LTC1265-5 datasheet(2/16 Pages) LINER

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LTC1265/LTC1265-3.3/LTC1265-5

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHDN = 0V, unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IFB

Feedback Current into Pin 9

LTC1265

0.2

µA

VFB

Feedback Voltage

LTC1265C

1.22

1.25

1.28

VIN = 9V, LTC1265I

1.20

1.25

1.30

VOUT

Regulator Output Voltage

LTC1265-3.3: ILOAD = 800mA

3.22

3.3

3.40

LTC1265-5: ILOAD = 800mA

4.9

5.2

∆VOUT

Output Voltage Line Regulation

VIN = 6.5V to 10V, ILOAD = 800mA

–40

Output Voltage Load Regulation

LTC1265-3.3: 10mA < ILOAD < 800mA

LTC1265-5: 10mA < ILOAD < 800mA

100

Burst Mode Operation Output Ripple

ILOAD = 0mA

mVP-P

Input DC Supply Current (Note 3)

Active Mode: 3.5V < VIN < 10V

1.8

2.4

Sleep Mode: 3.5V < VIN < 10V

160

230

µA

Sleep Mode: 5V < VIN < 10V (LTC1265-5)

160

230

µA

Shutdown: VSHDN = VIN, 3.5V < VIN < 10V

µA

VLBTRIP

Low-Battery Trip Point

1.15

1.25

1.35

ILBIN

Current into Pin 4

0.5

µA

ILBOUT

Current Sunk by Pin 3

VLBOUT = 0.4V, VLBIN = 0V

0.5

1.0

1.5

VLBOUT = 5V, VLBIN = 10V

1.0

µA

V8 – V7

Current Sense Threshold Voltage

LTC1265: VSENSE

– = 5V, V9 = VOUT/4 + 25mV (Forced)

VSENSE– = 5V, V9 = VOUT/4 – 25mV (Forced)

130

150

180

LTC1265-3.3: VSENSE– = VOUT + 100mV (Forced)

VSENSE

– = VOUT – 100mV (Forced)

130

150

180

LTC1265-5: VSENSE– = VOUT + 100mV (Forced)

VSENSE– = VOUT – 100mV (Forced)

130

150

180

RON

ON Resistance of Switch

LTC1265C

0.3

0.60

Ω

LTC1265I

0.3

0.70

Ω

CT Pin Discharge Current

VOUT in Regulation, VSENSE– = VOUT

100

µA

VOUT = 0V

µA

tOFF

Switch Off Time (Note 4)

CT = 390pF, ILOAD = 800mA (LTC1265C)

456

µs

CT = 390pF, ILOAD = 800mA (LTC1265I)

3.5

µs

Input Supply Voltage (Pins 1, 2, 13) ..........– 0.3V to 13V

DC Switch Current (Pin 14) .................................... 1.2A

Peak Switch Current (Pin 14) ................................. 1.6A

Switch Voltage (Pin 14) .................................. VIN – 13.0

Operating Temperature Range

LTC1265C ............................................... 0

° to 70°C

LTC1265I ........................................ – 40

°C to 85°C

Junction Temperature (Note 2) ............................. 125

°C

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

° to 150°C

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

°C

(Voltages Refer to GND Pin) (Note 1)

ORDER PART

NUMBER

LTC1265CS

LTC1265CS-5

LTC1265CS-3.3

LTC1265IS

Consult factory for Military grade parts.

TOP VIEW

S PACKAGE

14-LEAD PLASTIC SO

*ADJUSTABLE OUTPUT VERSION

TJMAX = 125°C, θJA = 110°C/W

PWR VIN

VIN

LBOUT

LBIN

ITH

SENSE–

PWR VIN

PGND

SGND

SHDN

N/C (VFB*)

SENSE+

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

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