LTC3265 datasheet(4/20 Pages) LINER

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LTC3265

3265fa

For more information www.linear.com/LTC3265

The l denotes the specifications which apply over the specified operating

junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN_P = VIN_N = EN+ = EN– = 10V, MODE = 0V, RT = 200kΩ

ELECTRICAL CHARACTERISTICS

TYPICAL PERFORMANCE CHARACTERISTICS

Oscillator Frequency

vs Supply Voltage

Oscillator Frequency vs RT

Shutdown Current vs Temperature

TA = 25°C, CBST = CINV = 1µF, CIN_P = CIN_N =

COUT+ = COUT– = CLDO+ = CLDO– = 10µF, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Line Regulation

0.002

mV/V

Load Regulation

0.02

mV/mA

VDROPOUT– LDO– Dropout Voltage

ILDO– = –50mA

200

500

Output Voltage Noise

CBYP– = 100nF

100

µVRMS

VEN–(H)

EN– Threshold Rising

1.1

VEN–(L)

EN– Threshold Falling

0.4

1.0

IEN–

EN– Pin Internal Pull-Down Current

VIN_P = VIN_N = EN– = 16V

0.7

µA

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 LTC3265 is tested under pulsed load conditions such that

TJ ≈ TA. The LTC3265E is guaranteed to meet specifications from

0°C to 85°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

LTC3265I is guaranteed over the –40°C to 125°C operating junction

temperature range, the LTC3265H is guaranteed over the –40°C to 150°C

operating junction temperature range and the LTC3265MP is guaranteed

over the –55°C to 150°C operating junction temperature range. High

junction temperatures degrade operating lifetimes; operating lifetime

is derated for junction temperatures greater than 125°C. Note that the

maximum ambient temperature consistent with these specifications is

determined by specific operating conditions in conjunction with board

layout, the rated package thermal impedance and other environmental

factors.

The junction temperature (TJ, in °C) is calculated from the ambient

temperature (TA, in °C) and power dissipation (PD, in Watts) according to

the formula:

TJ = TA + (PD • θJA),

where

θJA is the package thermal impedance.

Note 3: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperatures will exceed 150°C when overtemperature protection is

active. Continuous operation above the specified maximum operating

junction temperature may result in device degradation or failure.

INPUT VOLTAGE (V)

100

200

300

400

500

600

3265 G01

RT = GND

RT = 200kΩ

RT (kΩ)

100

10k

100

200

300

400

500

600

3265 G02

TEMPERATURE (°C)

–50

100

150

3265 G03

VIN_P = VIN_N

16V

4.5V

10V

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