2

LT1930/LT1930A

(Note 1)

SW Voltage ................................................– 0.4V to 36V

FB Voltage .............................................................. 2.5V

Current Into FB Pin ..............................................

±1mA

SHDN Voltage ......................................................... 10V

Maximum Junction Temperature ......................... 125

°C

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

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

°C to 150°C

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

°C

ORDER PART

NUMBER

LT1930ES5

LT1930AES5

S5 PART MARKING

LTKS

LTSQ

ELECTRICAL CHARACTERISTICS

PACKAGE/ORDER I FOR ATIO

ABSOLUTE

AXI U

RATI GS

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

of a device may be impaired.

Note 2: The LT1930E/LT1930AE are guaranteed to meet performance

specifications from 0

°C to 70°C. Specifications over the –40°C to 85°C

operating temperature range are assured by design, characterization and

correlation with statistical process controls.

Note 3: Current limit guaranteed by design and/or correlation to static test.

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

SW 1

GND 2

TOP VIEW

S5 PACKAGE

5-LEAD PLASTIC SOT-23

FB 3

4 SHDN

LT1930

LT1930A

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Minimum Operating Voltage

2.45

2.6

2.45

2.6

V

Maximum Operating Voltage

16

16

V

Feedback Voltage

1.240

1.255

1.270

1.240

1.255

1.270

V

q

1.230

1.280

1.230

1.280

V

FB Pin Bias Current

q

120

360

240

720

nA

Quiescent Current

4.2

6

5.5

8

mA

Quiescent Current in Shutdown

0.01

1

0.01

1

µA

Reference Line Regulation

2.6V

0.01

0.05

0.01

0.05

%/V

Switching Frequency

1

1.2

1.4

1.8

2.2

2.6

MHz

q

0.85

1.6

1.6

2.9

MHz

Maximum Duty Cycle

q

84

90

75

90

%

Switch Current Limit

(Note 3)

1

1.2

2

1

1.2

2.5

A

400

600

400

600

mV

Switch Leakage Current

0.01

1

0.01

1

µA

SHDN Input Voltage High

2.4

2.4

V

SHDN Input Voltage Low

0.5

0.5

V

SHDN Pin Bias Current

16

32

35

70

µA

0

0.1

0

0.1

µA