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ISL71823ASRH Datasheet

High-Speed Dual Output PWMs

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DATASHEET
IS-1825xSRH, IS-1825BSEH, ISL71823xSRH
Single Event and Total Dose Hardened, High-Speed Dual Output PWMs
FN9065
Rev.7.00
Dec 15, 2017
The IS-1825ASRH, IS-1825BSRH, IS-1825BSEH,
ISL71823ASRH, and ISL71823BSRH are single event
and total dose hardened pulse width modulators designed
to be used in high-frequency switching power supplies in
either voltage or current-mode configurations. These
devices include a precision voltage reference, a low
power start-up circuit, a high-frequency oscillator, a
wide-band error amplifier, and a fast current-limit
comparator.
The IS-1825xSRH and IS-1825xSEH feature dual,
alternating output operating from zero to less than 50%
duty cycle, and the ISL71823xSRH features dual
in-phase output operating from zero to less than 100%
duty cycle. The B versions of the parts test the delay from
clock out to PWM output switching after power has been
applied to the modulator (tPWM) (see Figure 2 on page 9).
The SEH parts are wafer-by-wafer acceptance tested to
50krad(Si) at a low dose rate of <10mrad(Si)/s.
Constructed with the Rad-hard Silicon Gate (RSG)
dielectrically isolated BiCMOS process, these devices
are immune to single-event latch-up and have been
specifically designed to provide a high level of immunity
to single-event transients. All specified parameters are
established and tested for 300krad(Si) total dose
performance.
The devices are offered in a 16 Ld CDIP or a 20 Ld
CDFP and fully specified to across the temperature range
of -50°C to +125°C.
Applications
• Voltage or current mode switching power supplies
• Control of high current MOSFET drivers
• Motor speed and direction control
Features
• Electrically screened to DLA SMD 5962-02511
• QML qualified per MIL-PRF-38535 requirements
• EH version is wafer-by-wafer acceptance tested to
50krad(Si) LDR
• Oscillator frequency: 1MHz (max)
• High output drive current: 1A peak (typ)
• Low startup current: 300µA (max)
• Undervoltage Lockout
• Start threshold: 8.8V (max)
• Stop threshold: 7.6V (min)
• Hysteresis: 300mV (min)
• Pulse-by-pulse current limiting
• Programmable leading edge blanking
• Radiation Hardness
• High Dose Rate (HDR) (50-300rad(Si)/s):
300krad(Si)
• Low Lose Rate (LDR) (0.01rad(Si)/s): 50krad(Si)
• Latch-up immune (dielectrically isolated)
• SEU immune: LET= 35MeV•cm2/mg
Related Literature
• For a full list of related documents, visit our website
IS-1825ASRH, IS-1825BSRH, IS-1825BSEH,
ISL71823ASRH, and ISL71823BSRH product
pages
Part Number
IS-1825ASRH
IS-1825BSRH
IS-1825BSEH
ISL71823ASRH
ISL71823BSRH
Table 1. Key Differences Between Family of Parts
Radiation Hardened Assurance Testing
Dual Outputs
TID HDR Rating
(50-300 rad(Si)/s)
TID LDR Rating
(<10mrad(Si)/s)
Out of Phase
300krad(Si)
-
Out of Phase
300krad(Si)
-
Out of Phase
300krad(Si)
50krad(Si)
In Phase
300krad(Si)
-
In Phase
300krad(Si)
-
Clock-to-PWM
Startup Test
-
Yes
Yes
-
Yes
FN9065 Rev.7.00
Dec 15, 2017
Page 1 of 25


Intersil Electronic Components Datasheet

ISL71823ASRH Datasheet

High-Speed Dual Output PWMs

No Preview Available !

IS-1825xSRH, IS-1825BSEH, ISL71823xSRH
Contents
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. Typical Performance Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. Die and Assembly Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 Metallization Mask Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2 Bond Pad Coordinates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5. Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6. Package Outline Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1 Ceramic Metal Seal Flatpack Packages (Flatpack) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Ceramic Dual-In-Line Metal Seal Packages (SBDIP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
FN9065 Rev.7.00
Dec 15, 2017
Page 2 of 25


Part Number ISL71823ASRH
Description High-Speed Dual Output PWMs
Maker Intersil
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