LTC3240 datasheet(2/12 Pages) LINER

2 / 12 page

LTC3240-3.3/LTC3240-2.5

3240fb

VIN to GND ...................................................–0.3V to 6V

VOUT to GND .............................................–0.3V to 5.5V

⎯S⎯H⎯D⎯N to GND................................ –0.3V to (V

IN + 0.3V)

VOUT Short-Circuit Duration ............................. Indeﬁnite

Operating Temperature Range (Note 2) ...– 40°C to 85°C

Storage Temperature Range...................– 65°C to 125°C

Maximum Junction Temperature .......................... 125°C

ORDER PART NUMBER

TJMAX = 125°C, θJA = 80°C/W (NOTE 4)

EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB

LTC3240EDC-3.3

LTC3240EDC-2.5

(Note 1)

The

● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C, ⎯S⎯H⎯D⎯N = VIN, CFLY = 1µF, CIN = 1µF, COUT = 4.7µF unless otherwise noted.

ELECTRICAL CHARACTERISTICS

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

TOP VIEW

DC PACKAGE

6-LEAD (2mm

× 2mm) PLASTIC DFN

GND

VIN

VOUT

SHDN

C –

C +

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input Voltage Range

●

1.8

5.5

VOUT

Output Voltage Range

1.8V ≤ VIN ≤ 2.5V, IOUT < 40mA

●

3.168

3.3

3.432

LTC3240-3.3

2.5V ≤ VIN ≤ 5.5V, IOUT < 150mA

●

3.168

3.3

3.432

LTC3240-2.5

1.8V ≤ VIN ≤ 5.5V, IOUT < 60mA

●

2.4

2.5

2.6

IIN

No Load Input Current

IOUT = 0, 1.8V ≤ VIN ≤ 5.5V

100

µA

I⎯S⎯H⎯D⎯N

Shutdown Current

⎯S⎯H⎯D⎯N = 0V, V

OUT = 0V

0.1

µA

Efﬁciency

VIN = 2.5V, IOUT = 100mA

LTC3240-3.3

VIN = 3.7V, IOUT = 100mA

LTC3240-2.5

VIN = 2V, IOUT = 50mA

VIN = 3V, IOUT = 50mA

VIH

⎯S⎯H⎯D⎯N Input High Voltage

1.8V ≤ VIN ≤ 5.5V

●

1.2

VIL

⎯S⎯H⎯D⎯N Input Low Voltage

1.8V ≤ VIN ≤ 5.5V

●

0.4

IIH

⎯S⎯H⎯D⎯N Input Current

V⎯S⎯H⎯D⎯N = VIN = 5.5V

●

– 1

µA

IIL

⎯S⎯H⎯D⎯N Input Current

V⎯S⎯H⎯D⎯N = 0V

●

– 1

µA

ILIM

Output Current Limit

VIN = 3.7V, VOUT = 0V Step-Down Mode

450

VIN = 2.4V, VOUT = 0V Step-Up Mode

270

tON

VOUT Turn-On Time

From the Rising Edge of

⎯S⎯H⎯D⎯N to 90% of V

OUT

VIN = 2.5V, RLOAD = 66Ω

0.5

VIN = 3.7V, RLOAD = 66Ω

0.4

Step-Up Mode

IBURST

Burst Mode Threshold

VIN = 2.4V

VRIPPLE

Output Ripple

IOUT = 100mA, VOUT = 2.5V or 3.3V

mVP-P

fOSC

Switching Frequency

VIN = 2.4V

●

0.6

1.2

1.8

MHz

VRIPPLE(BURST)

Burst Mode

® Output Ripple

VIN = 2.4V

mVP-P

Burst Mode is a registered trademark of Linear Technology Corporation.

DC PART MARKING

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

LBXJ

LCBP

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

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