# TP8525

**TPOWER** · LED Drivers · ESOP-8L

TP8525 from TPOWER, in a ESOP-8L. 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 | GND | power_in | Chip ground reference for the device. |
| 2 | VDD | power_in | Supply input with an internal 5.6 V zener clamp; the VDD-to-GND absolute maximum is -0.3 to +6 V, so a supply dropping resistor is required when the input voltage exceeds 5.6 V. |
| 3 | NC | unconnected | No internal connection. |
| 4 | SW | output | Drain of the internal power MOSFET; the SW-to-GND absolute maximum is -0.3 to +100 V. |
| 5 | CS | input | Output current sense pin; the LED average-current sense resistor is connected between CS and GND, with the internal reference at 200 mV for 100% brightness and 100 mV for 50% brightness. |
| 6 | MODE | input | High/low brightness mode select input (high = 50%, low = 100%); in high/low dimming applications it needs a 100 nF filter capacitor to GND, and it must not float, so it should be tied to VDD or GND when unused. |
| 7 | DIM | input | Analog dimming signal input with a dimming voltage range of 0.3 to 1.5 V, where the analog dimming turns off at 0.15 V and turns on at 0.2 V. |
| 8 | EN | input | Chip enable and PWM dimming signal input (high at 2.0 V minimum, low at 0.5 V maximum); a 10 to 100 nF filter capacitor to GND is required when dimming. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TPOWER |
| Package | ESOP-8L |
| 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 |
|---|---|---|---|---|---|---|---|
| VDD,CS,DIM,EN to GND voltage |  | -0.3 |  | 6 | V |  | 2 |
| MODE to GND voltage |  | -0.3 |  | 7 | V |  | 2 |
| SW to GND voltage |  | -0.3 |  | 100 | V |  | 2 |
| Power MOSFET output current |  |  |  | 3 | A |  | 2 |
| Power loss |  |  |  | 1.2 | W |  | 2 |
| Operating junction temperature range |  | -40 |  | 150 | ℃ |  | 2 |
| Storage temperature range |  | -40 |  | 150 | ℃ |  | 2 |
| ESD level (HBM) |  |  |  | 2000 | V |  | 2 |
| ESD level (MM) |  |  |  | 200 | V |  | 2 |
| Supply voltage | VIN | 5 |  | 100 | V | 正常工作 | 3 |
| Output current | ILED |  |  | 2.5 | A | 正常工作 | 3 |
| PWM dimming frequency | FPWM |  |  | 1000 | Hz | PWM 调光 | 3 |
| DIM analog dimming voltage range | VDIM | 0.3 |  | 1.5 | V |  | 3 |
| VDD input clamp voltage | VDD_CLP |  | 5.6 |  | V |  | 3 |
| Static operating current | ISTB |  | 405 |  | μA | VDD=5V | 3 |
| Undervoltage lockout, VDD rising | VUVLO |  | 3.2 |  | V |  | 3 |
| Undervoltage lockout hysteresis | VUVLO,HYS |  | 2.9 |  | V | VDD 下降 | 3 |
| Average current sense threshold at 100% brightness | VREF_100% |  | 200 |  | mV |  | 3 |
| Average current sense threshold at 50% brightness | VREF_50% |  | 100 |  | mV |  | 3 |
| Fixed off time | TOFF |  | 4.4 |  | μs | 100%亮度输出 | 3 |
| Power switch leading-edge blanking time | TLEB |  | 200 |  | ns |  | 3 |
| Maximum switching frequency | FSW_MAX |  | 220 |  | kHz |  | 3 |
| MODE pull-down resistance | RMODE |  | 35 |  | KΩ |  | 3 |
| MODE input high level | VMODE_H |  | 2.9 |  | V |  | 3 |
| MODE input low level | VMODE_L |  | 1.7 |  | V |  | 3 |
| MODE high-level clamp voltage | VMODE_CLP |  | 6.5 |  | V |  | 3 |
| EN pull-up resistance | REN |  | 200 |  | KΩ |  | 3 |
| EN/PWM dimming input high level | VEN_H |  | 2 |  | V |  | 3 |
| EN/PWM dimming input low level | VEN_L |  | 0.5 |  | V |  | 3 |
| DIM pull-up current | IDIM |  | 18 |  | μA |  | 3 |
| DIM analog dimming off voltage | VDIM_OFF |  | 0.15 |  | V |  | 3 |
| DIM analog dimming on voltage | VDIM_ON |  | 0.2 |  | V |  | 3 |
| Power switch on-resistance | RON |  | 0.1 |  | Ω | VGS=4.5V, ID=1A | 3 |
| Power switch drain-source breakdown voltage | VBR_DSS |  | 100 |  | V | VGS=0V, ID=250uA | 3 |
| Power switch leakage current | ILEAK |  | 1 |  | μA | VGS=0V, VDS=80V | 3 |
| Output current smart thermal control start temperature | TST |  | 130 |  | ℃ |  | 3 |
| Over-temperature protection temperature | TSD |  | 150 |  | ℃ |  | 3 |
| Over-temperature protection hysteresis | THYS |  | 130 |  | ℃ |  | 3 |

## CAD (KiCad official)

- Symbol: `TP8525`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8L (KiCad packages3D, STEP)
- 3D model files: `tp8525-etched.step` / `tp8525-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp8525.step` / `tp8525.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TPOWER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603383550343327744) (6 pp, sha256 `5ecf024f53b45966`, retrieved 2026-10-16, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/tp8525-datasheet.pdf)