1 Features

• AEC-Q100 qualified for automotive applications

• Meets the requirements of ISO 11898-2:2024

for CAN-FD and CAN-FD Signal Improvement

Capability (SIC)

• Integrated 3.3V or 5V Buck regulator (VCC1) with

1 A output capability

– Pin-selectable output (3.3V or 5V) based on

VSEL pin connection

– Switching frequency options from 1.8MHz to

2.4MHz to enable a smaller on-board inductor

– Integrated spread spectrum modulation to

improve EMC performance

• 5V LDO regulator (VCC2) supporting up to

200mA with off-board capability and short-tobattery

protection

• Multiple methods to wake-up from Sleep mode

– CAN bus wake-up pattern (WUP)

– Local wake up (LWU) via four WAKE pins

• Cyclic sensing wake-up using a high-side

switch (HSS4)

– Selective wake/partial networking capability,

TCAN2451-Q1 only

– Digital wake-up using SW pin

• WAKE pins configurable as ID pins to identify ECU

location in the vehicle

• Four high-side switches to support multiple loads

and allow for cyclic sensing wake

• Fail-safe output pin (LIMP) that can also be used

optionally as a low-side switch

• ±58V Bus fault protection

• Advanced CAN bus fault diagnostics

• Timeout, window and Q&A watchdog support

• Access to EEPROM to save device configuration

• Available in 32-pin leadless package with wettable

flank for improved automated optical inspection

(AOI) capability

2 Applications

• Body electronics and lighting

• Car access and security

• Hybrid, electric and powertrain systems

• Industrial transportation

3 Description

The TCAN245x-Q1 is a family of system basis

chips (SBC) that provide a control area network

flexible data rate capable (CAN FD) transceiver

that meets the physical layer requirements of

ISO-11898:2-2024 including the SIC specification.

The CAN FD transceiver supports data rates up

to 8Mbps. The TCAN245x-Q1 integrates a buck

regulator (VCC1) that can output either 3.3V or 5V,

and provide up to 1A output current. The buck

regulator integrates spread spectrum modulation to

improve EMC performance. VCC2 LDO provides

5V output for loads up to 200 mA. TCAN2451-Q1

supports Partial Networking by recognizing a selective

wakeup frame (WUF)

The TCAN245x-Q1 includes features such as LIMP,

four local wake inputs and four high side switches.

The high side switch can be on/off, 10-bit PWM or

timer controlled. Using the GFO pin, it is possible

to control an external CAN FD, LIN transceiver,

CAN SBC or LIN SBC. The WAKE pins can be

configured for static sensing, cyclic sensing (with

HSS4 pin) and pulse based for waking up. These

devices provide EEPROM to store specific device

configuration information thus avoiding extensive

reprogramming after power fluctuations.