LT3095 datasheet(3/22 Pages) LINER

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LT3095

3095fa

For more information www.linear.com/LT3095

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. Absolute Maximum Ratings are those values

beyond which the life of a device may be impaired.

Note 2: The LT3095E is guaranteed to meet performance specifications

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

to 125°C operating junction temperature range are assured by design,

characterization, and correlation with statistical process controls. The

LT3095I is guaranteed over the full –40°C to 125°C operating junction

temperature range. The LT3095MP is 100% tested over the –55°C to

125°C operating junction temperature range.

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

INTVCC INTVCC Voltage

VEN1 = VEN2 = 5V

2.7

INTVCC Under Voltage Lockout

VEN1 = VEN2 = 5V, INTVCC Rising

2.25

2.4

2.55

INTVCC Under Voltage Lockout

Hysteresis

VEN1 = VEN2 = 5V

300

Boost Regulator

BOOST

(VLDOIN – VOUT) Differential Regulation

Voltage

VEN1 = VEN2 = 5V, VOUT = 10V, ILOAD = 0mA

1.85

2.15

Boost Maximum Duty Cycle

fOSC = 1MHz

Switch Pin Leakage Current

Switch OFF, VSW = 12V

0.01

µA

Boost Switch Peak Current Limit

(Note 3)

0.8

0.95

1.1

Switch VCESAT

ISW = 400mA

250

OSC

Oscillator Frequency

RT = 210k, VIN = 5V

RT = 100k, VIN = 5V

RT = 44.5k, VIN = 5V

0.47

0.95

1.85

0.5

0.53

1.05

2.15

MHz

SYNC Duty Cycle Range

VSYNC = 0V to 1.5V pulse

SYNC Pin Input Current

VSYNC = 5V

µA

SYNC Threshold

fOSC = 1MHz, 50% duty cycle

0.8

1.1

1.3

LDO Linear Regulator

LDO

SET Pin Current

VOUT = 10V, ILOAD = 0mA

49.5

50.5

µA

VOUT = 1V to 20V, ILOAD = 0mA to 50mA

µA

Offset Voltage (VOUT – VSET)

VOUT = 10V, ILOAD = 0mA

–1

0.15

LDO Voltage Regulation: ΔISET

LDO Voltage Regulation: ΔVOS (Note 5)

VOUT = 3V to 20V, ILOAD = 0mA

VOUT = 1V to 20V, ILOAD = 0mA

–60

–50

–100

µV

LDO Load Regulation: ΔISET

LDO Load Regulation: ΔVOS (Note 4)

VOUT = 10V, ILOAD = 0mA to 50mA

100

–6

150

LDOIN Supply Current

ILOAD = 0mA

450

µA

Ripple Rejection

3V < VOUT < 20V, ILOAD = 50mA

fRIPPLE = 450kHz, CSET = 0.1µF, COUT = 2.2µF, ILOAD = 50mA

fRIPPLE = 1MHz, CSET = 0.1µF, COUT = 2.2µF, ILOAD = 50mA

fRIPPLE = 2MHz, CSET = 0.1µF, COUT = 2.2µF, ILOAD = 50mA

LDO Output Noise Voltage

VOUT = 5V, ILOAD = 50mA, CSET = 0.47µF, COUT = 2.2µF,

BW = 10Hz to 100KHz.

µVRMS

LDO Output Current Limit

VOUT = 1V to 20V

Note 3: The boost peak current limit is measured in a low frequency test

mode. In operation at high frequencies, the inductor current may exceed

this value due to delays in the control circuitry.

Note 4: Linear Technology® is unable to guarantee maximum load

regulation due to production test limitations with Kelvin-sensing the

package pins. Please consult the Typical Performance Characteristics for

curves of output regulation as a function of load current.

Note 5: For VOUT < 1.25V, the LT3095 is tested with a 30µA external

load. This load substitutes for an internal 30µA load which exists for

VOUT > 1.25V.

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C, VIN = 5V, SYNC = 0V unless otherwise noted.

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