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Hangzhou Silan Microelectronics SDH8634RoHS

Manufacturer
Hangzhou Silan MicroelectronicsAsian Brands
MPN
SDH8634
LCSC Part #
C250750
Packaging
DIP-8
Customer #
Key Attributes
65kHz DIP-8 Voltage Regulators - DC DC Switching Regulators RoHS
Datasheetpdf iconHangzhou Silan Microelectronics SDH8634
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QtyUnit Price(Reference Only)Total Amount
1+$ 0.1796$ 0.18
10+$ 0.175$ 1.75
50+$ 0.1735$ 8.68
100+$ 0.1704$ 17.04
Standard Packaging50/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerHangzhou Silan Microelectronics
PackagingDIP-8
Operating Temperature-25℃~+85℃
Frequency - Switching65kHz
Number of Outputs-
Function-
FeaturesHiccup current limiting;EMI optimization (spread spectrum);Cycle-by-cycle current limiting;Overcurrent Protection;Light load efficient mode
TopologyFlyback
Output Type-
Operating Voltage-
Switch tube (built-in/external)Built-in
Output Current-
Output Voltage-
Quiescent Current-
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Introduction

AI Translation

SDH8634 is a current-mode PWM+PFM controller for switching power supplies, integrating a high-voltage MOSFET, a high-voltage startup constant current source, and an external sampling resistor. SDH8634 features a built-in high-voltage startup constant current source with low standby power consumption < 30mW. Multiple control modes are supported: PWM mode under heavy load; PFM mode under light load to improve conversion efficiency; and hiccup mode under no-load condition to reduce standby power consumption. SDH8634 incorporates a frequency dithering function to reduce EMI. A built-in peak current compensation circuit ensures consistent maximum output power across different AC input voltages. The built-in soft-start function reduces transformer stress during power-up and prevents transformer saturation. SDH8634 integrates comprehensive protection features, including Leading Edge Blanking (LEB), cycle-by-cycle peak current limiting, VCC OVP, output OLP, and OTP. DIP-8-300-2.54

Features

AI Translation
  • High-voltage startup
  • Low standby power < 30mW
  • Multiple control modes
  • Frequency jitter
  • Peak current compensation
  • Soft start
  • Leading edge blanking (LEB)
  • Cycle-by-cycle peak current limiting
  • VCC OVP
  • Output OLP
  • OTP

Applications

AI Translation
  • Switching power supply