LTC3522

2

3522f

PACKAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

SW1A, SW1B, SW2 Voltage

DC............................................................ –0.3V to 6V

Pulsed < 100ns........................................... –1V to 7V

Voltage, All Other Pins ................................. –0.3V to 6V

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

Maximum Junction Temperature (Note 5) ............ 125°C

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

(Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage

●

2.4

5.5

V

Quiescent Current—Shutdown

●

0.01

1

μA

Burst Mode Quiescent Current

25

μA

Oscillator Frequency

●

0.8

1.07

1.33

MHz

SHDN1, SHDN2, PWM Input High Voltage

1.4

V

SHDN1, SHDN2, PWM Input Low Voltage

0.4

V

Power Good Outputs Low Voltage

0.02

0.1

V

Power Good Outputs Leakage

0.1

10

μA

Buck Converter

PMOS Switch Resistance

0.41

Ω

NMOS Switch Resistance

0.34

Ω

NMOS Switch Leakage

0.1

5

μA

PMOS Switch Leakage

0.1

10

μA

Feedback Voltage

(Note 4)

●

0.582

0.594

0.606

V

Feedback Input Current

150

nA

Peak Current Limit

(Note 3)

300

400

mA

Maximum Duty Cycle

●

100

%

Minimum Duty Cycle

●

0%

16 15 14 13

5

6

7

8

TOP VIEW

17

UD PACKAGE

16-LEAD (3mm

× 3mm) PLASTIC QFN

9

10

11

12

4

3

2

1

FB2

PWM

GND

PGOOD2

SW1A

SW1B

PGND2

EXPOSED PAD (PIN 17) IS GND AND MUST BE SOLDERED TO PCB GROUND

ORDER PART NUMBER

UD PART MARKING

LTC3522EUD

LCRQ

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/

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

The