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SDH8635
Public Made by Adomby adom
Hangzhou Silan Microelectronics AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSDH8635
Hangzhou Silan Microelectronics · AC-DC Controllers And Regulators · DIP-8
SDH8635 from Hangzhou Silan Microelectronics, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference pin for the controller and the primary-side circuit. |
| 2 | CS | input | Current sense input for the cycle-by-cycle peak current limit; the limit starts at 0.45 V at D=0 and clamps at 0.7 V, with absolute maximum voltage of -0.3 V to 7 V. |
| 3 | VCC | power_in | Supply pin that receives high-voltage start-up charging (3.5 mA) and runs the controller; it starts at 16.5 V typical, stops at 8.9 V, has overvoltage protection at 25.5 V, and VCCMAX is 28 V. |
| 4 | FB | input | Feedback input that sets the PWM, PFM and burst-mode operating points and the overload trigger at 4.45 V; its absolute maximum voltage is -0.3 V to 7 V and its input impedance is 50 kΩ typical. |
| 5 | NC | unconnected | No internal connection; the pin is left floating. |
| 6 | DRAIN | bidirectional | Drain of the integrated power MOSFET, rated for 650 V BVDSS with 7.0 A continuous drain current at Tamb=25°C and 20 A pulsed current. |
| 7 | DRAIN | bidirectional | Drain of the integrated power MOSFET, rated for 650 V BVDSS with 7.0 A continuous drain current at Tamb=25°C and 20 A pulsed current. |
| 8 | DRAIN | bidirectional | Drain of the integrated power MOSFET, rated for 650 V BVDSS with 7.0 A continuous drain current at Tamb=25°C and 20 A pulsed current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Hangzhou Silan Microelectronics |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-source breakdown voltage | BVDSS | 650 | V | VGS=0V，ID=50A | 3 | ||
| Zero-gate-voltage drain current | IDSS | 50 | A | VDS=650V，VGS=0V | 3 | ||
| Zero-gate-voltage drain current at high temperature | IDSS | 200 | A | VDS=480V，VGS=0V，Tamb=125C | 3 | ||
| Static drain-source on-resistance | RDS(ON) | 1.1 | 1.6 | 2.1 | VGS=10V，ID=3A | 3 | |
| Off-state leakage current (high-voltage start pin) | IHVS | 5 | µA | VCC=18V | 3 | ||
| VCC turn-on voltage | VCCSTARTUP | 15 | 16.5 | 18 | V | 3 | |
| VCC turn-off voltage | VCCSTOP | 8 | 8.9 | 9.8 | V | 3 | |
| Normal operating oscillation frequency | fOSC_NORMAL | 60 | 65 | 70 | KHz | VFB=4V | 3 |
| Frequency jitter range | ΔfOSC_JITTER | -6 | 6 | % | 3 | ||
| Oscillation frequency change with temperature | 5 | % | 25C≤Tamb≤+85C | 3 | |||
| Drain-source voltage (VDS) rating, gate-drain voltage with RGS=1M | VDGR | 650 | V | RGS=1M | 2 | ||
| Gate-source (to ground) voltage | VGS | -30 | 30 | V | 2 | ||
| Drain current pulse | IDM | 20 | A | Pulse width limited by maximum junction temperature (note 1) | 2 | ||
| Drain continuous current | ID | 7 | A | Tamb=25C | 2 | ||
| Single-pulse avalanche energy | EAS | 350 | mJ | L=51mH, TJ=25C (start) (note 2) | 2 | ||
| Supply voltage maximum | VCCMAX | 28 | V | 2 | |||
| Feedback input voltage | VFB | -0.3 | 7 | V | 2 | ||
| Current sense input voltage | VCS | -0.3 | 7 | V | 2 | ||
| Operating junction temperature | TJ | 150 | C | 2 | |||
| Operating ambient temperature range | Tamb | -25 | 85 | C | 2 | ||
| Storage temperature range | TSTG | -55 | 150 | C | 2 |
CAD (KiCad official)
- Symbol:
SDH8635 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
sdh8635-etched.step/sdh8635-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sdh8635.step/sdh8635.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Hangzhou Silan Microelectronics datasheet (10 pp, sha256
7cc42e51bf9ec903, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).