# LMH6525SP

**Texas Instruments** · Laser Drivers · UQFN-28(5x5)

LMH6525SP from Texas Instruments, in a UQFN-28(5x5). 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 | IOUTA | output | Laser driver output channel A, selected by the SEL pin and summing the active channel currents. |
| 2 | ENOSC | input | LVDS oscillator enable pin; internal oscillator is activated if the logical input is high. |
| 3 | ENOSCB | input | LVDS oscillator enable pin B (LMH6525 only); internal oscillator is activated if the logical input is low. |
| 4 | ENR | input | Read channel enable pin; read channel is active if pin is high. |
| 5 | ENABLE | input | Chip enable pin; chip is enabled if pin is high, and all outputs are off when low. |
| 6 | VDDA | power_in | Supply voltage A (5V single-supply operation). |
| 7 | GNDA | power_in | Ground connection A. |
| 8 | IR | input | Read channel current setting; 1 mA input current results in 150 mA output current. |
| 9 | I2 | input | Channel 2 current setting; 1 mA input current results in 300 mA output current. |
| 10 | I3 | input | Channel 3 current setting; 1 mA input current results in 150 mA output current. |
| 11 | I4 | input | Channel 4 current setting; 1 mA input current results in 150 mA output current. |
| 12 | RFA | passive | Oscillator frequency setting channel A, set by external resistor to ground. |
| 13 | RFB | passive | Oscillator frequency setting channel B, set by external resistor to ground. |
| 14 | RAA | passive | Oscillator amplitude setting channel A, set by external resistor to ground. |
| 15 | RAB | passive | Oscillator amplitude setting channel B, set by external resistor to ground. |
| 16 | SELB | input | Channel select B (LMH6525); channel is selected if pin is high. |
| 17 | EN2B | input | LVDS input channel 2B; channel 2 is active if logical input is low. |
| 18 | EN2 | input | LVDS input channel 2; channel 2 is active if logical input is high. |
| 19 | EN3B | input | LVDS input channel 3B; channel 3 is active if logical input is low. |
| 20 | EN3 | input | LVDS input channel 3; channel 3 is active if logical input is high. |
| 21 | EN4B | input | LVDS input channel 4B; channel 4 is active if logical input is low. |
| 22 | EN4 | input | LVDS input channel 4; channel 4 is active if logical input is high. |
| 23 | NC | unconnected | No connect. |
| 24 | VDD | power_in | Supply voltage (5V single-supply operation). |
| 25 | VDD | power_in | Supply voltage (5V single-supply operation). |
| 26 | VDD | power_in | Supply voltage (5V single-supply operation). |
| 27 | IOUTB | output | Laser driver output channel B, selected by the SEL pin and summing the active channel currents. |
| 28 | GNDB | power_in | Ground connection B. |
| 29 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | UQFN-28(5x5) |
| Category | LED Drivers |
| Pins | 29 |

## CAD (KiCad official)

- Symbol: `LMH6525SP`
- Footprint: `Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm`
- 3D model: UQFN-28(5x5) (KiCad packages3D, STEP)
- 3D model files: `lmh6525sp-etched.step` / `lmh6525sp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6525sp.step` / `lmh6525sp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lmh6525) (24 pp, sha256 `dbcf16bbe08e0a13`, retrieved 2026-10-08, 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/lmh6525sp-datasheet.pdf)