Microchip SG3845DM
Manufacturer No:
SG3845DM
Manufacturer:
Microchip
Package:
8-SOIC (0.154, 3.90mm Width)
Description:
Current Mode PWMs Isolated Switching Reg Low Start-Up Current (\u0026lt;1mA) 0\u0026#176;C to70\u0026#176;C
Quantity:
In Stock :7113
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Expected Shipping：Fri, May 29 - Sat, May 30, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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SG3845DM Information
Microchip SG3845DM technical specifications, attributes, parameters and parts with similar specifications to Microchip SG3845DM.
- Type
- Parameter
- Regulator Type
- HI Rel Switching Regulators
- Configuration
- Current Mode PWMs
- Supported Topology
- Power MOSFET Driver
- Supported Output
- 1
- Minimum Input Voltage (V)
- 30
- Maximum Input Voltage (V)
- 30
- Output Current (mA) Max
- 1000
- Maximum Frequency (kHz)
- 500
- Operating Temperature Range (°C)
- 0 to 70
- Vref (V)
- 5
- Type
- Parameter
- Duty Cycle Min (%)
- 0
- Duty Cycle Max (%)
- 48
- UVLO
- Yes
- Current Limit
- Yes
- Output Current
- 0
- Quiescent Current (mA) typ
- 0
- Switch current (A) typ
- 0
- SHUTDOWN Current (µA) (Typ)
- 0
- # of Outputs
- 0
- Vfb V (volt)
- 0
Download datasheets and manufacturer documentation for Microchip SG3845DM.
Certifications:
Application Notes:
Data Sheets:
The SG1844/45 family of control ICs provides all the required 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 Bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1844/45 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 Nchannel device. Both operate up to a maximum duty cycle range of zero to <50% due to an internal toggle flip-flop which blanks the output off every other clock cycle. The SG1844/45 is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG3844/45 is designed for the commercial range of 0°C to 70°C.
The Bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1844/45 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 Nchannel device. Both operate up to a maximum duty cycle range of zero to <50% due to an internal toggle flip-flop which blanks the output off every other clock cycle. The SG1844/45 is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG3844/45 is designed for the commercial range of 0°C to 70°C.
- Optimized For Off-Line Control
- Low Start-Up Current (<1mA)
- Automatic Feed Forward Compensation
- Trimmed Oscillator Discharge Current
- Pulse-By-Pulse Current Limiting
- Enhanced Load Response Characteristics -Undervoltage Lockout with 6V Hysteresis
- Double-Pulse Suppression
- High-Current Totem-Pole Output (1A Peak)
- Internally Trimmed Band-gap Reference
- 500kHz Operation SG1845 - 8.4 Volts
- Low Shoot-Through Current <75mA Over Temperature
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