HSMC3842

Features: • Trimmed Oscillator for Precise Frequency Control• Oscillator Frequency Guaranteed at 250 kHz• Current Mode Operation to 500 kHz• Automatic Feed Forward Compensation• Latching PWM for Cycle-By-Cycle Current Limiting• Internally Trimmed Reference with ...

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SeekIC No. : 004366218 Detail

HSMC3842: Features: • Trimmed Oscillator for Precise Frequency Control• Oscillator Frequency Guaranteed at 250 kHz• Current Mode Operation to 500 kHz• Automatic Feed Forward Compensati...

floor Price/Ceiling Price

Part Number:
HSMC3842
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Latching PWM for Cycle-By-Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current



Specifications

Symbol
Parameter
Value
Unit
Vi
Supply Voltage (low impedance source)
30
V
Supply Voltage (Ii<30mA)
Self Limiting
Io
Output Current
±1
A
Eo
Output Energy (capacitive load)
5
uJ
Analog Inputs (pin 2, 3)
-0.3 to 5.5
V
Error Amplifier Output Sink Current
10
mA
Ptot
Power Dissipation at Tamb25oC
1.25
mW
Tstg
Storage Temperature Range
-65 to 150
oC
TJ
Junction Operating Temperature
-40 to 150
oC
TL
Lead Temperature (soldering 10s)
300
oC



Description

The H3842P/HSMC3842 are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and DC To DC converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits HSMC3842 feature a trimmed oscillator for precise duty cycle control. A temperature compensa-ted reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage  ockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering.




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