component
RT5788BGJ8F
Public Made by Adomby adom
Richtek Tech DC-DC Converters, TSOT-23-8. 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
markdownRT5788BGJ8F
Richtek Tech · DC-DC Converters · TSOT-23-8
RT5788BGJ8F from Richtek Tech, in a TSOT-23-8. 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 | PGOOD | output | Open-drain power-good indication output that is activated after soft-start is finished. |
| 2 | VIN | power_in | Power input with a 2.5V to 6V input voltage range; a bypass capacitor typically greater than 10μF should be connected between this pin and PGND, placed as close to the IC as possible. |
| 3 | LX | output | Switch node between the internal switch and the synchronous rectifier, with the output LC filter connected from this pin to the output load. |
| 4 | PGND | power_in | Power ground, connected to analog ground, that must be soldered to a large PCB copper area for maximum power dissipation. |
| 5 | VOUT | input | Output voltage sense input used to monitor and adjust the output voltage to enhance load transient regulation. |
| 6 | AGND | power_in | Analog ground providing the return path for the control circuitry and internal reference, to be connected to a clean inner GND point with a separate trace. |
| 7 | FB | input | Feedback voltage input connected to the midpoint of the external resistive divider; the device regulates FB at a typical feedback reference of 0.6V. |
| 8 | EN | input | Enable control input where a logic-high enables the converter and a logic-low forces the device into shutdown mode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | TSOT-23-8 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Operating Voltage | VIN | 2.5 | 6 | V | 7 | ||
| Under-Voltage Lockout Threshold | VUVLO | 2.15 | 2.3 | 2.45 | V | 7 | |
| Shutdown Current | ISHDN | 0 | 1 | μA | VEN = 0V | 7 | |
| Enable Threshold Voltage (rising) | VENH | 1.2 | V | VEN rising | 7 | ||
| Enable Threshold Voltage (falling) | VENL | 0.4 | V | VEN falling | 7 | ||
| Feedback Voltage | VFB | 0.591 | 0.6 | 0.609 | V | 2.5V ≤ VIN ≤ 6V | 7 |
| Low-Side Switch Valley Current Limit | ILIM_L | 4 | 5.5 | 7.3 | A | 7 | |
| Switching Frequency | fSW | 1300 | 1500 | 1700 | kHz | VOUT = 1.2V | 7 |
| Fixed Soft-Start Time | tSS | 1 | 1.5 | ms | 7 | ||
| Power Good Sink Current Capability | 0.4 | V | IPGOOD sinks 1mA | 8 | |||
| Supply Input Voltage (recommended) | VIN | 2.5 | 6 | V | 6 | ||
| Junction Temperature Range | -40 | 125 | °C | 6 | |||
| Ambient Temperature Range | -40 | 85 | °C | 6 | |||
| Supply Input Voltage (absolute maximum) | VIN | -0.3 | 7 | V | 6 | ||
| LX Pin Switch Voltage | -0.3 | V | Upper limit printed as (VIN + 0.3V) | 6 | |||
| LX Pin Switch Voltage (<10ns) | -5 | 8.5 | V | <10ns | 6 | ||
| Other Pins | -0.3 | V | Upper limit printed as (VIN + 0.3V) | 6 | |||
| Junction Temperature | 150 | °C | 6 | ||||
| Lead Temperature (Soldering) | 260 | °C | 10 sec. | 6 | |||
| Storage Temperature Range | -65 | 150 | °C | 6 | |||
| Junction-to-ambient thermal resistance (JEDEC standard) | θJA | 95.2 | °C/W | JEDEC standard | 6 | ||
| Junction-to-case (top) thermal resistance | θJC(Top) | 3.3 | °C/W | 6 | |||
| Junction-to-case (bottom) thermal resistance | θJC(Bottom) | 4.6 | °C/W | 6 | |||
| Junction-to-ambient thermal resistance (specific EVB) | θJA(EVB) | 73.9 | °C/W | specific EVB | 6 | ||
| Junction-to-top characterization parameter | ΨJC(Top) | 13 | °C/W | 6 | |||
| Junction-to-board characterization parameter | ΨJB | 53.8 | °C/W | 6 |
CAD (KiCad official)
- Symbol:
RT5788BGJ8F - Footprint:
Package_TO_SOT_SMD:TSOT-23-8 - 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files:
rt5788bgj8f-etched.step/rt5788bgj8f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt5788bgj8f.step/rt5788bgj8f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (20 pp, sha256
db05ebfb06e71fd7, retrieved 2026-10-17, tier: lcsc) - 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).