Integrated Circuits (ICs)

SG2843D-TR

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Microchip Technology

SWITCHING CONTROLLER, CURRENT-MODE, 1A, 500KHZ SWITCHING FREQ-MAX, BIPOLAR, PDSO14

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Integrated Circuits (ICs)

SG2843D-TR

Active

Microchip Technology

SWITCHING CONTROLLER, CURRENT-MODE, 1A, 500KHZ SWITCHING FREQ-MAX, BIPOLAR, PDSO14

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SG2843D-TR

Clock Sync	False
Duty Cycle (Max)	95 %
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	100 Hz
Function	Step-Down
Grade	Military
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-25 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	14-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Qualification	MIL-STD-883
Synchronous Rectifier	False
Topology	Buck
Voltage - Supply (Vcc/Vdd)	30 V

SG2843 Series

Current Mode PWMs, High-Reliability Isolated Switching Regulators

Part	Duty Cycle (Max)	Number of Outputs	Function	Output Phases	Output Configuration	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Output Type	Topology	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Qualification	Grade	Voltage - Supply (Vcc/Vdd)
Microchip Technology SG2843DM	95 %	1	Step-Down	1	Positive	8-SOIC	3.9 mm	0.154 in	Surface Mount	Transistor Driver	Buck	500 kHz	1 Hz	8-SOIC	85 C	-25 °C	7.6 V	30 V
Microchip Technology SG2843D	95 %	1	Step-Down	1	Positive	14-SOIC	3.9 mm	0.154 in	Surface Mount	Transistor Driver	Buck	500 kHz	100 Hz		85 C	-25 °C			MIL-STD-883	Military	30 V
Microchip Technology SG2843D-TR	95 %	1	Step-Down	1	Positive	14-SOIC	3.9 mm	0.154 in	Surface Mount	Transistor Driver	Buck	500 kHz	100 Hz		85 C	-25 °C			MIL-STD-883	Military	30 V
Microchip Technology SG2843DM-TR	95 %	1	Step-Down	1	Positive	8-SOIC	3.9 mm	0.154 in	Surface Mount	Transistor Driver	Buck	500 kHz	100 Hz	8-SOIC	85 C	-25 °C			MIL-STD-883	Military	30 V

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

SG2843 Series

The SG1842/43 family of control IC's provides all the necessary features to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components.

Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch. The band-gap reference is trimmed to ±1% over temperature.

Oscillator discharge current is trimmed to less than ±10%. The SG1842/43 has under-voltage lockout, current limiting circuitry and start-up current of less than 1mA. The totem-pole output is optimized to drive the gate of a power MOSFET. The output is low in the off state to provide direct interface to an N-channel device. The SG1842/43 is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG2842/43 is specified for the industrial range of -25°C to 85°C, and the SG3842/43 is designed for the commercial range of 0°C to 70°C.

Documents

Technical documentation and resources

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