# MP24833-AGN-Z

**Monolithic Power Systems** · LED Drivers · SOIC-8-EP

MP24833-AGN-Z from Monolithic Power Systems, 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 | VDD | power_in | Supply input that operates from a 4.5V-to-55V unregulated input (with respect to VSS), and an input capacitor is needed to prevent large voltage spikes at the input. |
| 2 | VSS | power_in | Power return and voltage reference for the regulated output, to be connected to the lowest potential in the circuit (typically the Schottky rectifier anode); the exposed pad is also connected to VSS. |
| 3 | OVP | input | Over-voltage protection input programmed by a voltage divider, where the switch turns off at the 2.43V shutdown threshold and normal operation requires programming from 0.2V to 2.43V. |
| 4 | FB | input | LED current feedback input that senses the current across the sensing resistor connected between FB and VSS, with a regulation voltage of 0.2V. |
| 5 | EN/DIM | input | On/off and dimming control input referenced to INGND that turns the chip on above 0.67V, supports analog dimming from 0.67V to 1.35V, and PWM dimming at 100Hz-2kHz with an amplitude greater than 1.5V. |
| 6 | INGND | power_in | Input ground reference that serves as the reference for the EN/DIM signal. |
| 7 | BST | passive | Bootstrap pin where a ceramic capacitor of 100nF or larger is connected between SW and BST to form a floating supply for the power switch driver. |
| 8 | SW | output | Switch output that is the source of the internal MOSFET, connected to the power inductor and the cathode of the rectifier diode. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | SOIC-8-EP |
| Category | LED Drivers |
| 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 |
|---|---|---|---|---|---|---|---|
| Feedback voltage | VFB | 0.19 | 0.2 | 0.21 | V | 4.5V ≤ VIN ≤ 55V | 4 |
| Feedback current | IFB | -100 |  | 100 | nA | VFB = 0.22V | 4 |
| Switch on resistance | RDS(ON) |  | 150 | 280 | mΩ |  | 4 |
| Current limit |  | 3 |  | 4.8 | A |  | 4 |
| Oscillator frequency | fSW | 145 | 210 | 275 | kHz |  | 4 |
| Maximum duty cycle |  | 85 | 91 | 97 | % |  | 4 |
| Minimum EN dimming threshold |  | 0.57 | 0.67 | 0.77 | V | VFB = 0V | 4 |
| Maximum EN dimming threshold |  | 1.23 | 1.35 | 1.47 | V | VFB = 0.2V | 4 |
| Under-voltage lockout threshold rising |  | 3 | 3.3 | 3.6 | V |  | 4 |
| Supply current (quiescent) | IQ |  | 0.6 | 0.8 | mA | VEN = 2V, VFB = 1V | 4 |
| Supply current (quiescent) at EN off | Ioff |  | 6 | 12 | μA | VEN = 0V | 4 |
| Open LED OV threshold | VOVP_th | 2.3 | 2.43 | 2.6 | V |  | 4 |
| Switch leakage |  |  | 1 |  | μA | VEN = 0V, VSW = 0V | 4 |
| Foldback frequency |  |  | 37 |  | kHz | VFB = 0V, VOVP = 0V | 4 |
| Minimum on time | tON |  | 100 |  | ns |  | 4 |
| Under voltage lockout threshold hysteresis |  |  | 200 |  | mV |  | 4 |
| EN input current |  |  | 2.1 |  | μA | VEN = 2V | 4 |
| EN off threshold (with respect to INGND) |  |  | 0.4 |  | V | VEN falling | 4 |
| EN on threshold (with respect to INGND) |  |  | 0.6 |  | V | VEN rising | 4 |
| Thermal shutdown |  |  | 150 |  | °C |  | 4 |
| Thermal shutdown recovery hysteresis |  |  | 15 |  | °C |  | 4 |
| Open LED OV hysteresis | VOVP_hys |  | 80 |  | mV |  | 4 |
| Supply voltage (VDD - VSS) | VDD-VSS | 4.5 |  | 55 | V |  | 3 |
| Maximum junction temperature | TJ |  |  | 125 | °C |  | 3 |
| Supply voltage (VDD - VSS) | VDD-VSS |  |  | 57 | V |  | 3 |
| VSW - VSS | VSW-VSS | -0.3 |  |  | V | Upper limit printed as VIN + 0.3V | 3 |
| VEN/DIM - VINGND | VEN/DIM-VINGND | -0.3 |  | 6 | V |  | 3 |
| VINGND - VSS | VINGND-VSS | -0.3 |  | 57 | V |  | 3 |
| Other pins - VSS |  | -0.3 |  | 6 | V |  | 3 |
| Continuous power dissipation | PD |  |  | 2.5 | W | TA = +25°C, SOIC-8 EP | 3 |
| Junction temperature | TJ |  |  | 150 | °C |  | 3 |
| Lead temperature |  |  |  | 260 | °C |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Thermal resistance junction-to-ambient | θJA |  | 50 |  | °C/W | SOIC-8 EP, JESD51-7 4-layer PCB | 3 |
| Thermal resistance junction-to-case | θJC |  | 10 |  | °C/W | SOIC-8 EP | 3 |

## CAD (KiCad official)

- Symbol: `MP24833-AGN-Z`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`
- 3D model: SOIC-8-EP (KiCad packages3D, STEP)
- 3D model files: `mp24833-agn-z-etched.step` / `mp24833-agn-z-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mp24833-agn-z.step` / `mp24833-agn-z.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Monolithic Power Systems datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590922719212871680) (14 pp, sha256 `3bc0d533d89b5928`, retrieved 2026-10-17, tier: lcsc)
- **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/mp24833-agn-z-datasheet.pdf)