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- Manuals
- 128
- Models
- 63
- Last added
- 2012-08-09
UNITRODE models by category
Latest UNITRODE manuals
UNITRODE UC1826/UC2826/UC3826 handbook
The UC1826 UC2826 UC3826 is a secondary side average current mode controller for isolated power supplies, with a 1MHz operation frequency, excellent anti-noise, good transient response and accurate maximum duty cycle programmable function.
UNITRODE UC1824 UC2824 UC3824 handbook
The UC1824 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.
UNITRODE UC1725 UC2725 UC3725 handbook
This product is an isolated high side FET driver for driving isolated MOSFET transistors
UNITRODE UC1708/UC2708/UC3708 handbook
UNITRODE UC1638/UC2638/UC3638 handbook
The UC1638 family of integrated circuits are advanced pulse width modulators intended for a variety of PWM motor drive and amplifier applications requiring either uni-directional or bi-directional drive circuits. The key features of the UC1638 include a programmable high speed triangle oscillator, a 5X differential current sensing amplifier, high slew rate error amplifier, high speed PWM comparators, and two 50mA open collector as well as two ±500mA totem pole output stages. This controller is specified for higher performance applications, yet maintains flexibility.
UNITRODE UC1610/UC2610/UC3610 handbook
This document describes the UC1610, UC2610, UC3610 dual Schottky diode bridges in both hermetic CERDIP and copper-leaded plastic packages. It provides the features and characteristics of the products.
UNITRODE UC2577-ADJ handbook(1)
The UC2577-ADJ is a simple boost voltage regulator produced by Texas Instruments. The device has a wide input voltage range (3.0V to 40V), a 3.0A NPN output switch, and undervoltage lockout, thermal protection circuitry and current limiting features.
UNITRODE UC2577-ADJ handbook
UNITRODE UC1572 UC2572 UC3572 handbook
The UC3572 is a negative output flyback pulse width modulator which converts a positive input voltage to a regulated negative output voltage. The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS switch. The block diagram consists of a precision reference, an error amplifier configured for voltage mode operation, an oscillator, a PWM comparator with latching logic, and a 0.5A peak gate driver. The UC3572 includes an undervoltage lockout circuit to insure sufficient input supply voltage is present before any switching activity can occur, and a pulse-by-pulse current limit. Output current can be sensed and limited to a user determined maximum value. The UVLO circuit turns the chip off when the input voltage is below the UVLO threshold. In addition, a sleep comparator interfaces to the UVLO circuit to turn the chip off. This reduces the supply current to only 50µA, making the UC3572 ideal for battery powered applications.
UNITRODE UC1543 UC1544 UC2543 UC2544 UC3543 UC3544 handbook
This product contains over-voltage, under-voltage and current sensing circuits, an internal 1% accurate reference, programmable time delays, SCR “crowbar” drive of 300mA, remote activation capability, optional over-voltage latch, and uncommitted comparator inputs for low voltage sensing (only for UC1544 series)
UNITRODE UC1525A/27A UC2525A/27A UC3525A/27A handbook(1)
The UC1525A/27A UC2525A/27A UC3525A/27A regulating pulse width modulators have features including 8 to 35V operation, 5.1V reference trimmed to ±1%, 100Hz to 500kHz oscillator range, separate oscillator sync terminal, adjustable deadtime control, internal soft-start, pulse-by-pulse shutdown, input undervoltage lockout, and latching PWM.
UNITRODE UC1526A UC2526A UC3526A handbook
The UC1526A Series are improved-performance pulse-width modulator circuits intended for direct replacement of equivalent non-“A” versions in all applications.
UNITRODE UC1526 UC2526 UC3526 handbook
The UC1526, UC2526 and UC3526 are three high-performance pulse width modulator chips. They include a temperature-compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and setting logic, and two low impedance power drivers. Also included are soft-start and under-voltage lockout, digital current limiting, double pulse inhibit, a data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. All digital control ports are compatible with TTL and B-series CMOS for easy interface. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformerless and transformer coupled. The UC1526 is characterized for operation over the full military temperature range of -55°C to +125°C. The UC2526 is characterized for operation from -25°C to +85°C, and the UC3526 is characterized for operation from 0° to +70°C.
UNITRODE UC1525A/27A UC2525A/27A UC3525A/27A handbook
This manual describes the function and characteristics of UC1525A/27A, UC2525A/27A, UC3525A/27A regulating pulse width modulators.
UNITRODE UC1823/UC2823/UC3823 handbook
The UC1823 family of PWM control ICs are optimized for high fre- quency switched mode power supply applications with 50ns propagation delay, 1.5A peak current and 5.1V bandgap reference voltage.