NCP3134

www.onsemi.com

6

range, −40

Parameter

Units

Max

Typ

Min

Test Conditions

Symbol

LOGIC PINS: I/O VOLTAGE AND CURRENT

EN high threshold voltage

1.1

1.18

1.30

V

EN hysteresis

0.18

0.24

V

EN input pull up resistor

1.2

M

W

PS mode threshold voltage

Level 1 to Level 2

2.2

V

PS source

10

mA pull−up current when enabled

8

10

12

mA

INTERNAL BST DIODE

Reverse−bias leakage current

1

mA

SOFT STOP

Output discharge on−resistance

20

W

TIMERS: SOFT START

Soft start ramp−up time

Rising from Vss = 0 V to Vss = 0.6 V

1.0

ms

Delay after EN asserting

EN = ‘HI’

0.2

ms

Switching frequency control

Forced CCM mode

1.98

2.2

2.42

MHz

PWM

Minimum ON time

FCCM mode or Automatic CCM/DCM mode

60

ns

Minimum OFF time

FCCM mode or Automatic CCM/DCM mode

70

ns

PWM ramp amplitude (Note1)

VIN/4

V

Maximum duty cycle, FCCM mode

or Automatic CCM/DCM mode

80

%

THERMAL SHUTDOWN

Thermal shutdown threshold (Note 1)

160

°C

Thermal shutdown hysteresis (Note 1)

10

°C

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

1. Guaranteed by design, no production test.

2. Guaranteed by characterization.