UC3825QTRG3

Obsolete

Texas Instruments

IC REG CTRLR MULT TOP 20PLCC

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UC3825QTRG3

Obsolete

Texas Instruments

IC REG CTRLR MULT TOP 20PLCC

Deep-Dive with AI

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UC3825QTRG3

Clock Sync	False
Control Features	Frequency Control, Soft Start, Enable, Current Limit, Ramp
Frequency - Switching [Max]	460 kHz
Frequency - Switching [Min]	340 kHz
Function	Step-Up, Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	20-LCC (J-Lead)
Supplier Device Package	20-PLCC (9x9)
Synchronous Rectifier	False
Topology	Forward Converter, Flyback, Push-Pull, Half-Bridge, Full-Bridge, Boost, Buck
Voltage - Supply (Vcc/Vdd) [Max]	30 V
Voltage - Supply (Vcc/Vdd) [Min]	8.4 V

UC3825A Series

Ehanced 30V, 1.5A double ended PWM controller with 9.2V/8.4V UVLO and 85% duty cycle , 0C to 70C

Part	Output Phases	Frequency - Switching [Min]	Frequency - Switching [Max]	Control Features	Mounting Type	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Configuration	Topology	Function	Package / Case [x]	Package / Case	Package / Case [y]	Package / Case	Package / Case	Duty Cycle (Max) [Max]	Output Isolation	Voltage - Start Up	Frequency - Switching	Duty Cycle	Fault Protection
Texas Instruments UC3825DW	1	340 kHz	460 kHz	Current Limit Enable Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	30 V	Positive	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Down Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm
Texas Instruments UC3825ANG4	1	400 kHz	1 MHz	Current Limit Frequency Control Ramp Soft Start	Through Hole	Transistor Driver	70 °C	0 °C	2	16-PDIP	8.4 V	22 V	Positive	Boost Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Up Step-Up/Step-Down		16-DIP		0.3 in	7.62 mm	50 %
Texas Instruments UC3825ADWG4	1	400 kHz	1 MHz	Current Limit Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	22 V	Positive	Boost Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm			50 %
Texas Instruments UC3825QTRG3	1	340 kHz	460 kHz	Current Limit Enable Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	20-PLCC (9x9)	8.4 V	30 V	Positive	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Down Step-Up Step-Up/Step-Down		20-LCC (J-Lead)
Texas Instruments UC3825BDW				Frequency Control Soft Start	Surface Mount		150 °C	-55 °C		16-SOIC	10 V	22 V		Boost Buck Flyback Forward		0.295 in	16-SOIC	7.5 mm				Non-Isolated	16 V	1 MHz	50 %	Current Limiting
Texas Instruments UC3825DWTR	1	340 kHz	460 kHz	Current Limit Enable Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	30 V	Positive	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Down Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm
Texas Instruments UC3825ADWTRG4	1	400 kHz	1 MHz	Current Limit Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	22 V	Positive	Boost Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm			50 %
Texas Instruments UC3825DWG4	1	340 kHz	460 kHz	Current Limit Enable Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	30 V	Positive	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Down Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm
Texas Instruments UC3825ADWTR	1	400 kHz	1 MHz	Current Limit Frequency Control Ramp Soft Start	Surface Mount	Transistor Driver	70 °C	0 °C	2	16-SOIC	8.4 V	22 V	Positive	Boost Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	Step-Up Step-Up/Step-Down	0.295 in	16-SOIC	7.5 mm			50 %
Texas Instruments UC3825BDWTR				Frequency Control Soft Start	Surface Mount		150 °C	-55 °C		16-SOIC	10 V	22 V		Boost Buck Flyback Forward		0.295 in	16-SOIC	7.5 mm				Non-Isolated	16 V	1 MHz	50 %	Current Limiting

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

UC3825A Series

The UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator with a 1V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at an output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the outputs are high impedance.

These devices feature totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is designed as a high level.

Documents

Technical documentation and resources

No documents available