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LT1935

1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch

Linear Integrated System 

LT1935

ABSOLUTE AXI U RATI GS

(Note 1)

VIN Voltage .............................................................. 16V

SW Voltage ................................................– 0.4V to 40V

FB Voltage ................................................................. 6V

Current Into FB Pin .............................................. ±1mA

SHDN Voltage ......................................................... 16V

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

Operating Ambient Temperature Range

(Note 2) .............................................. – 40°C to 85°C

Storage Temperature Range ................. – 65°C to 150°C

Strict adherence to JDEC 020B solder attach and rework

for assemblies containing lead is recommended.

UW U

PACKAGE/ORDER I FOR ATIO

TOP VIEW

SW 1

GND 2

FB 3

5 VIN

4 SHDN

S5 PACKAGE

5-LEAD PLASTIC TSOT-23

TJMAX = 125°C, θJA = 113°C/ W,

ORDER PART

NUMBER

LT1935ES5

S5 PART MARKING

LTRX

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

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

VIN = 3V, VSHDN = VIN unless otherwise noted. (Note 2)

PARAMETER

CONDITIONS

MIN TYP MAX

Feedback Voltage

Measured at the FB Pin

● 1.240 1.265 1.280

Feedback Voltage Line Regulation

FB Pin Bias Current

Undervoltage Lockout Threshold

2.5V ≤ VIN ≤ 16V

VFB = VREF

0.01

●

12

60

2.1

2.3

Maximum Input Voltage

16

Switching Frequency

1

1.2

1.4

Maximum Duty Cycle

● 85

93

Switch Current Limit

(Note 3)

2

3.2

Switch Saturating Voltage

Switch Leakage Current

SHDN Pin Input Current

Operating Supply Current

SHDN Supply Current

SHDN Input High Voltage

ISW = 2A

VSW = 5V

VSHDN = 1.8V

VSHDN = 0V

VFB = 1.5V

VSHDN = 0V

180 280

●

0.01

1

14

40

0.1

3

0.1

1

1.8

SHDN Input Low Voltage

0.5

UNITS

V

%/V

nA

V

V

MHz

%

A

mV

µA

µA

µA

mA

µA

V

V

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

of a device may be impaired.

Note 2: The LT1935ES5 is 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.

1935f

2

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