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UC28025DW-UC28025DWG4-UC28025DWRG4-UC28025N-UC28025NG4 Fast Delivery,Good Price
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UC28025DWTIN/a5000avaiEconomy High Speed PWM Controller
UC28025DWG4TEXASN/a1171avaiEconomy High Speed PWM Controller 16-SOIC -40 to 105
UC28025DWRG4TIN/a3500avaiEconomy High Speed PWM Controller 16-SOIC -40 to 105
UC28025NUCN/a21avaiEconomy High Speed PWM Controller
UC28025NG4TEXASN/a8avaiEconomy High Speed PWM Controller 16-PDIP -40 to 105


UC28025DW ,Economy High Speed PWM ControllerMaximum Ratings.. 411.1 Layout Guidelines.... 186.2 ESD Ratings........ 411.2 Layout Example....... ..
UC28025DWG4 ,Economy High Speed PWM Controller 16-SOIC -40 to 105Sample & Support &Product Tools &TechnicalCommunityBuyFolder Documents SoftwareUC28023,UC28025SLUS5 ..
UC28025DWRG4 ,Economy High Speed PWM Controller 16-SOIC -40 to 105Electrical Characteristics....... 512.2 Related Links.. 196.6 Switching Characteristics...... 612.3 ..
UC28025N ,Economy High Speed PWM ControllerFeatures... 18.4 Device Functional Modes.... 142 Applications..... 19 Application and Implementatio ..
UC28025NG4 ,Economy High Speed PWM Controller 16-PDIP -40 to 105Maximum Ratings(1)(2)over operating free-air temperature range (unless otherwise noted)MIN MAX UNIT ..
UC2813 , High Speed PWM Controller
ULN7003A , HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON ARRAY
ULN7003A , HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON ARRAY
ULQ2001 ,SEVEN DARLINGTON ARRAYSULQ2001A - ULQ2003AULQ2002A - ULQ2004A®SEVEN DARLINGTON ARRAYS. SEVEN DARLINGTONS PER PACKAGE. EXTE ..
ULQ2001A ,EIGHT DARLINGTON ARRAYSABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Output Voltage 50 VoV Input Voltage (for ULQ20 ..
ULQ2003 ,7-Channel High-Current Darlington ArrayABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Output Voltage 50 VoV Input Voltage (for ULQ20 ..
ULQ2003A ,7-Channel High-Current Darlington ArrayULQ2001A - ULQ2003AULQ2002A - ULQ2004A®SEVEN DARLINGTON ARRAYS. SEVEN DARLINGTONS PER PACKAGE. EXTE ..


UC28025DW-UC28025DWG4-UC28025DWRG4-UC28025N-UC28025NG4
Economy High Speed PWM Controller
ILIM/SD
RAMP
INV
EAOUT
UC28025
OUTB
OUTA
VREF13
VCCVC
15V
22pF
10nF
1N5820
42Vto56V
4.7
μF
VIN
1kΩ
1kΩ
8.2kΩ
0.1μF
4.7μF
0.8μH
VOUT5VA to10AF
μ
5:1
12V
Peak Current Mode, Average Current Mode,or
Voltage Mode (With FeedForward) Control
Methods Practical Operation Upto1 MHz 50-ns Propagation Delayto Output ±1.5-A Peak Totem Pole Outputs 9-Vto 30-V Nominal Operational Voltage Wide Bandwidth Error Amplifier Fully Latched Logic With Double Pulse
Suppression Pulse-by-Pulse Current Limiting Programmable Maximum Duty Cycle Control Undervoltage Lockout With Hysteresis Trimmed 5.1-V Reference With UVLO Same Functionalityas UC3823 and UC3825 Applications Off-Line and DC-DC Power Supplies Converters Using Voltage Mode, Peak Current
Mode,or Average Current Mode Control Methods Single-Endedor Two-Switch Topology Designs Description
The UC28023 and UC28025 are fixed-frequency
PWM controllers optimized for high-frequency
switched-mode power-supply applications. The
UC28023isa single output PWM for single-ended
topologies while the UC28025 offers dual alternating
outputs for double-ended and full bridge topologies.
oscillator, compensated reference,a
wide amplifier,a high-speed current-
sense and high-current, active-high,
totem-pole to directly drive external
MOSFETs.
Protection includesa current limit comparator
witha TTL compatible shutdown
port, pin which doubles asa
maximum clamp. The logicis fully latched operation and prohibit multiple
pulses An undervoltage lockout section
with hysteresis assures low start-up
current. lockout, the outputs are
Typical Application Schematic
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