LT1310_15 datasheet(2/12 Pages) LINER

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LT1310

sn1310 1310fs

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Undervoltage Lockout

2.8

Maximum Input Voltage

Feedback Voltage

1.242

1.255

1.268

1.236

1.268

FB Pin Bias Current

150

Reference Line Regulation

VIN = 2.9V to 18V

0.01

0.05

%/V

Error Amplifier Transconductance

∆I = 5µA

350

µA/V

Error Amplifier Voltage Gain

200

V/V

SW Current Limit

1.5

2.1

2.8

SW Saturation Voltage

ISW = 1A

0.240

0.320

SW Maximum Duty Cycle

CT = 220pF

CT = 47pF

SW Minimum On Time

ISW = 150mA, VC = 0.25V

VCO Frequency

CT = 220pF, PLL-LPF = High

0.950

1.10

1.25

MHz

CT = 220pF, PLL-LPF = High

0.800

1.30

MHz

CT = 220pF, PLL-LPF = Low

500

630

kHz

CT = 47pF, PLL-LPF = High

3.3

MHz

Frequency Foldback

CT = 220pF, PLL-LPF = High, FB = 0V

200

kHz

PLL Lock Range

CT = 220pF, Maximum

0.950

1.10

1.25

MHz

CT = 220pF, Minimum (Percent Change from Max)

–40

–50

Supply Current

SHDN = High

11.5

SHDN = Low

µA

SW Leakage Current

Switch Off, SW = 3.3V

0.1

µA

SHDN Pin Bias Current

VSHDN = 2.4V

µA

SHDN Pin High

Active Mode

2.4

SHDN Pin Low

Shutdown Mode

0.4

(Note 1)

SW Voltage .............................................................. 36V

VIN Voltage ............................................................. 18V

SHDN Voltage ......................................................... 18V

SYNC Voltage ........................................................... 5V

FB Voltage ................................................................. 5V

CT Voltage ................................................................. 5V

VC Voltage ................................................................. 2V

PLL-LPF Pin Current ............................................... 1mA

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

ORDER PART

NUMBER

LT1310EMSE

TJMAX = 125°C, θJA = 40°C/W

EXPOSED PAD IS GROUND

(MUST BE SOLDERED TO PCB)

The q denotes specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V, VSHDN = 3.3V, unless otherwise noted. (Note 2)

SHDN

PLL-LPF

SYNC

GND

VIN

TOP VIEW

MSE EXPOSED PAD PACKAGE

10-LEAD PLASTIC MSOP

MSE PART MARKING

LTRZ

Consult LTC Marketing for parts specified with wider operating temperature ranges.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT1310E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, chacterization and correlation

with statistical process controls.

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

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