LTM8031EVPBF datasheet(3/20 Pages) LINER

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LTM8031

8031fa

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTM8031E is guaranteed to meet performance speciﬁcations

from 0°C to 125°C internal. Speciﬁcations over the –40°C to 125°C

internal temperature range are assured by design, characterization and

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBIAS = 3V, unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input DC Voltage

3.6

VOUT

Output DC Voltage

0.2A < IOUT ≤ 1A, RADJ Open

0.2A < IOUT ≤ 1A, RADJ = 21.6k

0.8

IOUT

Continuous Output DC Current

VIN = 24V

IQ(VIN)

VIN Quiescent Current

VRUN/SS = 0.2V

VBIAS = 3V, Not Switching

VBIAS = 0V, Not Switching

0.6

120

μA

IQ(BIAS)

BIAS Quiescent Current

VRUN/SS = 0.2V

VBIAS = 3V, Not Switching

VBIAS = 0V, Not Switching

0.03

120

μA

ΔVOUT

VOUT

Line Regulation

10V ≤ VIN ≤ 36V, IOUT = 1A, VOUT = 3.3V

0.1

Load Regulation

VIN = 24V, 0.2A ≤ IOUT ≤ 1A, VOUT = 3.3V

0.3

VOUT(AC_RMS) Output Ripple (RMS)

VIN = 24V, IOUT = 1A, VOUT = 3.3V

fSW

Switching Frequency

RT = 113k

325

kHz

VADJ

Voltage at ADJ Pin

765

790

815

VBIAS(MIN)

Minimum BIAS Voltage for Proper Operation

1.9

2.8

IADJ

Current Out of ADJ Pin

VRUN/SS = 0V, VADJ = 0V, VOUT = 1V

μA

IRUN/SS

RUN/SS Pin Current

VRUN/SS = 2.5V

μA

VIH(RUN/SS)

RUN/SS Input High Voltage

2.5

VIL(RUN/SS)

RUN/SS Input Low Voltage

0.2

VPG(TH)

ADJ Voltage Threshold for PGOOD to Switch

730

IPGO

PGOOD Leakage

VPG = 30V

0.1

μA

IPGSINK

PGOOD Sink Current

VPG = 0.4V

200

800

μA

VSYNCIL

SYNC Input Low Threshold

fSYNC = 550kHz

0.5

VSYNCIH

SYNC Input High Threshold

fSYNC = 550kHz

0.7

ISYNC(BIAS)

SYNC Pin Bias Current

VSYNC = 0V, VBIAS = 0V

0.1

μA

VIN(RIPPLE)

550kHz Narrowband Conducted Emission

1MHz Narrowband Conducted Emission

3MHz Narrowband Conducted Emission

VIN = 24V, VOUT = 3.3V, IOUT = 1A, fSW = 550kHz,

5μH LISN

dBμV

correlation with statistical process controls. The LTM8031I is guaranteed

to meet speciﬁcations over the full –40°C to 125°C internal operating

temperature range. Note that the maximum internal temperature is

determined by speciﬁc operating conditions in conjunction with board

layout, the rated package thermal resistance and other environmental

factors.

Note 3: See Linear Technology Application Note 100.

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