LTC3108IGN datasheet(3/20 Pages) LINER

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LTC3108

3108p

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 LTC3108E 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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Start-Up Voltage

Using 1:100 Transformer Turns Ratio

No-Load Input Current

Using 1:100 Transformer Turns Ratio; VIN = 20mV,

VOUT2_EN = 0V; All Outputs Charged and in Regulation

3mA

Input Voltage Range

Using 1:100 Transformer Turns Ratio

VSTARTUP

500

Output Voltage

VS1 = VS2 = GND

VS1 = VAUX, VS2 = GND

VS1 = GND, VS2 = VAUX

VS1 = VS2 = VAUX

2.30

3.234

4.018

4.90

2.350

3.300

4.100

5.000

2.40

3.366

4.182

5.10

VOUT Quiescent Current

VOUT = 3.3V, VOUT2_EN = 0V

0.4

μA

VAUX Quiescent Current

No Load, All Outputs Charged

μA

LDO Output Voltage

0.5mA Load

2.156

2.2

2.244

LDO Load Regulation

For 0mA to 2mA Load

0.5

LDO Line Regulation

For VAUX from 2.5V to 5V

0.01

0.02

LDO Dropout Voltage

ILDO = 2mA

100

200

LDO Current Limit

VOUT Current Limit

4.5

VSTORE Current Limit

4.5

VAUX Clamp Voltage

Current into VAUX = 5mA

5.25

5.5

VSTORE Leakage Current

VSTORE = 5V

0.1

μA

VOUT2 Leakage Current

VOUT2 = 0V, VOUT2_EN = 0V

μA

VS1, VS2 Threshold Voltage

0.4

0.85

1.2

VS1, VS2 Input Current

VS1 = VS2 = 5V

0.01

0.1

μA

PGOOD Threshold (Rising)

Measured Relative to the VOUT Voltage

–7

PGOOD Threshold (Falling)

Measured Relative to the VOUT Voltage

–9

PGOOD VOL

Sink Current = 100μA

0.3

0.5

PGOOD VOH

Source Current = 0

2.1

2.2

2.3

PGOOD Pull-Up Resistance

1MΩ

VOUT2_EN Threshold Voltage

VOUT2_EN Rising

0.4

1.3

VOUT2_EN Pull-Down Resistance

5MΩ

VOUT2 Turn-On Time

5μs

VOUT2 Turn-Off Time

(Note 3)

0.15

μs

VOUT2 Current Limit

0.2

0.3

0.5

VOUT2 Current Limit Response Time

(Note 3)

350

VOUT2 P-Channel MOSFET On-Resistance

VOUT = 3.3V (Note 3)

1.3

N-Channel MOSFET On-Resistance

C2 = 5V (Note 3)

0.5

The l denotes the speciﬁcations which apply over the speciﬁed operating

junction temperature range of –40°C to 85°C, otherwise speciﬁcations are at TA = 25°C. VAUX = 5V, unless otherwise noted.

with statistical process controls. The LTC3108I is guaranteed to meet

speciﬁcations over the full –40°C to 85°C operating temperature range.

Note 3: Speciﬁcation is guaranteed by design and not 100% tested in

production.

Note 4: Failure to solder the exposed backside of the package to the PC

board ground plane will result in a thermal resistance much higher than

43°C/W.

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