• Programmable Leading Edge Blanking Circuit
Applications
• Current or Voltage Mode Switching Power Supplies
• Motor Speed and Direction Control
Pinout
HS-1825ARH
SBDIP (CDIP2-T16) AND FLATPACK (CDFP4-F16)
TOP VIEW
INV 1
NON-INV 2
E/A OUT 3
CLOCK 4
RT 5
CT 6
RAMP 7
SOFT START 8
16 VREF 5.1V
15 V
CC
14 OUTPUT B
13 VC
12 POWER GND
11 OUTPUT A
10 GND
9 ILIM/SD
NOTE: Grounding the Soft-Start pin does not inhibit the outputs. The
outputs may be inhibited by applying >1.26V to the ILIM/SD pin.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002, 2005, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
HS-1825ARH
Die Characteristics
DIE DIMENSIONS
4710µm x 3570µm (185 mils x 140 mils)
Thickness: 483µm ±25.4µm (19 mils ±1 mil)
INTERFACE MATERIALS
Glassivation
Type: PSG (Phosphorous Silicon Glass)
Thickness: 8.0k
Å
±1.0k
Å
Top Metallization
Type: ALSiCu
Thickness: 16.0k
Å
±2k
Å
Substrate
Radiation Hardened Silicon Gate,
Dielectric Isolation
Backside Finish
Silicon
ASSEMBLY RELATED INFORMATION
Substrate Potential
Unbiased (DI)
ADDITIONAL INFORMATION
Worst Case Current Density
<2.0 x 10
5
A/cm
2
Transistor Count
225
HS-1825ARH
Metallization Mask Layout
RT (5)
(4) CLK/LEB
(3) EAOUT
CT (6)
(2) IN+
RAMP (7)
(1) IN-
SS (8)
(16) V
REF
ILIM (9)
OSCGND
(NOTE 1)
GND (10)
(14) OUTB
OUTA (11)
(12) PGND
(NOTE 2)
PGND (12)
(NOTE 2)
VC (13)
(NOTE 2)
(13) VC
(NOTE 2)
(15) V
CC
NOTES:
1. This is the oscillator ground (OSCGND) bond pad and must be
connected to GND.
2. PGND and VC each require two bond pad connections.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
3
FN4561.8
September 25, 2008
嵌入式系统
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