NCP3420 データシートの表示（PDF） - ON Semiconductor

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NCP3420

MOSFET Driver with Dual Outputs for Synchronous Buck Converters

ON Semiconductor 

NCP3420

ELECTRICAL CHARACTERISTICS (Note 4) (VCC = 12 V, TA = 0°C to +85°C, TJ = 0°C to +125°C unless otherwise noted.)

Characteristic

Symbol

Condition

Min

Typ

Max Unit

Supply

Supply Voltage Range

Supply Current

OD Input

VCC

−

4.6

−

13.2

V

ISYS

BST = 12 V, IN = 0 V

−

0.7

6.0

mA

Input Voltage High

VOD_HI

−

2.0

−

−

V

Input Voltage Low

VOD_LO

−

−

−

0.8

V

Hysteresis

−

−

−

400

−

mV

Input Current

−

No internal pull−up or pull−down resistors −1.0

−

+1.0

mA

Propagation Delay Time

PWM Input

tpdlOD

tpdhOD

−

1.0

25

45

ns

1.0

25

45

ns

Input Voltage High

VPWM_HI

−

Input Voltage Low

VPWM_LO

−

Hysteresis

−

−

2.0

−

−

V

−

−

0.8

V

−

500

−

mV

Input Current

−

No internal pull−up or pull−down resistors −1.0

−

+1.0

mA

High−Side Driver

Output Resistance, Sourcing Current

−

Output Resistance, Sinking Current

−

SW Pulldown Resitance

−

VBST − VSW = 12 V (Note 6)

VBST − VSW = 12 V (Note 6)

SW to PGND

−

1.8

3.0

W

−

1.0

2.5

W

10

−

55

kW

Output Resistance, Unbiased

−

BST−SW = 0 V

10

−

55

kW

Transition Times

trDRVH

VBST − VSW = 12 V, CLOAD = 3.0 nF

−

16

30

ns

tfDRVH

(See Figure 3)

−

11

25

ns

Propagation Delay (Note 5)

Low−Side Driver

tpdhDRVH

VBST − VSW = 12 V, CLOAD = 3.0 nF

20

30

45

ns

tpdlDRVH

(See Figure 3)

10

30

45

ns

Output Resistance, Sourcing Current

−

Output Resistance, Sinking Current

−

Output Resistance, Unbiased

−

Timeout Delay

−

VCC = 12 V (Note 6)

VCC − PGND = 12 V (Note 6)

VCC = PGND

DRVH−SW = 0

−

1.8

3.0

W

−

1.0

2.5

W

10

−

55

kW

−

85

−

ns

Transition Times

trDRVL

VBST − VSW = 12 V, CLOAD = 3.0 nF

−

16

30

ns

tfDRVL

(See Figure 3)

−

11

25

ns

Propagation Delay (Note 5)

Undervoltage Lockout

tpdhDRVL

VBST − VSW = 12 V, CLOAD = 3.0 nF

15

30

45

ns

tpdlDRVL

(Note 6, tpdhDRVL Only) (See Figure 3)

10

30

45

ns

UVLO Startup

−

−

3.9

4.3

4.5

V

UVLO Shutdown

−

−

3.7

4.1

4.3

V

Hysteresis

−

−

0.1

0.2

0.4

V

Thermal Shutdown

Over Temperature Protection

−

(Note 6)

150

170

−

°C

Hysteresis

(Note 6)

−

20

−

°C

4. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).

5. For propagation delays, “tpdh’’ refers to the specified signal going high; “tpdl’’ refers to it going low.

6. GBD: Guaranteed by design; not tested in production.

Specifications subject to change without notice.

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