SG1846PWM Controller, Current Mode PWM, Dual Sink/SourceOutputs, 8-40V -55°C to 125°C | DC DC Switching Controllers | 1 | Active | The SG1846 family of control ICs provides the required features to implement Fixed Frequency, Current mode control schemes while maintaining a minimum external parts count. The advanced performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include, inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel "power modules" while maintaining equal current sharing.
Protection circuitry includes built-in under-voltage lockout and programmable current limit in addition to soft start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart, or latch the supply off. Other features include fully latched operation, double-pulse suppression, dead-time adjust capability, and a ±1% trimmed bandgap reference.
**Microchip Ordering Part** [**Standard Microcircuit Drawing (SMD)**](https://ww1.microchip.com/downloads/en/DeviceDoc/00003952.pdf)
SG1846F-DESC Cross Reference 5962-8680601FA
SG1846F-DESC Cross Reference 5962-8680601FX
SG1846J-DESC Cross Reference 5962-8680601EA
SG1846J-DESC Cross Reference 5962-8680601EX |
SG2003Driver Darlington Transistor , 7 NPN’s50 to 95V, 500 to 600ma - 5V TTL, CMOS - | Transistors | 5 | Active | The SG2000 series integrates seven NPN Darlington pairs with internal suppression diodes to drive lamps, relays, and solenoids in many military, aerospace, and industrial applications that require severe environments. All units feature open collector outputs with greater than 50V breakdown voltages combined with 500mA current carrying capabilities. Five different input configurations provide optimized designs for interfacing with DTL, TTL, PMOS, or CMOS drive signals. These devices are designed to operate from -55°C to 125°C ambient temperature in a 16 pin dual in line ceramic (J) package and 20 pin Leadless Chip Carrier (LCC). The plastic SOIC (DW) is designed to operate over the commercial temperature range of 0°C to 70°C.
**Microchip Ordering Part** [**Standard Microcircuit Drawing (SMD)**](https://ww1.microchip.com/downloads/en/DeviceDoc/00003952.pdf)
SG2003J-JAN Cross Reference M38510/14103BEA
SG2003J-JAN Cross Reference M38510/14103BEX |
SG2004Driver Darlington Transistor Array -7 NPN’s 50V 500mA 6V-15V CMOS, PMOS | Transistors | 3 | Active | The SG2000 series integrates seven NPN Darlington pairs with internal suppression diodes to drive lamps, relays, and solenoids in many military, aerospace, and industrial applications that require severe environments. All units feature open collector outputs with greater than 50V breakdown voltages combined with 500mA current carrying capabilities. Five different input configurations provide optimized designs for interfacing with DTL, TTL, PMOS, or CMOS drive signals. These devices are designed to operate from -55°C to 125°C ambient temperature in a 16 pin dual in line ceramic (J) package and 20 pin Leadless Chip Carrier (LCC). The plastic SOIC (DW) is designed to operate over the commercial temperature range of 0°C to 70°C.
**Microchip Ordering Part** [**Standard Microcircuit Drawing (SMD)**](https://ww1.microchip.com/downloads/en/DeviceDoc/00003952.pdf)
SG2004J-JAN Cross Reference M38510/14104BEA
SG2004J-JAN Cross Reference M38510/14104BEX |
SG2013Driver - Darlington Transistor Array - 50V 600mA 5V TTL, CMOS | Discrete Semiconductor Products | 2 | Active | The SG2000 series integrates seven NPN Darlington pairs with internal suppression diodes to drive lamps, relays, and solenoids in many military, aerospace, and industrial applications that require severe environments. All units feature open collector outputs with greater than 50V breakdown voltages combined with 500mA current carrying capabilities.
Five different input configurations provide optimized designs for interfacing with DTL, TTL, PMOS, or CMOS drive signals. These devices are designed to operate from -55°C to 125°C ambient temperature in a 16 pin dual in line ceramic (J) package and 20 pin Leadless Chip Carrier (LCC). The plastic SOIC (DW) is designed to operate over the commercial temperature range of 0°C to 70°C |
SG2023Driver - Darlington Transistor Array 95V 500mA 5V TTL, CMOS | Discrete Semiconductor Products | 5 | Active | The SG2000 series integrates seven NPN Darlington pairs with internal suppression diodes to drive lamps, relays, and solenoids in many military, aerospace, and industrial applications that require severe environments. All units feature open collector outputs with greater than 50V breakdown voltages combined with 500mA current carrying capabilities. Five different input configurations provide optimized designs for interfacing with DTL, TTL, PMOS, or CMOS drive signals. These devices are designed to operate from -55°C to 125°C ambient temperature in a 16 pin dual in line ceramic (J) package and 20 pin Leadless Chip Carrier (LCC). The plastic SOIC (DW) is designed to operate over the commercial temperature range of 0°C to 70°C.
**Microchip Ordering Part** [**Standard Microcircuit Drawing (SMD)**](https://ww1.microchip.com/downloads/en/DeviceDoc/00003952.pdf)
SG2023J-DESC Cross Reference 5962-8987601EA
SG2023J-DESC Cross Reference 5962-8987601EX |
SG2024Driver - Darlington Transistor Array - 95V 500mA 6V-15V CMOS, PMOS | Transistors | 1 | Active | The SG2000 series integrates seven NPN Darlington pairs with internal suppression diodes to drive lamps, relays, and solenoids in many military, aerospace, and industrial applications that require severe environments. All units feature open collector outputs with greater than 50V breakdown voltages combined with 500mA current carrying capabilities.
Five different input configurations provide optimized designs for interfacing with DTL, TTL, PMOS, or CMOS drive signals. These devices are designed to operate from -55°C to 125°C ambient temperature in a 16 pin dual in line ceramic (J) package and 20 pin Leadless Chip Carrier (LCC). The plastic SOIC (DW) is designed to operate over the commercial temperature range of 0°C to 70°C |
SG2524BDWPWM Controller Voltage Mode +/-1% Ref - pulse width modulator –25 °C to 85 °C | DC DC Switching Controllers | 7 | Active | The SG1524B is a pulse width modulator for switching power supplies that features improved performance over industry standards like the SG1524. A direct pin-for-pin replacement for the earlier device, it combines advanced processing techniques and circuit design to provide improved reference accuracy, and extended common mode range at the error amplifier and current limit inputs. A DC-coupled flip-flop eliminates triggering and glitch problems, and a PWM data latch prevents edge oscillations. The circuit incorporates true digital shutdown for high speed response, while an under voltage lockout circuit prevents spurious outputs when the supply voltage is too low for stable operation. Full double-pulse suppression logic insures alternating output pulses when the Shutdown pin is used for pulse-by-pulse current limiting. The SG1524B is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG2524B is characterized for the industrial range of -25°C to 85°C, and the SG3524B is designed for the commercial range of 0°C to 70°C. |
SG2525AVoltage Mode PWMs Dual Sink/Source Outputs - 100Hz to 500KHz oscillator range | DC DC Switching Controllers | 3 | Active | The SG1525A/1527A series of pulse width modulator integrated circuit s are designed to offer improved performance and lower external parts count when used to implement all types of switching power supplies. The on-chip +5.1 V reference is trimmed to ±1% initial accuracy and the input common-mode range of the error amplifier includes the reference voltage, eliminating external potentiometers and divider resistors. A Sync input to the oscillator allows multiple units to be slaved together, or a single unit to be synchronized to an external system clock. A single resistor between the CT pin and the D is charge pin provides a wide range of deadtime adjustment. These devices also feature built-in soft-start circuitry with only a timing capacitor required externally. A Shutdown pin controls both the soft -start circuitry and the output stages, providing instantaneous turn-off with soft-start recycle for slow turn-on. These functions are also controlled by an under voltage lockout which keeps the outputs o ff and the soft-start capacitor discharged for input voltages less than that required for normal operation. Another unique feature of these PWM circuits is a latch following the comparator. Once a PWM pulse has been terminated for any reason, the outputs remain off for the duration of the period. The latch is reset with each clock pulse. The output stages are totem-pole designs capable of sourcing or sinking in excess of 200mA. The SG1525A output stage features NOR logic, giving a LOW output for an OFF state. The SG1527A utilizes OR logic, which results in a HIGH output level when OFF |
SG2526BVoltage Mode PWM, 500Khz - 8V to 35V Operation -25°C to 85°C | Integrated Circuits (ICs) | 3 | Active | The SG1526 is a high-performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and steering logic, and two low impedance power drivers. Also included are protective features such as 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. For ease of interface, all digital control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformer less and transformer coupled. The SG1526 is characterized for operation over the full military ambient
junction temperature range of -55°C to +150°C. The SG2526 is characterized for operation from -25°C to +150°C, and the SG3526 is characterized for operation from 0°C to +125°C |
SG2543Precision Output Supervisory Circuit Voltage to 1% Accuracy 25°C to 85°C | Power Supply Controllers, Monitors | 2 | Active | This monolithic integrated circuit contains all the functions necessary to monitor and control the output of a sophisticated power supply system. Over-voltage (O.V.) sensing with provision to trigger an external SCR "crowbar" shutdown; an under-voltage (U.V.) circuit which can be used to monitor either the output or to sample the input line voltage; and a third op amp/comparator usable for current sensing (C.L.) are all included in this IC, together with an independent, accurate reference generator.
Both over and under-voltage sensing circuits can be externally programmed for minimum time duration of fault before triggering. All functions contain open collector outputs which can be used independently or wire-ORed together; and although the SCR trigger is directly connected only to the over-voltage sensing circuit, it may be optionally activated by any of the other outputs, or from an external signal. The O.V. circuit also includes an optional latch and external reset capability.
The current sense circuit may be used with external compensation as a linear amplifier or as a high gain comparator. Although nominally set for zero input offset, a fixed threshold may be added with an external resistor. Instead of current limiting, this circuit may also be used as an additional voltage monitor.
The reference generator circuit is internally trimmed to eliminate the need for external potentiometers and the entire circuit may be powered directly from either the output being monitored or from a separate bias voltage. |
