# LT8302IS8E-3#PBF

**Analog Devices** · DC-DC Converters · SOIC-8-EP

LT8302IS8E-3#PBF from Analog Devices, in a SOIC-8-EP. 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 | EN/UVLO | input | Pull below 0.3V to shut down the device; the accurate 1.214V threshold can program a VIN UVLO with 2.5µA hysteresis current, and tie to VIN if unused. |
| 2 | INTVCC | power_out | Internal 3V linear regulator output supplied from VIN; do not overdrive with an external supply and bypass locally with a minimum 1µF ceramic capacitor. |
| 3 | VIN | power_in | Input supply pin for internal circuitry and the reference for the RFB feedback circuit; bypass locally to ground with a capacitor. |
| 4 | GND | power_in | Ground reference pin; connect to the ground plane together with the exposed pad. |
| 5 | SW | output | Drain of the internal 65V, 3.6A DMOS power switch; minimize trace area at this pin to reduce EMI and voltage spikes. |
| 6 | RFB | input | Input for the external feedback resistor connected to the transformer primary; the RFB to RREF ratio sets the output voltage, and trace area should be minimized. |
| 7 | RREF | input | Input for an external ground-referred reference resistor, nominally 10k and usable from 9.09k to 11.0k. |
| 8 | TC | output | Proportional-to-absolute-temperature output at 3.35mV/°K, equal to 1V at 25°C; a resistor from TC to RREF compensates the output diode temperature coefficient. |
| 9 | GND | power_in | Exposed pad is ground and must be soldered directly to the ground plane for electrical and thermal contact. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8-EP |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN Voltage Range | VIN | 3 |  | 42 | V | full operating temperature range | 3 |
| VIN Quiescent Current (shutdown) | IQ |  | 0.5 | 2 | µA | VEN/UVLO = 0.2V | 3 |
| VIN Quiescent Current (sleep mode) | IQ |  | 106 |  | µA | VEN/UVLO = 1.1V, Sleep Mode (Switch Off) | 3 |
| VIN Quiescent Current (active mode) | IQ |  | 380 |  | µA | VEN/UVLO = 1.1V, Active Mode (Switch On) | 3 |
| EN/UVLO Shutdown Threshold For Lowest Off IQ |  | 0.2 |  | 0.75 | V | full operating temperature range | 3 |
| EN/UVLO Enable Threshold Falling (E, I, H, MP Grades) |  | 1.178 | 1.214 | 1.25 | V | full operating temperature range | 3 |
| EN/UVLO Enable Hysteresis |  |  | 14 |  | mV |  | 3 |
| EN/UVLO Hysteresis Current | IHYS | -0.1 | 0 | 0.1 | µA | VEN/UVLO = 0.3V | 3 |
| EN/UVLO Hysteresis Current | IHYS | 2.3 | 2.5 | 2.7 | µA | VEN/UVLO = 1.1V | 3 |
| INTVCC Regulation Voltage | VINTVCC | 2.85 | 3 | 3.1 | V | IINTVCC = 0mA to 10mA | 3 |
| INTVCC Current Limit | IINTVCC | 10 | 13 | 20 | mA | VINTVCC = 2.8V | 3 |
| INTVCC UVLO Threshold Falling |  | 2.39 | 2.47 | 2.55 | V |  | 3 |
| INTVCC UVLO Hysteresis |  |  | 105 |  | mV |  | 3 |
| (RFB, VIN) Voltage |  | -50 |  | 50 | mV | IRFB = 75µA to 125µA | 3 |
| RREF Regulation Voltage |  | 0.98 | 1 | 1.02 | V | full operating temperature range | 3 |
| RREF Regulation Voltage Line Regulation |  | -0.01 | 0 | 0.01 | %/V | 3V ≤ VIN ≤ 42V | 3 |
| TC Pin Voltage | VTC |  | 1 |  | V |  | 3 |
| TC Pin Current | ITC | 7 | 10 | 13 | µA | VTC = 1.2V (LT8302-3) | 3 |
| TC Pin Current | ITC |  | -200 |  | µA | VTC = 0.8V | 3 |
| Minimum Switching Frequency | fMIN | 11.3 | 12 | 12.7 | kHz |  | 3 |
| Minimum Switch-On Time | tON(MIN) |  | 160 |  | ns |  | 3 |
| Maximum Switch-Off Time | tOFF(MAX) |  | 170 |  | µs | Backup Timer | 3 |
| Maximum Switch Current Limit | ISW(MAX) | 3.6 | 4.5 | 5.4 | A |  | 3 |
| Minimum Switch Current Limit | ISW(MIN) | 0.7 | 0.87 | 1.04 | A |  | 3 |
| Switch On-Resistance | RDS(ON) |  | 80 |  | mΩ | ISW = 1.5A | 3 |
| Switch Leakage Current | ILKG |  | 0.1 | 0.5 | µA | VSW = 65V | 3 |
| Soft-Start Timer | tSS |  | 11 |  | ms |  | 3 |
| SW voltage | SW |  |  | 65 | V | Note 2 | 2 |
| VIN voltage | VIN |  |  | 42 | V |  | 2 |
| Current Into RFB |  |  |  | 200 | µA |  | 2 |
| INTVCC, RREF, TC voltage |  |  |  | 4 | V |  | 2 |
| Operating Junction Temperature Range (LT8302I-3) | TJ | -40 |  | 125 | °C | Notes 3, 4 | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 2 |
| Thermal Resistance Junction-to-Ambient | θJA |  | 33 |  | °C/W | S8E package | 2 |

## CAD (KiCad official)

- Symbol: `LT8302IS8E-3#PBF`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`
- 3D model: SOIC-8-EP (KiCad packages3D, STEP)
- 3D model files: `lt8302is8e-3-pbf-etched.step` / `lt8302is8e-3-pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt8302is8e-3-pbf.step` / `lt8302is8e-3-pbf.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Analog Devices datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/LT8302-8302-3.pdf) (26 pp, sha256 `08515683bcc0fb0a`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lt8302is8e-3-pbf-datasheet.pdf)