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UC1846-SP датащи(PDF) 1 Page - Texas Instruments

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номер детали UC1846-SP
подробное описание детали  Class-V, Radiation Hardened PWM Controller
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1846-SP датащи(HTML) 1 Page - Texas Instruments

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
UC1846-SP
SLUS871D – JANUARY 2009 – REVISED DECEMBER 2016
UC1846-SP Class-V, Radiation Hardened PWM Controller
1
1 Features
1
QML-V Qualified, SMD 5962-86806
5962P8680603VxA:
Radiation Hardness Assurance (RHA) up to
30-krad(Si) Total Ionizing Dose (TID)
Passes Functional and Specified Post-
Radiation Parametric Limits at 45 krad at LDR
(10 mrad(Si)/s) per 1.5× Over Test as Defined
in MIL-STD-883 Test Method 1019.9
Paragraph 3.13.3.b
Exhibits Low-Dose Rate Sensitivity but
Remains Within the Pre-Radiation Electrical
Limits at 30-krad Total Dose Level, as Allowed
by MIL-STD-883, TM1019
Automatic Feed-Forward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull
Configuration
Enhanced Load Response Characteristics
Parallel-Operation Capability for Modular Power
Systems
Differential Current-Sense Amplifier With Wide
Common-Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-Pole Outputs
±1% Bandgap Reference
Undervoltage Lockout (UVLO)
Soft-Start Capability
Shutdown Terminal
500-kHz Operation
2 Applications
DC-DC Converters
Satellite Buses and Payloads
Space Launch Vehicles
Undersea Cabling
Available in Military Temperature Range (–55°C to
125°C)
Supports Various Topologies:
Flyback, Forward, Buck, Boost
Push-Pull, Half-Bridge, Full Bridge With
External Interface Circuit
3 Description
The UC1846-SP control devices provide all of the
necessary features to implement fixed frequency,
current mode control schemes while maintaining a
minimum
external
parts
count.
The
superior
performance of this technique can be measured in
improved line regulation, enhanced load response
characteristics,
and
a
simpler,
easier-to-design
control loop. Topological advantages include inherent
pulse-by-pulse current limiting capability, automatic
symmetry correction for push-pull converters, and the
ability to parallel power modules while maintaining
equal current sharing.
Protection
circuitry
includes
built-in
UVLO
and
programmable current limit in addition to soft-start
capability. A shutdown function is also available
which can initiate either a complete shutdown with
automatic restart or latch the supply off.
Other features include fully latched operation, double-
pulse suppression, deadline adjust capability, a ±1%
trimmed bandgap reference, and low outputs in the
OFF state.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UC1846-SP
CDIP (16)
6.92 mm × 19.56 mm
CFP (16)
6.73 mm × 10.30 mm
LCCC (20)
8.89 mm × 8.89 mm
KGD(2)
N/A
UC1846-SP RHA
CDIP (16)
6.92 mm × 19.56 mm
CFP (16)
6.73 mm × 10.30 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
(2) KGD = known good die
Block Diagram


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