component
l6902d013tr
Public Unreviewedby Ray
STMicroelectronics DC-DC Converters, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownL6902D013TR
STMicroelectronics · DC-DC Converters · SOIC-8
L6902D013TR from STMicroelectronics, in a SOIC-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 | OUT | output | Regulator switching output. Drain of the internal P-channel DMOS power switch (typ. 250 mΩ) that drives the external inductor / catch diode of the step-down converter. Delivers up to 1 A continuous output current, internally limited (typ. 2.5 A latched short-circuit limit). Absolute maximum DC rating -1 V to 40 V (-5 V to 40 V peak, t ≤ 0.1 µs). |
| 2 | CS+ | input | Positive (higher-voltage) input of the on-chip current error amplifier. Connect to the high side of the external current-sense resistor Rsense. Together with CS- programs the output current limit / constant-current setpoint via a ~100 mV internal offset (Voffs typ. 100 mV, ±5%). Absolute maximum -0.3 V to VCC. |
| 3 | CS- | input | Negative (lower-voltage) input of the on-chip current error amplifier. Connect to the low side of the external current-sense resistor Rsense. Compatible with both VCC-referenced and GND-referenced sensing schemes, enabling accurate (±5%) programmable current limiting. Absolute maximum -0.3 V to VCC. |
| 4 | COMP | output | Output of the internal voltage / current error amplifier, used for external loop frequency compensation. Connect an R-C compensation network from this pin to GND to set the control-loop bandwidth and phase margin. VOH ≈ 3.6 V (VFB = 1 V), VOL ≈ 0.4 V (VFB = 1.5 V); source ≈ 200 µA, sink ≈ 1 mA. Absolute maximum 4 V. |
| 5 | FB | input | Step-down voltage-feedback input to the internal voltage error amplifier. Tie directly to VOUT for a 1.235 V (±2%) regulated output, or drive from an external R1/R2 divider to program higher outputs up to 34 V: VOUT = 1.235 V × (1 + R1/R2). Absolute maximum 4 V. |
| 6 | VREF | power_out | Buffered 3.3 V (±2%) reference output. Can source up to ~5 mA of external load current (short-circuit current typ. 10 mA); line regulation 5 mV typ. over VCC = 8 V to 36 V, load regulation 8 mV typ. No output capacitor is required for stability. |
| 7 | GND | power_in | Device ground / signal and power return. Ground reference for the reference, error amplifiers, oscillator, and control logic. |
| 8 | VCC | power_in | Unregulated DC supply input. Operating range 8 V to 36 V (absolute maximum 40 V). Powers the internal control circuitry and the source of the integrated P-channel DMOS power switch. Bypass with a low-ESR capacitor close to the pin. Typical total operating quiescent current ~3 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
L6902D013TR
CAD (KiCad official)
- Symbol:
L6902D013TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (None pp, sha256
3803ca31a2db142e, retrieved 2026-08-17, tier: manufacturer) - 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).