LTC3823IGN datasheet(4/26 Pages) LINER

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LTC3823

3823fd

Current Sense Threshold

vs ITH Voltage

On-Time vs ION Current

On-Time vs VON Voltage

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

PGOOD Output

ΔVFBH

PGOOD Upper Threshold

VFB Rising

ΔVFBL

PGOOD Lower Threshold

VFB Falling

–8

–11

–14

ΔVFB(HYS)

PGOOD Hysteresis

VFB Returning

1.5

VPGL

PGOOD Low Voltage

IPGOOD = 5mA

0.15

0.4

Differential Sensing Ampliﬁer

ADA

Gain

0.9965

1.000

1.0035

V/V

RIN

Input Resistance

Measured at VOUTSENSE+ Input

kΩ

VOS

Input Offset Voltage

VOUTSENSE+ = VDIFFOUT = 1.5V,

IDIFFOUT = 1mA

2mV

PSRROA

Power Supply Rejection Ratio

6V < VIN < 30V

ICL

Maximum Output Current

3mA

VOUT(MAX)

Maximum Output Voltage

IDIFFOUT = 300μA

3.775

GBW

Gain Bandwidth Product

IDIFFOUT = 1mA

3.5

MHz

Thermal Shutdown

TSD

Shutdown Temperature

Rising

170

°C

THYST

Thermal Hysteresis

°C

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 15V unless otherwise speciﬁed.

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: TJ is calculated from the ambient temperature TA and power

dissipation PD according to the following formulas:

LTC3823GN: TJ = TA + (PD • 80°C/W)

LTC3823UH: TJ = TA + (PD • 34°C/W)

Note 3: The LTC3823 is tested in a feedback loop that servos VFB to

achieve a speciﬁed error ampliﬁer output voltage (ITH).

Note 4: The LTC3823E is guaranteed to meet performance speciﬁcations

from 0°C to 85°C. Speciﬁcations over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTC3823I is guaranteed over the full

–40°C to 85°C operating temperature range.

ITH VOLTAGE (V)

–150

–100

100

2.5

300

2823 G01

–50

0.5

1.5

150

200

250

VRNG = 2V

1.4V

0.7V

0.5V

ION CURRENT (μA)

100

1000

10000

3823 G02

100

030

VON = 0V

VON VOLTAGE (V)

800

700

600

500

400

300

200

100

3823 G03

123

3.5

0.5

1.5

2.5

4.5

IION = 60μA

TYPICAL PERFORMANCE CHARACTERISTICS

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