UCC38C43DGKRG4 ,BiCMOS Low-Power Current Mode PWM Controller 8-VSSOP 0 to 70Featuresfrequency, peak current-mode power supplies, this1• Enhanced Replacement for UCx84x andfami ..
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UCC38C44 ,BiCMOS Low-Power Current Mode PWM ControllerFeaturesfrequency, peak current-mode power supplies, this1• Enhanced Replacement for UCx84x andfami ..
UCC38C44D ,BiCMOS Low-Power Current Mode PWM ControllerMaximum Ratings(1)(2)over operating free-air temperature range (unless otherwise noted)MIN MAX UNIT ..
UCC38C44D ,BiCMOS Low-Power Current Mode PWM Controllerfeatures a• Rail-to-Rail Output Swings with 25-ns Rise andfast current-sense-to-output delay time o ..
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UPB1507GV-E1 ,3GHz INPUT DIVIDE BY 256, 128, 64 PRESCALER IC FOR ANALOG DBS TUNERSDATA SHEETBIPOLAR DIGITAL INTEGRATED CIRCUITSP PPB1506GV, P PPB1507GVP P P P3GHz INPUT DIVID ..
UPB1507GV-E1 ,3GHz INPUT DIVIDE BY 256, 128, 64 PRESCALER IC FOR ANALOG DBS TUNERSFeatures Part No. ICC fin VCC Package Pin connection(division, Freq.) (mA) (GHz) (V)y512, y256, 2.5 ..
UCC38C43D-UCC38C43DGK-UCC38C43DGKR-UCC38C43DGKRG4-UCC38C43DRG4
BiCMOS Low-Power Current Mode PWM Controller
VIN
UCC28C43
VDD
VREF
RT/CT
GND COMP
OUT
VOUT
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UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45
UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45SLUS458G –JULY 2000–REVISED JANUARY 2017
UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller Features Enhanced Replacement for UCx84x and
UCx84xA Family With Pin-to-Pin Compatibility 1-MHz Operation 50-µA Standby Current, 100-µA Maximum Low Operating Currentof 2.3 mAat52 kHz Fast 35-ns Cycle-by-Cycle Over-Current Limiting ±1-A Peak Output Current Rail-to-Rail Output Swings with 25-ns Rise and
20-ns Fall Times ±1% Initial Trimmed 2.5-V Error Amplifier
Reference Trimmed Oscillator Discharge Current New Undervoltage Lockout Versions VSSOP-8 Package Minimizes Board Space
Applications Switch-Mode Power Supplies General Purpose DC-DCor Off-Line Isolated
Power Converters Board Mount Power Modules
DescriptionUCCx8C4x family are high-performance, current-
mode PWM controllers. The UCCx8C4x is an
enhanced BiCMOS version with pin-for-pin
compatibilityto the industry standard UCx84xA family
and UCx84x familyof PWM controllers. The BiCMOS
technology offers lower power consumption to
improve efficiencyas wellas faster current sense and
oscillator frequency.In addition, lower startup voltage
versions of7V are offered as UCCx8C40 and
UCCx8C41 for use in battery systems. The
UCC28C4x seriesis specified for operation from
–40°C to 105°C, and the UCC38C4x series is
specified for operation from 0°Cto 70°C.
Providing necessary features to control fixed
frequency, peak current-mode power supplies, this
family offers the following performance advantages.
The device offers high-frequency operation upto1
MHz, suitable for high speed applications. The
trimmed discharge current enables more precise
programmingof the maximum duty cycle and dead-
time limit when compared to the UCx84x family.
Reduced start-up and operating currents minimizes
start-up loss and low operating power consumption
for improved efficiency. The device also featuresa
fast current-sense-to-output delay timeof 35 ns for
superior overload protectionat the power switch, and ±1-A peak output current capability with improved
rise and fall times for driving large external MOSFETs
directly.
The UCC38C4x familyis offeredin 8-pin VSSOP
(DGK), 8-pin SOIC (D), and 8-pin PDIP (P) packages.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
