LM5085 datasheet(4/33 Pages) TI

No. de pieza	LM5085

Descripción Electrónicos	75V Constant On-Time PFET Buck Switching Controller

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Fabricante Electrónico	TI [Texas Instruments]

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LM5085, LM5085-Q1

SNVS565I – NOVEMBER 2008 – REVISED AUGUST 2015

www.ti.com

6.2 ESD Ratings: LM5085

VALUE

UNIT

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1)

±2000

V(ESD)

Electrostatic discharge

V

Charged device model (CDM), per JEDEC specification JESD22-C101,

±750

all pins(2)

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2)

JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 ESD Ratings: LM5085-Q1

MIN

VALUE

UNIT

Human body model (HBM), per AEC Q100-002(1)

±2000

Corner pins (1, 4, 5,

±750

V(ESD)

Electrostatic discharge

V

Charged device model (CDM), per

and 8)

AEC Q100-011

Other pins

±750

(1)

AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.4 Recommended Operating Conditions

MIN

MAX

UNIT

VIN Voltage

4.5

75

V

Junction Temperature

–40

125

°C

6.5 Thermal Information

LM5085

LM5085,

LM5085-Q1

THERMAL METRIC(1)

UNIT

DGK

NGQ

DGN

8 PINS

θJA

Junction-to-ambient thermal resistance

153

44.8

54.1

θJC(top)

Junction-to-case (top) thermal resistance

52.5

39.4

49.1

θJB

Junction-to-board thermal resistance

71.9

11.6

26.7

°C/W

ψJT

Junction-to-top characterization parameter

4.6

0.3

1.3

ψJB

Junction-to-board characterization parameter

70.8

11.6

26.5

θJC(bot)

Junction-to-case (bottom) thermal resistance

29

5.0

3.6

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.6 Electrical Characteristics

Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over –40°C to 125°C junction temperature range

unless otherwise stated. Unless otherwise stated the following conditions apply: VIN = 48 V, RT = 100kΩ.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN PIN

IIN

Operating Current

Non-Switching, FB = 1.4 V (1)

1.3

1.8

mA

IQ

Shutdown Current

RT = 0 V (1)

200

345

µA

VCC REGULATOR(2)

VCC(reg)

VIN - VCC

Vin = 9 V, FB = 1.4 V, ICC = 0 mA

6.9

7.7

8.5

V

Vin = 9 V, FB = 1.4 V, ICC = 20 mA

7.7

V

Vin = 75 V, FB = 1.4 V, ICC = 0 mA

7.7

V

UVLOVcc

VCC Under-Voltage Lock-out

VCC Increasing

3.8

V

Threshold

UVLOVcc Hysteresis

VCC Decreasing

260

mV

VCC(CL)

VCC Current Limit

FB = 1.4 V

20

40

mA

(1)

Operating current and shutdown current do not include the current in the RT resistor.

(2)

VCC provides self bias for the internal gate drive.

4

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Product Folder Links: LM5085 LM5085-Q1

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