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AOZ6605PI-1
Public Made by Adomby adom
Alpha & Omega Semicon DC-DC Converters, ESOP-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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Contents
README
markdownAOZ6605PI-1
Alpha & Omega Semicon · DC-DC Converters · ESOP-8
AOZ6605PI-1 from Alpha & Omega Semicon, in a ESOP-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 | SS | passive | Soft start pin; a capacitor to ground programs the soft-start time (TSS = Css x 0.6V / 5uA). |
| 2 | EN | input | Active-high enable pin; must be above 2V to enable and below 0.6V to disable, connect to VIN if unused and do not leave open. |
| 3 | VIN | power_in | Supply voltage input, 4.5V to 18V operating range; device starts up when VIN rises above the UVLO threshold and EN is high. |
| 4 | GND | power_in | Power ground. |
| 5 | BST | passive | Bootstrap pin requiring a capacitor between LX and BST to form a floating supply across the high-side switch driver. |
| 6 | VCC | power_out | Internal 5V LDO regulator output. |
| 7 | COMP | passive | External loop compensation pin; connect an RC network between COMP and GND to compensate the control loop. |
| 8 | FB | input | Feedback input (0.6V reference) used to set the output voltage via a resistive divider between output and GND. |
| 9 | LX | passive | Exposed pad; switching node connected to the internal high-side FET source and low-side FET drains, to be connected to a large copper plane for thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Alpha & Omega Semicon |
| Package | ESOP-8 |
| Category | Power Management ICs |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VIN | 4.5 | 18 | V | 3 | ||
| Input UVLO Threshold (rising) | VUVLO | 3.3 | 4 | V | VIN rising | 3 | |
| Input UVLO Threshold (falling) | VUVLO | 3.7 | V | VIN falling | 3 | ||
| VCC Load Regulation | VCC | 3 | % | ICC = 5mA | 3 | ||
| Supply Current (Quiescent) | IIN | 250 | µA | IOUT = 0A | 3 | ||
| Shutdown Supply Current | IOFF | 1 | 10 | µA | VEN = 0V, -40°C < TJunction < 125°C | 3 | |
| Feedback Voltage | VFB | 0.591 | 0.6 | 0.609 | V | TA = 25°C | 3 |
| Load Regulation | RO | 0.5 | % | PWM mode, 1A < ILoad < 5A | 3 | ||
| Line Regulation | SV | 1 | % | 4.5V < VIN < 18V | 3 | ||
| Feedback Input Current | IFB | 200 | nA | 3 | |||
| EN Input Threshold (on) | VEN | 2 | V | On threshold, -40°C < TJunction < 125°C | 3 | ||
| EN Input Threshold (off) | VEN | 0.6 | V | Off threshold, -40°C < TJunction < 125°C | 3 | ||
| EN Input Hysteresis | VHYS | 300 | mV | 3 | |||
| EN Input Current | IEN | 5 | µA | VEN = 5V | 3 | ||
| SS Time | tSS | 0.9 | 2 | 3.7 | ms | CSS = 22nF | 3 |
| Frequency | fO | 500 | 600 | 650 | kHz | 3 | |
| Maximum Duty Cycle | DMAX | 85 | % | 3 | |||
| Controllable Minimum Duty Cycle | DMIN | 6.5 | % | 3 | |||
| Error Amplifier Transconductance | Gma | 300 | 400 | 500 | µA/V | 4 | |
| Current Limit | ILIM | 6 | 6.5 | A | 4 | ||
| Over Voltage Protection Off threshold | VOVP | 720 | mV | Off threshold | 4 | ||
| Over Voltage Protection On threshold | VOVP | 620 | mV | On threshold | 4 | ||
| Over-temperature Shutdown Limit (rising) | TOTP | 150 | °C | TJ rising | 4 | ||
| Over-temperature Shutdown Limit (falling) | TOTP | 100 | °C | TJ falling | 4 | ||
| High-Side Switch On-Resistance | RH | 53 | mΩ | VBST-LX = 5V | 4 | ||
| Low-Side Switch On-Resistance | RL | 26 | mΩ | VCC = 5V | 4 | ||
| Supply Voltage (VIN), EN | VIN | 20 | V | 3 | |||
| LX to GND | LX | -0.7 | V | upper limit VIN+0.3V | 3 | ||
| LX to GND (20ns) | LX | -5 | 22 | V | 20ns | 3 | |
| VCC, FB, COMP to GND | -0.3 | 6 | V | 3 | |||
| VBST to LX | VBST | 6 | V | 3 | |||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature | TS | -65 | 150 | °C | 3 | ||
| ESD Rating | 2 | kV | Human body model 1.5k series 100pF | 3 | |||
| Supply Voltage (operating) | VIN | 4.5 | 18 | V | 3 | ||
| Ambient Temperature | TA | -40 | 85 | °C | 3 | ||
| Package Thermal Resistance EPAD SO8 | θJA | 40 | °C/W | 1-in2 FR-4 four layer board, 2oz copper, still air, TA = 25°C | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | Connect a large copper plane to LX pin to help thermal dissipation. | 13 |
CAD (KiCad official)
- Symbol:
AOZ6605PI-1 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
aoz6605pi-1-etched.step/aoz6605pi-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aoz6605pi-1.step/aoz6605pi-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Alpha & Omega Semicon datasheet (16 pp, sha256
c8d66c0ccc265e3f, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).