LTC1261LIMS8#TRPBF

@@ -0,0 +1,72 @@+# LTC1261LIMS8#TRPBF++**Analog Devices** · DC-DC Converters · MSOP-8++LTC1261LIMS8#TRPBF from Analog Devices, in a MSOP-8. 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 | VCC | power_in | Positive power supply input, 2.7V to 5.25V. Must be bypassed to ground with at least a 1µF capacitor placed close to the pin. |+| 2 | C1+ | passive | Flying capacitor positive terminal. Connect a 0.1µF ceramic capacitor between C1+ and C1- to form the charge-pump flying capacitor. |+| 3 | C1- | passive | Flying capacitor negative terminal. Connect a 0.1µF ceramic capacitor from C1+ to C1- to form the charge-pump flying capacitor. |+| 4 | GND | power_in | Device ground. Connect to a low-impedance ground; a ground plane helps minimize output regulation errors. |+| 5 | ADJ/COMP | input | Output adjust / feedback pin on adjustable parts (LTC1261L) - an external resistor divider from OUT to GND sets the regulated negative output voltage using the internal 1.23V reference (typical divider current ≥10µA). On fixed-voltage parts (LTC1261L-4, LTC1261L-4.5) the divider is internal and this pin acts as COMP; a ~100pF capacitor to ground provides loop compensation to reduce output ripple. |+| 6 | OUT | power_out | Regulated negative voltage output (down to -5V, up to 20mA). Bypass to ground with a 1µF or larger capacitor; capacitor value and ESR strongly affect output ripple. |+| 7 | REG | output | Open-drain power-valid / regulation-good status output. Pulls low when the output magnitude is within 5% of the set value; requires an external pull-up (REG will not drive high on its own). Sinks 5mA at VCC = 5V (4mA at VCC = 3.3V); pull-up may exceed VCC up to 6V above ground. |+| 8 | SHDN | input | Active-high shutdown input. When low (or floating - internal 5µA pull-down keeps it low), the LTC1261L operates normally; when pulled high the charge pump is disabled, OUT collapses to 0V, and quiescent current drops to ~5µA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices |+| Package | MSOP-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `LTC1261LIMS8#TRPBFLCMS8#PBF`+- `LTC1261LIMS8#TRPBFLCMS8#TRPBF`+- `LTC1261LIMS8#PBF`+- `LTC1261LIMS8#TRPBF`+- `LTC1261LIMS8#TRPBFLCMS8-4#PBF`+- `LTC1261LIMS8#TRPBFLCMS8-4#TRPBF`+- `LTC1261LIMS8-4#PBF`+- `LTC1261LIMS8-4#TRPBF`+- `LTC1261LIMS8#TRPBFLCMS8-4.5#PBF`+- `LTC1261LIMS8#TRPBFLCMS8-4.5#TRPBF`+- `LTC1261LIMS8-4.5#PBF`+- `LTC1261LIMS8-4.5#TRPBF`+- `LTC1261LIMS8#TRPBFLCS8#PBF`+- `LTC1261LIMS8#TRPBFLCS8#TRPBF`+- `LTC1261LIMS8#TRPBFLIS8#PBF`+- `LTC1261LIMS8#TRPBFLIS8#TRPBF`+- `LTC1261LIMS8#TRPBFLCS8-4#PBF`+- `LTC1261LIMS8#TRPBFLCS8-4#TRPBF`+- `LTC1261LIMS8#TRPBFLIS8-4#PBF`+- `LTC1261LIMS8#TRPBFLIS8-4#TRPBF`+- `LTC1261LIMS8#TRPBFLCS8-4.5#PBF`+- `LTC1261LIMS8#TRPBFLCS8-4.5#TRPBF`+- `LTC1261LIMS8#TRPBFLIS8-4.5#PBF`+- `LTC1261LIMS8#TRPBFLIS8-4.5#TRPBF`++## CAD (KiCad official)++- Symbol: `LTC1261LIMS8#TRPBF`+- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`+- 3D model: MSOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589864262404370432) (14 pp, sha256 `336624392408a8a5`, retrieved 2026-08-17, tier: lcsc)+- **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).++[Datasheet PDF](docs/ltc1261lims8-trpbf-datasheet.pdf)

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