NCV8851BDBGEVB データシートの表示（PDF） - ON Semiconductor

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NCV8851BDBGEVB

NCV8851B Automotive Grade Synchronous Buck Controller Evaluation Board User's Manual

ON Semiconductor 

NCV8851BDBGEVB

Table 1. EVALUATION BOARD TERMINAL DESCRIPTIONS

Terminal

Function

VIN

GND

Positive dc input voltage.

Common dc return.

VOUT

SYNC

Regulated dc output voltage.

Input for external clock synchronization.

EN

Enable input. When disabled, the part enters sleep mode.

Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND)

Rating

Value

Unit

Dc Supply Voltage (VIN, EN)

Peak Transient Voltage (Load Dump)

−0.3 to 40

V

45

Dc Supply Voltage (SYNC)

−0.3 to 7

V

Junction Temperature (NCV8851B)

−40 to 150

°C

Ambient Temperature (Demo board)

−40 to 105

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

Table 3. ELECTRICAL CHARACTERISTICS (TA = 25°C, 4.5 V v VIN v 40 V, IOUT v 4 A, unless otherwise specified)

Characteristic

Conditions

Typical Value

Unit

OUTPUT VOLTAGE

Output Voltage

-

5.00

V

Voltage Accuracy

-

4

%

Line Regulation

Load Regulation

SWITCHING REGULATOR

IOUT = 0 A

VIN = 13.2 V

0.02

%

0.04

%

Switching Frequency

Soft-start Time

SYNC Frequency

VIN = 13.2 V, IOUT = 0 A

170

kHz

VIN = 13.2 V, IOUT = 100 mA, 10-90%

14

ms

-

170 to 600

kHz

Duty Cycle Range

-

5 to 95

%

CURRENT LIMIT

Average Current Limit

-

4

A

Cycle-by-cycle Overcurrent Protection

-

6.4

A

GENERAL

Input Undervoltage Lockout (UVLO)

Efficiency

Maximum Shutdown Current

VIN increasing

VIN = 13.2 V, IOUT = 100 mA

VIN = 13.2 V, IOUT = 1 A

VIN = 13.2 V, IOUT = 4 A

-

4.3

V

70.7

%

93.2

90.9

1.0

mA

Thermal Shutdown

-

180

°C

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