V2/Vext Connection - NXP Semiconductors UJA1169A User Manual

NXP Semiconductors

2.2.3 V2/VEXT connection

UM11758
User manual
UJA1169A devices contain a second on-chip 5 V regulator. On the UJA1169ATK,
UJA1169ATK/F, UJA1169ATK/3 and UJA1169ATK/F/3 variants, this regulator (V2)
supplies the internal CAN transceiver and/or additional onboard hardware. On the
UJA1169ATK/X and UJA1169ATK/X/F variants, the second regulator (VEXT) is intended
to supply off-board components such as sensors.
Both V2 and VEXT can deliver up to 100 mA. A decoupling capacitor (C10) is connected
between the pin and ground on the board. LED D6 lights up when the V2/VEXT output is
active.
The V2 (UJA1169AF-EVB and UJA1169AF3-EVB) or VEXT (UJA1169AXF-EVB) output
voltage is accessible on connector J3 (pin 10).
Table 5. VEXT connection
UJA1169A
V2/VEXT (pin 13)
UJA1169A
Figure 9. V2/VEXT supply connections
All information provided in this document is subject to legal disclaimers.
UJA1169Ax-EVB
J3-10: provides 5 V supply for internal ECU/external loads
V2/VEXT(p13)
GND(p1,4,16,19)
Rev. 1 — 19 April 2022
UJA1169A evaluation boards
V2/VEXT
R8
1 kΩ
C10
6.8 µF
D6
LED
GND
aaa-045535
UM11758
J3
© NXP B.V. 2022. All rights reserved.
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