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UC2524

占空比為 45%、工作溫度范圍為 -25°C 至 85°C 的 40V VCC、雙端 300KHz 電壓模式 PWM 控制器; ? Complete PWM Power Control Circuitry\n? Uncommitted Outputs for Single-Ended or Push-Pull Applications\n? Low Standby Current . . . 8 mA Typical\n? Interchangeable With SG1524, SG2524 and SG3524, Respectively;

The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the construction of regulating power supplies, inverters or switching regulators. They can also be used as the control element for high-power-output applications. The UC1524 family was designed for switching regulators of either polarity, transformer-coupled dc-to-dc converters, transformerless voltage doublers and polarity converter applications employing fixed-frequency, pulse-width modulation techniques. The dual alternating outputs allow either single-ended or push-pull applications. Each device includes an on-chip reference, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted output transistors, a high-gain comparator, and current-limiting and shut-down circuitry. The UC1524 is characterized for operation over the full military temperature range of -55°C to 125°C. The UC2524 and UC3524 are designed for operation from -25°C to 85°C and 0°C to 70°C, respectively.

UC2524

Advanced Regulating Pulse Width Modulators

UC2524A

占空比為 45%、-25°C 至 85°C 的高級 40V VCC、雙端 300KHz 電壓模式 PWM 控制器; ? Fully Interchangeable with Standard UC1524 Family\n? Precision Reference Internally Trimmed to ±1%\n? High-Performance Current Limit Function\n? Under-Voltage Lockout with Hysteretic Turn-on\n? Start-Up Supply Current Less Than 4mA\n? Output Current to 200mA\n? 60V Output Capability\n? Wide Common-Mode Input Range for both Error and Current Limit Amplifiers\n? PWM Latch Insures Single Pulse per Period\n? Double Pulse Suppression Logic\n? 200ns Shutdown through PWM Latch\n? Guaranteed Frequency Accuracy\n? Thermal Shutdown Protection;

The UC1524A family of regulating PWM ICs has been designed to retain the same highly versatile architecture of the industry standard UC1524 (SG1524) while offering substantial improvements to many of its limitations. The UC1524A is pin compatible with \"non-A\" models and in most existing applications can be directly interchanged with no effect on power supply performance. Using the UC1524A, however, frees the designer from many concerns which typically had required additional circuitry to solve. The UC1524A includes a precise 5V reference trimmed to ±1% accuracy, eliminating the need for potentiometer adjustments; an error amplifier with an input range which includes 5V, eliminating the need for a reference divider; a current sense amplifier useful in either the ground or power supply output lines; and a pair of 60V, 200mA uncommitted transistor switches which greatly enhance output versatility. An additional feature of the UC1524A is an under-voltage lockout circuit which disables all the internal circuitry, except the reference, until the input voltage has risen to 8V. This holds standby current low until turn-on, greatly simplifying the design of low power, off-line supplies. The turn-on circuit has approximately 600mV of hysteresis for jitter-free activation. Other product enhancements included in the UC1524A?s design include a PWM latch which insures freedom from multiple pulsing within a period, even in noisy environments, logic to eliminate double pulsing on a single output, a 200ns external shutdown capability, and automatic thermal protection from excessive chip temperature. The oscillator circuit of the UC1524A is usable beyond 500kHz and is now easier to synchronize with an external clock pulse. The UC1524A is packaged in a hermetic 16-pin DIP and is rated for operation from -55°C to +125°C. The UC2524A and 3524A are available in either ceramic or plastic packages and are rated for operation from -25°C to +85°C and 0°C to 70°C, respectively. Surface mount devices are also available.

UC2524AM

高級穩(wěn)壓脈寬調(diào)制器; ? Fully Interchangeable with Standard UC1524 Family\n? Precision Reference Internally Trimmed to ±1%\n? High-Performance Current Limit Function\n? Under-Voltage Lockout with Hysteretic Turn-on\n? Start-Up Supply Current Less Than 4mA\n? Output Current to 200mA\n? 60V Output Capability\n? Wide Common-Mode Input Range for both Error and Current Limit Amplifiers\n? PWM Latch Insures Single Pulse per Period\n? Double Pulse Suppression Logic\n? 200ns Shutdown through PWM Latch\n? Guaranteed Frequency Accuracy\n? Thermal Shutdown Protection;

The UC1524A family of regulating PWM ICs has been designed to retain the same highly versatile architecture of the industry standard UC1524 (SG1524) while offering substantial improvements to many of its limitations. The UC1524A is pin compatible with \"non-A\" models and in most existing applications can be directly interchanged with no effect on power supply performance. Using the UC1524A, however, frees the designer from many concerns which typically had required additional circuitry to solve.\n The UC1524A includes a precise 5V reference trimmed to ±1% accuracy, eliminating the need for potentiometer adjustments; an error amplifier with an input range which includes 5V, eliminating the need for a reference divider; a current sense amplifier useful in either the ground or power supply output lines; and a pair of 60V, 200mA uncommitted transistor switches which greatly enhance output versatility.\n An additional feature of the UC1524A is an under-voltage lockout circuit which disables all the internal circuitry, except the reference, until the input voltage has risen to 8V. This holds standby current low until turn-on, greatly simplifying the design of low power, off-line supplies. The turn-on circuit has approximately 600mV of hysteresis for jitter-free activation.\n Other product enhancements included in the UC1524A?s design include a PWM latch which insures freedom from multiple pulsing within a period, even in noisy environments, logic to eliminate double pulsing on a single output, a 200ns external shutdown capability, and automatic thermal protection from excessive chip temperature. The oscillator circuit of the UC1524A is usable beyond 500kHz and is now easier to synchronize with an external clock pulse.\n The UC1524A is packaged in a hermetic 16-pin DIP and is rated for operation from -55°C to +125°C. The UC2524A and 3524A are available in either ceramic or plastic packages and are rated for operation from -25°C to +85°C and 0°C to 70°C, respectively. Surface mount devices are also available.\n \n

UC2524A

Advanced Regulating Pulse Width Modulators

UC2524A

Advanced Regulating Pulse Width Modulators

UC2524A

Advanced Regulating Pulse Width Modulators

UC2524ADW

Advanced Regulating Pulse Width Modulators

UC2524ADW

Advanced Regulating Pulse Width Modulators

UC2524ADW

Advanced Regulating Pulse Width Modulators