ON Semiconductor NCV7451 User Manual

System Basis Chip with CAN FD, LDO Regulator and Wake-up Comparator

NCV7451

The system basis chip (SBC) NCV7451 integrates +5 V / 250 mA LDO regulator with a high−speed CAN FD transceiver and local wake−up comparator, directly controlled by dedicated pins.

Features

• 5 V ±2% / 250 mA LDO

♦ Current Limitation with Fold−back ♦ Output Voltage Monitoring

• One High−Speed CAN FD Transceiver

♦ Compliant to ISO11898−2:2016 ♦ CAN FD Timing Specified up to 5 Mbps ♦ Current Limitation, Reverse Current Protected ♦ TxDC Timeout

• Local Wake−up Comparator

♦ Integrated Pull−up / Pull−down Current Source

• Very Low Current Quiescent Consumption

• Window Watchdog

• Direct Control

• Thermal Shutdown Protection

• AEC−Q100 Qualified and PPAP Capable

• Wettable Flank Package for Enhanced Optical Inspection

• This is a Pb−Free Device

www.onsemi.com

DFNW14 4.5x3, 0.65P

CASE 507AC

MARKING DIAGRAM

NCV 7451

ALYW

NCV7451 = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package

Typical Applications

• Automotive

• Industrial Networks

PIN CONNECTIONS

TxDC

GND

VR1

RxDC

RSTN

WD_EN

WDI

NCV7451

CAN_EN

CANH

CANL

GND

WAKE

WAKE_OUT

ORDERING INFORMATION

Device Package Shipping

NCV7451MW0R2G DFNW14

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.

5000 / Tape &

Reel

†

February, 2021 − Rev. 0

1 Publication Order Number:

NCV7451/D

NCV7451

Battery

connection

VDD

RESET

MCU

CAN

Cbuf

4u7

100n

References,

oscillator

VR1

RSTN

WD_EN

WDI

WAKE_OUT

CAN_EN

TxDC

RxDC

VR1

5 V / 250 mA

Watchdog

Local

wakeup

VR1

CAN

NCV7451

WAKE

CANH

CANL

3k3

10n

Termination,

Protection

CAN bus

GND

GNDGND

Figure 1. Simplified Application Diagram

www.onsemi.com

VR1

RSTN

NCV7451

VS1

VR1

ref

LDO

Regulator

Internal

supply

References

Thermal

Monitoring

WD_EN

WDI

WAKE_OUT

CAN_EN

TxDC

RxDC

VR1

Watchdog

Timeout

GND

Oscillator

Filt.

Local

Wakeup

VR1

CAN

GND

WAKE

CANH

CANL

ref

Figure 2. Block Diagram

PIN FUNCTION DESCRIPTION

Pin No.

Pin Name

(LV = Low Voltage; HV = High Voltage)

1 TxDC LV digital input; internal pull−up CAN transmitter data input

2 GND Ground connection Ground supply (all GND pins have to be connected externally)

3 VR1 LV supply output Output of the 5 V / 250 mA low−drop regulator

4 RxDC LV digital output; push−pull CAN receiver data output

5 RSTN LV digital output; open drain; internal pull−up Reset signal to the MCU

6 WD_EN LV digital input; internal pull−up current Watchdog enable input

7 WDI LV digital input; internal pull−down Watchdog trigger input

8 WAKE_OUT LV digital output WAKE pin output (inverted WAKE level)

9 WAKE HV input; pull−up/−down current WAKE pin

10 VS HV supply input Main supply input

11 GND Ground connection Ground supply (all GND pins have to be connected externally)

12 CANL CAN bus interface CANL line of the CAN bus

13 CANH CAN bus interface CANH line of the CAN bus

14 CAN_EN LV digital input; internal pull−down CAN transceiver enable input

EP Exposed pad Substrate (has to be connected to all GND pins externally)

Pin Type

Description

www.onsemi.com

NCV7451

MAXIMUM RATINGS

Symbol Rating Min Max Unit

VS DC Power Supply Voltage (Note 1) *0.3 +40 V

VR1 LDO Supply pin output voltage *0.3 6 or VS+0.3

(whichever

is lower)

VdigIO DC voltage on digital pins (CAN_EN, WD_EN, WDI, RSTN, RxDC, TxDC,

*0.3 VR1+0.3 V

WAKE_OUT)

WAKE DC WAKE pin Input Voltage *40 +40 V

CANH, CANL DC voltage on pin CANH and CANL *40 +40 V

Vdiff Differential DC voltage between any two pins (incl. CANH and CANL) *40 +40 V

V_ESD

HBM

ESD capability, Device HBM, according to AEC−Q100−002 (EIA/JESD22−A114); (Note 2)

Pins VS, CANH, CANL, WAKE

*8 +8

Other pins *4 +4

V_ESD

CDM

V_ESD

IEC

V_SCHAF Voltage transients, Test pulses According to

ESD capability; MM, according to AEC−Q100−003 (EIA/JESD22−A115); all pins

ESD capability; CDM, according to AEC−Q100−011 (EIA/JESD22−C101); all pins

ESD capability; System HBM, according to IEC61000−4−2; pins VS, CANH, CANL, WAKE; (Note 3)

Test pulse 1 *100 − V ISO7637*2, Class D; pins VS, CANH, CANL, WAKE

Test pulse 2a − +75 V

−200 +200 V

*750 +750 V

−6 +6 kV

Test pulse 3a *150 − V

Test pulse 3b − +100 V

Tj Junction Temperature Range *40 +150 °C

Tstg Storage Temperature Range *55 +150 °C

Tsld Peak Soldering Temperature (Note 4) − 260 °C

MSL Moisture Sensitivity Level 1 −

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

1. Refer to ELECTRICAL CHARACTERISTICS, RECOMMENDED OPERATING RANGES and/or APPLICATION INFORMATION for Safe Operating parameters.

2. Equivalent to discharging a 100 pF capacitor through a 1.5 kW resistor

3. Equivalent to discharging a 150 pF capacitor through a 330 W resistor; WAKE pin stressed through an external series resistor of 3.3 kW and with 10 nF capacitor on the module input, VS pin decoupled with 100 nF.

4. For information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D

THERMAL CHARACTERISTICS

Symbol Rating Value Unit

θJA

ψJC

Thermal Characteristics,

Thermal Resistance, Junction−to−Air (Note 5) Thermal Reference, Junction−to−Air (Note 6)

Thermal Characteristics,

Thermal Resistance, Junction−to−Case

77 52

°C/W

5. Value based on test board according to JESD51−3 standard, signal layer with 10% trace coverage.

6. Value based on test board according to JESD51−7 standard, signal layers with 20% trace coverage, inner planes with 90% coverage.

www.onsemi.com

NCV7451

RECOMMENDED OPERATING RANGES

Symbol Rating Min Max Unit

VR1 VR1 regulator output voltage 4.9 5.1 V

I(VR1) VR1 regulator output current (including CAN transceiver consumption) 0 250 mA

VdigIO Digital inputs/outputs voltage 0 VR1 V

WAKE WAKE input voltage 0 VS V

CANH, CANL CAN bus pins voltage −40 40 V

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability.

ELECTRICAL CHARACTERISTICS

6 V v VS v 18 V; −40°C v Tj v 150°C; 4.75 V v VR1 v 5.25 V; R

Symbol Parameter Conditions Min Typ Max Unit

VS SUPPLY

VS_PORH

VS_PORL VS POR threshold VS falling 2.0 − 3.5 V

Is_off VS consumption, low−power VS = 14 V, VR1 on (not loaded), WAKE float-

Is_act VS consumption, active VS = 14 V, VR1 on (loaded by 100 mA, not

VR1 VOLTAGE REGULATOR

V_VR1

Ilim_VR1 Regulator current limitation Maximum VR1 overload current,

Ishort_VR1 Regulator short current Maximum VR1 short current, VR1 < RES_VR1 125

Vdrop_VR1 Dropout Voltage

Loadreg_VR1 Load Regulation 1 mA v I(VR1) v 100 mA −50 − 50 mV

Linereg_VR1 Line Regulation I(VR1) v 100 mA −40 − 40 mV

Cload_VR1 VR1 load capacity

RES_VR1 VR1 Reset threshold VR1 voltage decreasing 4.3 4.5 4.7 V

RES_hyst_VR1 VR1 Reset threshold hysteresis 0.05 0.1 0.2 V

tfilt_RES_VR1 VR1 undervoltage filter time − 15 −

OV_VR1 VR1 overvoltage threshold VR1 voltage increasing / decreasing 5.5 − 6.0 V

OV_hyst_VR1 VR1 overvoltage threshold

tfilt_OV_VR1 VR1 overvoltage filter time − 15 −

toff_VR1 VR1 off time after TSD − 1.0 − s

Functional supply voltage 5.0 28 V

Supply voltage for valid parameter specification 6.0 18 V

Junction Temperature −40 150 °C

Ambient Temperature −40 125 °C

= 60 W, CLT = 100 pF, CST not used, unless otherwise specified.

VS POR threshold VS rising 3.4 − 4.1 V

ing, CAN bus recessive, CAN_EN = Low, WD_EN = Low, Tj v 85°C

included in Is_act), WAKE floating, CAN bus recessive, CAN_EN = High, WD_EN = High, TxDC = High

Regulator output voltage 0 mA v I(VR1) v 250 mA (including internal

CAN consumption), 6 V v VS v 28 V

VR1 > RES_VR1

I(VR1) = 100 mA, VS = 5 V − 0.2 0.4

I(VR1) = 100 mA, VS = 4.5 V − 0.2 0.5

I(VR1) = 50 mA, VS = 4.5 V − 0.1 0.4

ESR < 200 mW, ceramic capacitor recommended

hysteresis

− 28 35

− 3.7 5.0 mA

4.9 5.0 5.1 V

250 − 650 mA

1/2 x

Ilim_VR1

1.0 4.7 −

− 0.06 − V

325 mA

www.onsemi.com

NCV7451

ELECTRICAL CHARACTERISTICS (continued)

6 V v VS v 18 V; −40°C v Tj v 150°C; 4.75 V v VR1 v 5.25 V; R

Symbol UnitMaxTypMinConditionsParameter

VR1 VOLTAGE REGULATOR

Is_add_VR1

CAN BUS LINES (Pins CANH and CANL)

o(rec)

o(rec)(CANH)

o(rec)(CANL)

o(off)(CANH)

o(off)(CANL)

o(off)(diff)

o(dom)(CANH)

o(dom)(CANL)

o(sym)

o(dom)(diff)

o(dom)(diff)_arb

o(rec)(diff)

o(sc)(CANH)

o(sc)(CANL)

i(rec)(diff)_NM

i(rec)(diff)_LP

i(dom)(diff)_NM

i(dom)(diff)_ LP

i(diff)(th)_NM

i(diff)(th)_LP

VS consumption adder of VR1 (Note 7) − 0.01 x

Recessive output current at pins CANH and CANL

Input leakage current

Recessive output voltage at

CAN enabled;

−27 V < V

CANH

0 W v R(VR1 to GND) < 1 MW; V

= V

CANH

CAN enabled; TxDC = High; no load 2.0 2.5 3.0 V

pin CANH

Recessive output voltage at

CAN enabled; TxDC = High; no load 2.0 2.5 3.0 V

pin CANL

Recessive output voltage at

CAN disabled; no load −0.1 0 0.1 V

pin CANH

Recessive output voltage at

CAN disabled; no load −0.1 0 0.1 V

pin CANL

Differential bus output volt-

CAN disabled; no load −0.2 0 0.2 V age in off mode (V

− V

CANH

Dominant output voltage at pin CANH

Dominant output voltage at pin CANL

Driver output voltage symmetry (V

Differential bus output voltage (V

Differential bus output voltage during arbitration (V

− V

CANH

Differential bus output voltage (V

Short circuit output current at pin CANH

Short circuit output current at pin CANL

Differential input voltage range recessive state

CANL

CANH

CANL

CANH

)

− V

)

− V

+ V

CANL

CAN enabled; 50 Ω v RLT v 65 Ω;

TxDC = Low; t < t

CAN enabled; 50 Ω v RLT v 65 Ω;

TxDC = Low; t < t

CAN enabled; CST = 4.7 nF; TxDC driven by

)

square wave up to 1 MHz

CAN enabled; 45 Ω v RLT v 65 Ω;

)

TxDC = Low; dominant

CAN enabled; RLT = 2240 Ω;

TxDC = Low; dominant; (Note 7)

CAN enabled; no load;

)

= High; recessive

TxDC

CAN enabled; TxDC = Low;

= −3 V

CANH

−3 V v V

CANH

CAN enabled; TxDC = Low;

= 36 V

CANL

−3 V v V

CANL

CAN enabled; no load;

−12 V v V

CAN disabled; no load;

−12 V v V

Differential input voltage range

dominant state

CAN enabled; no load;

−12 V v V

CAN disabled; no load;

−12 V v V

Differential receiver threshold voltage in normal mode

Differential receiver threshold voltage in wake−up−detection mode

CAN enabled;

−12 V v V

CAN disabled;

−12 V v V

= 60 W, CLT = 100 pF, CST not used, unless otherwise specified.

I(VR1)

−5.0 − 5.0 mA

, V

< 32 V

CANL

−5.0 0 5.0

= 5 V

2.75 3.5 4.5 V

dom(TxDC)

0.5 1.5 2.25 V

dom(TxDC)

0.9 − 1.1 VR1

1.5 2.25 3.0 V

1.5 − 5.0 V

−50 0 50 mV

v 18 V

−100

−1.5

−70 −40

2.0

70 100

100

3.0 − 0.5 V

, V

CANL

v 12 V

CANH

−3.0 − 0.4 V

, V

CANL

v 12 V

CANH

0.9 − 8.0 V

, V

CANL

v 12 V

CANH

1.05 − 8.0 V

, V

CANL

v 12 V

CANH

0.5 − 0.9 V

, V

CANL

v 12 V

CANH

0.4 − 1.05 V

, V

CANL

v 12 V

CANH

− A

www.onsemi.com

+ 12 hidden pages