4

LTC1266

LTC1266-3.3/LTC1266-5

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Normal Mode

2.1

3.3

mA

Sleep Mode

170

260

µA

Shutdown

25

60

µA

Normal Mode

20

50

µA

Sleep Mode

1

7

µA

Shutdown

1

7

µA

Current Sense Threshold

(Burst Mode Operation Enabled)

LTC1266CS, LTC1266IS

25

mV

LTC1266CS

135

155

180

mV

LTC1266IS

135

155

190

mV

LTC1266-3.3, LTC1266-5 (I and C)

25

mV

LTC1266CS-3.3, LTC1266CS-5

135

155

180

mV

LTC1266IS-3.3, LTC1266IS-5

135

155

190

mV

Current Sense Threshold

(Burst Mode Operation Disabled)

LTC1266CS, LTC1266IS

–20

mV

LTC1266CS

130

155

185

mV

LTC1266IS

130

155

195

mV

LTC1266-3.3, LTC1266-5 (I and C)

–20

mV

LTC1266CS-3.3, LTC1266CS-5

130

155

185

mV

LTC1266IS-3.3, LTC1266IS-5

130

155

195

mV

Shutdown Pin Threshold

C Grade

0.55

0.8

2

V

I Grade

0.50

0.8

2

V

Off-Time (Note 4)

3.8

5

6.5

µs

3.8

5

7.0

µs

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

of a device may be impaired.

Note 3: Dynamic supply current is higher due to the gate charge being

delivered at the switching frequency. See Applications Information.

time increases approximately 40%.

Note 5: The LTC1266CS, LTC1266CS-3.3, LTC1266-5 and LTC1266ACS

are not tested and not quality assurance sampled at – 40

°C and 85°C.

These specifications are guaranteed by design and/or correlation. The

LTC1266IS, LTC1266IS-3.3, LTC1266IS-5 and LTC1266AIS are

guaranteed and tested over the – 40

°C to 85°C operating temperature

range.

Note 6: Unless otherwise noted the specifications for the LTC1266A are

the same as those for the LTC1266.

–40

ELECTRICAL CHARACTERISTICS