UC3573Buck Pulse Width Modulator Stepdown Voltage Regulator | DC DC Switching Controllers | 2 | Active | The UC3573 is a Buck pulse width modulator which steps down and regulates a positive input voltage. The chip is optimized for use in a single inductor buck 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 UC3573 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. Input current can be sensed and limited to a user determined maximum value. In addition, a sleep comparator interfaces to the UVLO circuit which turns the chip off when the input voltage is below the UVLO threshold. This reduces the supply current to only 50uA, making the UC3573 ideal for battery powered applications.
The UC3573 is a Buck pulse width modulator which steps down and regulates a positive input voltage. The chip is optimized for use in a single inductor buck 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 UC3573 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. Input current can be sensed and limited to a user determined maximum value. In addition, a sleep comparator interfaces to the UVLO circuit which turns the chip off when the input voltage is below the UVLO threshold. This reduces the supply current to only 50uA, making the UC3573 ideal for battery powered applications. |
| DC DC Switching Controllers | 2 | NRND | |
UC3610Dual schottky diode bridge with 3-A peak forward current | Bridge Rectifiers | 2 | Active | This eight-diode array is designed for high-current, low duty-cycle applications typical of flyback voltage clamping for inductive loads. The dual bridge connection makes this device particularly applicable to bipolar driven stepper motors.
The use of Schottky diode technology features high efficiency through lowered forward voltage drop and decreased reverse recovery time.
This single monolithic chip is fabricated in both hermetic CERDIP and copper-leaded plastic packages. The UC1610 in ceramic is designed for -55°C to 125°C environments but with reduced peak current capability. The UC2610 in plastic and ceramic is designed for -25°C to 125°C environments also with reduced peak current capability; while the UC3610 in plastic has higher current rating over a 0°C to 70°C temperature range.
This eight-diode array is designed for high-current, low duty-cycle applications typical of flyback voltage clamping for inductive loads. The dual bridge connection makes this device particularly applicable to bipolar driven stepper motors.
The use of Schottky diode technology features high efficiency through lowered forward voltage drop and decreased reverse recovery time.
This single monolithic chip is fabricated in both hermetic CERDIP and copper-leaded plastic packages. The UC1610 in ceramic is designed for -55°C to 125°C environments but with reduced peak current capability. The UC2610 in plastic and ceramic is designed for -25°C to 125°C environments also with reduced peak current capability; while the UC3610 in plastic has higher current rating over a 0°C to 70°C temperature range. |
UC3611Quad schottky diode array with 3-A peak Forward Current | Discrete Semiconductor Products | 1 | Active | This four-diode array is designed for general purpose use as individual diodes or as a high-speed, high-current bridge. It is particularly useful on the outputs of high-speed power MOSFET drivers where Schottky diodes are needed to clamp any negative excursions caused by ringing on the driven line.These diodes are also ideally suited for use as voltage clamps when driving inductive loads such as relays and solenoids, and to provide a path for current free-wheeling in motor drive applications.The use of Schottky diode technology features high efficiency through lowered forward voltage drop and decreased reverse recovery time.This single monolithic chip is fabricated in both hermetic CERDIP and copper-eaded plastic packages. The UC1611 in ceramic is designed for -55°C to 125°C environments but with reduced peak current capability: while the UC3611 in plastic has higher current rating over a 0°C to 70°C ambient temperature range.
This four-diode array is designed for general purpose use as individual diodes or as a high-speed, high-current bridge. It is particularly useful on the outputs of high-speed power MOSFET drivers where Schottky diodes are needed to clamp any negative excursions caused by ringing on the driven line.These diodes are also ideally suited for use as voltage clamps when driving inductive loads such as relays and solenoids, and to provide a path for current free-wheeling in motor drive applications.The use of Schottky diode technology features high efficiency through lowered forward voltage drop and decreased reverse recovery time.This single monolithic chip is fabricated in both hermetic CERDIP and copper-eaded plastic packages. The UC1611 in ceramic is designed for -55°C to 125°C environments but with reduced peak current capability: while the UC3611 in plastic has higher current rating over a 0°C to 70°C ambient temperature range. |
| Power Management (PMIC) | 6 | Active | |
| Power Management (PMIC) | 3 | Active | |
| Motor Drivers, Controllers | 4 | Active | |
| Integrated Circuits (ICs) | 1 | Obsolete | |
UC37051.5-A/1.5-A dual-channel gate driver with 40-V VDD and thermal shutdown, in 8-pin packages | Integrated Circuits (ICs) | 4 | Active | The UC1705 family of power drivers is made with a high sppeed Schottky process to interface between low-level control functions and high-power switching devices - particularly power MOSFETs. These devices are also an optimum choise for capacitive line drivers where up to 1.5 A may be switched in either direction. With both inverting and non-inverting inputs available, logic signals of either polarity may be accepted, or one input can be used to gate or strobe the other.
Supply voltages for both VSand VCcan independently range from 5 V to 40 V. For additional application details, see the UC1707/3707 data sheet (SLUS177).
The UC1705 is packaged in an 8-pin hermetically sealed CERDIP for -55°C to 125°C operation. The UC3705 is specified for a temperature range of 0°C to 70°C and is available in either a plastic minidip or a 5-pin, powerTO-220 package.
The UC1705 family of power drivers is made with a high sppeed Schottky process to interface between low-level control functions and high-power switching devices - particularly power MOSFETs. These devices are also an optimum choise for capacitive line drivers where up to 1.5 A may be switched in either direction. With both inverting and non-inverting inputs available, logic signals of either polarity may be accepted, or one input can be used to gate or strobe the other.
Supply voltages for both VSand VCcan independently range from 5 V to 40 V. For additional application details, see the UC1707/3707 data sheet (SLUS177).
The UC1705 is packaged in an 8-pin hermetically sealed CERDIP for -55°C to 125°C operation. The UC3705 is specified for a temperature range of 0°C to 70°C and is available in either a plastic minidip or a 5-pin, powerTO-220 package. |
UC37061.5-A/1.5-A dual-channel gate driver with 40-V VDD, 40-ns fall time, and dual-inputs for each output | PMIC | 4 | Active | The UC1706 family of output drivers are made with a high-speed Schottky process to interface between low-level control functions and high-power switching devices - particularly power MOSFET's. These devices implement three generalized functions as outlined below.
First: They accept a single-ended, low-current digital input of either polarity and process it to activate a pair of high-current, totem pole outputs which can source or sink up to 1.5A each.
Second: They provide an optional single-ended to push-pull conversion through the use of an internal flip-flop driven by double-pulse-suppression logic. With the flip-flop disabled, the outputs work in parallel for 3.0A capability.
Third: Protection functions are also included for pulse-by-pulse current limiting, automatic deadband control, and thermal shutdown.
These devices are available in a two-watt plastic "bat-wing" DIP for operation over a 0°C to 70°C temperature range and, with reduced power, in a hermetically sealed cerdip for -55°C to +125°C operation. Also available in surface mount Q and L packages.
The UC1706 family of output drivers are made with a high-speed Schottky process to interface between low-level control functions and high-power switching devices - particularly power MOSFET's. These devices implement three generalized functions as outlined below.
First: They accept a single-ended, low-current digital input of either polarity and process it to activate a pair of high-current, totem pole outputs which can source or sink up to 1.5A each.
Second: They provide an optional single-ended to push-pull conversion through the use of an internal flip-flop driven by double-pulse-suppression logic. With the flip-flop disabled, the outputs work in parallel for 3.0A capability.
Third: Protection functions are also included for pulse-by-pulse current limiting, automatic deadband control, and thermal shutdown.
These devices are available in a two-watt plastic "bat-wing" DIP for operation over a 0°C to 70°C temperature range and, with reduced power, in a hermetically sealed cerdip for -55°C to +125°C operation. Also available in surface mount Q and L packages. |
