StarTech TBT3TBTADAP teardown

Product page: https://www.startech.com/en-us/usb-hubs/tbt3tbtadap

Full teardown photo set available on Google Photos.

Markings¶

Front¶

TBT3_LEGACY_ADAPTER_MB_V1R1
LEGACY THUNDERBOLT
ADAPTER REV 3:2
Lintes technology.

OEM: Lintes Technology Co., Ltd.

The LEGACY THUNDERBOLT / TBT3_LEGACY_ADAPTER silkscreen confirms Thunderbolt 1 support alongside Thunderbolt 2.

Logos¶

• Intel — top right corner

• Thunderbolt — bottom right corner

Denotes an officially licensed Thunderbolt product.

Back¶

00007 94V-0
E157836
.1650 RU

• 94V-0: PCB flammability category

• E157836: UL iQ Database entry → ZPMV2 / E157836, manufacturer Mutual-Tek Industries Co., Ltd

• .1650: UL date code, 50th week of 2016

BOM¶

Front¶

• CON1: TB3 embedded host cable (male USB-C to custom connector)

  • Lintes 1635: Slimluster?

• D1, D2, D3: MCU activity LEDs?

  • D2: power good

  • D1: USB-C? (blinks when connected to a USB3 port through an adapter, but stays lit on a mobile USB-C without Thunderbolt support)

  • D3: MCU boot?

• J1: MCU test pads?

  • VCC3V3, RST#, SWCLK, SWDIO, GND, 5 unmarked

• J2: Lotes 1719 — mDP connector for TB2

• Q1, Q2: TI CSD16323 — N-Channel NexFET Power MOSFET

• Q3: Fairchild/onsemi FDMC7678 — N-Channel PowerTrench MOSFET, 30 V, 19.5 A, 5.3 mΩ

• U1: NVM for U2 (Intel firmware?)

  • Winbond 25Q80DVNIG (W25Q80DV): 3 V, 8 M-bit serial flash with dual and quad SPI

• U2: USB-C controller

  • TI TPS65982 — USB Type-C™ and USB PD controller, power switch and high-speed multiplexer

• U3: MCU

  • NXP LPC1114F — 32-bit ARM Cortex-M0. Package (LQFP48) and /301 suffix identify the LPC1114FBD48/301 variant: 32 kB flash, 8 kB SRAM. Silkscreen:

    LPC1114F
    Q /301
    Z 330.122
    ZSD163110

• U4, U5, U7: misc transistors?

  • Marking H17K???

• U6: LDO? — VSON-10?

  • Marking: 7UGH / 397 (pin 1 dot, horizontal bar)

• U8: LDO? — WQFN-20

  • Marking: MPGK / 9184 / 798 (pin 1 dot, horizontal bar)

• U9: TB3 eFuse

  • TI TPS25942A — 2.7 V–18 V, 5 A eFuse power MUX with multiple protection modes

Back¶

• UB1: TB2 eFuse

  • TI TPS25942A — 2.7 V–18 V, 5 A eFuse power MUX with multiple protection modes (near the TB2 port)

• QB1, QB2, QB3, QB4, QB7: misc transistors

• QB5, QB6: unpopulated

• QB8, QB9: 2× 7157 P-Channel MOSFET (SI7157DP, TrenchFET Gen III?)

Going further (Upcoming articles)¶

• Thunderbolt 3 ↔ Thunderbolt 2 adapters

• Daisy-chaining multiple Thunderbolt devices through mixed adapters and protocol versions

• Thunderbolt device authorization (and my Cosmic desktop applet)

• Wordclock synchronization across chained interfaces

• Helping write the missing Linux driver for the PreSonus Quantum Thunderbolt Interfaces