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DS20005693G-page 4

MIC28514

Shutdown Supply Current

IQSHDN

—0.15

2

µA

Power from VIN, VEN =0V

—35

60

µA

VIN =VDD =5.5V, VEN =0V

Reference

Feedback Reference Voltage

VFB

0.597

0.6

0.603

V

TJ =+25°C

0.594

0.6

0.606

-40°C ≤ TJ ≤ +125°C

Load Regulation

—

—

0.04

—

%

IOUT = 0A to 5A (Note 4)

Line Regulation

—

—

0.1

—

%

PVIN = 7V to 75V (Note 4)

FB Bias Current

IFB_BIAS

—

0.05

0.5

µA

VFB =0.6V

Enable Control

EN Logic Level High

ENHIGH

1.6

——

V

EN Logic Level Low

ENLOW

——

0.6

V

EN Bias Current

IENBIAS

—6

30

µA

VEN =0V

On Timer

Maximum Switching Frequency

FREQ

720

800

880

kHz

FREQ = PVIN, IOUT =5A

Minimum Switching Frequency

FREQ

230

270

300

kHz

FREQ = 33% PVIN

Maximum Duty Cycle

DMAX

—85

—

%

VFB =0V, FREQ = PVIN

(Note 1)

Minimum Duty Cycle

DMIN

—0

—

%

VFB > 0.6V

Minimum Off-Time

tOFF(MIN)

100

200

300

ns

Minimum On-Time

tON(MIN)

—60

—

ns

(Note 4)

Soft Start

Soft Start Current Source

ISS

0.8

1.4

3

µA

Soft Start Period Range

—

2.5

—

40

ms

Current Limit

Current Limit

ICLIM

5.5

6.25

7

A

RCL =1.42kΩ (Note 2,

Note 4)

ILIM Source Current

ICL

—135

—

µA

ILIM Source Current Tempco

—

—

0.3

—

µA/°C

(Note 4)

Internal FETs

Top MOSFET RDS(ON)

RDS(ON)

—25

—

mΩ

Bottom MOSFET RDS(ON)

RDS(ON)

—25

—

mΩ

SW Leakage Current

ISWLEAK

——

5

µA

PVIN =48V, VEN =0V

PVIN Leakage Current

IVINLEAK

——

10

µA

PVIN =48V, VEN =0V

BST Leakage Current

IBSTLEAK

—

—

10

µA

PVIN = 48V, VEN =0V

Power Good (PG)

PG Threshold

VPG_TH

85

90

95

%VFB rising

PG Threshold Hysteresis

VPG_HYS

—6

—

%

VFB falling

PG Delay Time

tPG_DLY

—150

—

µs

VFB rising

ELECTRICAL CHARACTERISTICS(1) (CONTINUED)

Electrical Characteristics: PVIN =12V, VOUT =5V, VDD =5V, VBST – VSW =5V; fSW = 300 kHz, RCL = 1.42 k,

L= 8.2 µH; TA = +25°C, unless noted. Boldface values indicate -40°C ≤ TJ ≤ +125°C.

(Note 3)

Parameters

Symbol

Min.

Typ.

Max.

Units

Conditions

Note 1: Specification for packaged product only.

2: The ICL is trimmed to get the current in the limits at room temperature.

3: Temperature limits apply for automotive AEC-Q104 qualified part.

4: Not production tested. Specification obtained by characterization.