component
RT7737GGE
Public Unreviewedby Ray
Richtek Tech AC-DC Controllers and Regulators, SOT-23-6. Datasheet-verified pinout, 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
markdownRT7737GGE
Richtek Tech · AC-DC Controllers and Regulators · SOT-23-6
RT7737GGE from Richtek Tech, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BURST | input | Programmable burst switching green mode / burst mode level input. Sets the burst threshold via an external resistor (RBS in the application circuit). Pin number inferred from typical Richtek SOT-23-6 flyback controller ordering; verify against pin configuration diagram. |
| 2 | COMP | input | Loop compensation / feedback input, typically driven by an optocoupler collector for secondary-side feedback. Pin number inferred; verify. |
| 3 | GND | power_in | Signal and power ground reference for the controller. |
| 4 | CS | input | Current-sense input from the MOSFET source resistor (RCS_RC in the application circuit). Used for cycle-by-cycle current limit and over-load protection; also monitored for CS-pin open protection. |
| 5 | GATE | output | Gate driver output for the primary-side power MOSFET. Driver capability 200mA source / 300mA sink. |
| 6 | VDD | power_in | Controller bias supply, typically fed from an auxiliary winding through a rectifier and bulk capacitor. Protected by UVLO and VDD over-voltage protection (OVP). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | SOT-23-6 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
RT7737GGE
CAD (KiCad official)
- Symbol:
RT7737GGE - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (1 pp, sha256
4954224f6f16202f, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).