component
PAM2841SR
Public Made by Adomby adom
Diodes Incorporated LED Drivers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdownPAM2841SR
Diodes Incorporated · LED Drivers · MSOP-8
PAM2841SR from Diodes Incorporated, in a MSOP-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 | PGND | power_in | Power ground, kept as a separate trace from signal ground and joined to it at a quiet ground point. |
| 2 | VIN | power_in | Input voltage supply pin, 2.7V to 5.5V supply range, with an input capacitor of at least 1µF placed close to it. |
| 3 | ENA | input | Active-high chip enable (high ≥1.2V on, low ≤0.4V shutdown) that also accepts a 100Hz to 200Hz PWM dimming signal. |
| 4 | Comp | passive | Compensation node, which can be pulled down by an N-MOSFET for PWM dimming at 100Hz to 500Hz. |
| 5 | GND | power_in | Chip (signal) ground, to be kept close to the IC and the input capacitor. |
| 6 | FB | input | Feedback pin regulating to a 200mV (194mV to 206mV) feedback voltage across the LED current-sense resistor. |
| 7 | OVP | input | Overvoltage protection sense input with a 1.2V open-load threshold. |
| 8 | SW | passive | Drain of the main switch, rated to 40V maximum with a 1.5A current limit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | MSOP-8 |
| Category | Driver ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Quiescent Current | IQ | 200 | 300 | µA | No Switching | 4 | |
| Shutdown Current | ISD | 1 | µA | VENA = Low | 4 | ||
| Supply-Voltage Range | VDD | 2.7 | 5.5 | V | 4 | ||
| Output-Voltage Range | VO | 40 | V | min is VIN x 1.1 | 4 | ||
| Feedback Voltage | VFB | 194 | 200 | 206 | mV | VENA = High | 4 |
| SW On-Resistance | RDS(ON) | 0.35 | 0.5 | Ω | ISW = 100mA | 4 | |
| SW Frequency | fSW | 0.7 | 1 | 1.3 | MHz | 4 | |
| Enable Threshold Voltage, Chip Shutdown | VEL | 0.4 | V | Chip Shutdown | 4 | ||
| Enable Threshold Voltage, Chip On | VEH | 1.2 | V | Chip On | 4 | ||
| Undervoltage Lockout | UVLO | 2 | 2.2 | 2.4 | V | VIN Falling | 4 |
| Output Current | IO | 40 | mA | R3 = 5.1Ω | 4 | ||
| Output Current | IO | 30 | mA | R3 = 6.8Ω | 4 | ||
| Output Current | IO | 20 | mA | R3 = 10Ω | 4 | ||
| Output Current | IO | 10 | mA | R3 = 20Ω | 4 | ||
| SW Current Limit | ILIM | 1.5 | A | Switch On | 4 | ||
| Maximum Duty Cycle | DC | 95 | % | 4 | |||
| Overvoltage Protection Threshold | OVP | 1.2 | V | Open Load | 4 | ||
| UVLO Hysterisis | VTH | 0.2 | V | 4 | |||
| Overtemperature Shutdown | OTS | 150 | °C | 4 | |||
| Overtemperature Hysterisis | OTH | 30 | °C | 4 | |||
| Supply Voltage | 6 | V | TA = +25°C | 3 | |||
| Maximum SW Pin Voltage | 40 | V | TA = +25°C | 3 | |||
| Storage Temperature | -65 | 170 | °C | 3 | |||
| Maximum Junction Temperature | 170 | °C | 3 | ||||
| Soldering Temperature | 300 | °C | 5sec | 3 | |||
| Supply-Voltage Range | 2.8 | 5.5 | V | TA = +25°C | 3 | ||
| Operation Temperature Range | -40 | 85 | °C | 3 | |||
| Junction Temperature Range | -40 | 150 | °C | 3 | |||
| Thermal Resistance (Junction to Ambient) | θJA | 180 | °C/W | MSOP-8 | 3 | ||
| Thermal Resistance (Junction to Case) | θJC | 75 | °C/W | MSOP-8 | 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 | tin | Terminals: Matte Tin plated Leads, Solderable per M2003 JESD22-B102 Weight: 0.027 grams (Approximate) | 14 |
CAD (KiCad official)
- Symbol:
PAM2841SR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
pam2841sr-etched.step/pam2841sr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pam2841sr.step/pam2841sr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (15 pp, sha256
8c303b145bcb031d, retrieved 2026-10-22, tier: manufacturer) - 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).