CS3844N, CS3844N/B, CS3845 Selling Leads, Datasheet
MFG:DIP Package Cooled:N/A D/C:96/97
CS3844N, CS3844N/B, CS3845 Datasheet download
Part Number: CS3844N
MFG: DIP
Package Cooled: N/A
D/C: 96/97
CS3844N, CS3844N/B, CS3845
- Table of contents:
Info of CS3844N
Info of CS3844N/B
Info of CS3845
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About CS30
PDF/DataSheet Download
Datasheet: CS30
File Size: 58566 KB
Manufacturer: IXYS [IXYS Corporation]
Download : Click here to Download
About CS30
PDF/DataSheet Download
Datasheet: CS30
File Size: 58566 KB
Manufacturer: IXYS [IXYS Corporation]
Download : Click here to Download
About CS3845
PDF/DataSheet Download
Datasheet: CS3845
File Size: 83701 KB
Manufacturer: ON SEMICONDUCTOR
Download : Click here to Download
CS3845 General Description
The CS3844/45 provides all the necessary features to implement off-line fixed frequency current-mode control with a minimum number of external components.
The CS3844 family incorporates a new precision temperature-controlled oscillator to minimize variations in frequency. An internal toggle flip-flop, which blanks the output every other clock cycle, limits the duty-cycle range to less than 50%. An undervoltage lockout ensures that VREF is stabilized before the output stage is enabled. In the CS2844/CS3844 turn on occurs at 16V and turn off at 10V. In the CS2845/CS3845 turn on is at 8.4V and turn off at 7.6V.
Other features include low start-up current, pulse-by-pulse current limiting, and a high-current totem pole output for driving capacitive loads, such as gate of a power MOSFET. The output is low in the off state, consistent with N-channel devices.
CS3845 Maximum Ratings
Supply Voltage (ICC<30mA)......................................................................... .... Self Limiting
Supply Voltage (Low Impedance Source) ..................................................................... 30V
Output Current..............................................................................................................±1A
Output Energy (Capacitive Load)......................................................................................5J
Analog Inputs (VFB, VSENSE) ...........................................................................-0.3V to 5.5V
Error Amp Output Sink Current ....................................................................................10mA
Lead Temperature Soldering
Wave Solder (through hole styles only) ......................................10 sec. max, 260°C peak
Reflow (SMD styles only) ....................................60 sec. max above 183°C, 230°C peak
Supply Voltage (Low Impedance Source) ..................................................................... 30V
Output Current..............................................................................................................±1A
Output Energy (Capacitive Load)......................................................................................5J
Analog Inputs (VFB, VSENSE) ...........................................................................-0.3V to 5.5V
Error Amp Output Sink Current ....................................................................................10mA
Lead Temperature Soldering
Wave Solder (through hole styles only) ......................................10 sec. max, 260°C peak
Reflow (SMD styles only) ....................................60 sec. max above 183°C, 230°C peak
CS3845 Features
· Optimized for Offline Control
· Temp. Compensated Oscillator
· 50% Max Duty-cycle Clamp
· VREF Stabilized before Output Stage is Enabled
· Low Start-up Current
· Pulse-by-pulse Current Limiting
· Improved Undervoltage Lockout
· Double Pulse Suppression
· 1% Trimmed Bandgap Ref.
· High Current Totem Pole Output
· Temp. Compensated Oscillator
· 50% Max Duty-cycle Clamp
· VREF Stabilized before Output Stage is Enabled
· Low Start-up Current
· Pulse-by-pulse Current Limiting
· Improved Undervoltage Lockout
· Double Pulse Suppression
· 1% Trimmed Bandgap Ref.
· High Current Totem Pole Output
CS3845 Connection Diagram
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