DIU6921

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DIU6921 • Rev. 1.1

Electrical Characteristics

VIN = 12 V, VOUT = 1.2 V, L = 2.2 μH, COUT = 22 μF, TA = 25°C, IOUT = 1 A, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

VIN

Input voltage range

4.5

30

V

IQ

Quiescent current

IOUT = 0, VFB = VREF × 105%

140

µA

ISHDN

Shutdown current

EN = 0

5

10

µA

VREF

Feedback reference voltage

0.588

0.6

0.612

V

IFB(1)

FB input current

VFB = VIN

-50

50

nA

RDS(ON)(1)

Top FET RON

120

mΩ

RDS(ON)(1)

Bottom FET RON

75

mΩ

ILIM

Bottom FET valley current limit

2

A

VENH

EN rising threshold

TA = 25°C

0.75

0.8

0.85

V

TA = -40 ~ 125°C

0.69

0.8

0.91

V

VENL_HYS

Hysteresis

60

80

100

mV

VUVLO

Input UVLO threshold

4.5

V

VUVLO_HYS

UVLO hysteresis

500

mV

fSW

Switching frequency

700

kHz

tON

ON time

VIN = 12 V, VOUT = 1.2 V, IOUT = 1 A

145

ns

Min ON time(1)

50

ns

Min OFF time(1)

100

ns

tSS(1)

Soft -start time

2

ms

TSD(1)

Thermal shutdown temperature

150

°C

THYS(1)

Thermal shutdown hysteresis

15

°C

Note:

(1) Guaranteed by design.

(2) Specifications subject to change without notice.