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jw1571sopb-tr
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JoulWatt Tech JW1571SOPB TR AC-DC Controllers and Regulators, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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JoulWatt Tech JW1571SOPB TR · AC-DC Controllers and Regulators · SOP-8
JW1571SOPB#TR from JoulWatt Tech JW1571SOPB TR, in a SOP-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 | GATE | output | Gate driver output for the external PFC boost MOSFET. Delivers +0.6A source / -1.4A sink peak current with a gate-high voltage of ~11V and an absolute maximum rating of -0.3 to 13V. |
| 2 | GND | power_in | Chip ground reference for all internal circuitry and the gate driver return. |
| 3 | CS | input | Current sensing input from the MOSFET source resistor (RCS). Cycle-by-cycle limit VCS_MAX = 0.4V (400ns LEB); short-circuit protection threshold VCS_SCP = 1.5V (250ns LEB). Absolute max -0.3 to 5V (5 to 5.5V for <10us). |
| 4 | VCC | power_in | Controller power supply input. Start-up threshold VCC_ST = 13V, UVLO = 8.2V, recommended operating range 12 to 40V, absolute maximum 45V. Typical operating current 300uA (fsw=25kHz, GATE floating). |
| 5 | FB | input | Output voltage feedback pin. Regulates against internal reference VFB_REF = 2.5V; FB OVP threshold 2.7V with 0.2V hysteresis. Pulling FB below VFB_ST = 0.4V disables switching and enters green mode. Absolute max -0.3 to 5V. |
| 6 | OTP | input | External over-temperature protection input. Sources IOTP = 100uA into an external NTC divider; when the pin voltage falls below VOTP = 2V (0.2V hysteresis) the controller stops switching. Absolute max -0.3 to 5V. |
| 7 | NC | unconnected | No connect. Left unconnected in the pin functions table with no described internal function. |
| 8 | ZCD | input | Zero-current-detection input from the boost inductor auxiliary winding for demagnetization timing and valley switching. Also used for 2nd OVP output-voltage sensing via ZCD source/sink current (IOVP2 = 1.3mA). Absolute max -0.6 to 45V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JoulWatt Tech JW1571SOPB TR |
| Package | SOP-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
JW1571SOPB#TRSOPB#TR
CAD (KiCad official)
- Symbol:
JW1571SOPB#TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JoulWatt Tech JW1571SOPB TR datasheet (None pp, sha256
a80ed567a05e0ab1, retrieved 2026-08-17, tier: lcsc) - 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).