LT3461A Ver la hoja de datos (PDF) - Linear Technology

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componentes Descripción

Fabricante

LT3461A

1.3MHz/3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT

Linear Technology 

LT3461/LT3461A

ABSOLUTE AXI U RATI GS

(Note 1)

Input Voltage (VIN) .................................................. 16V

VOUT, SW Voltage .................................................... 40V

FB Voltage ................................................................. 5V

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

Operating Ambient

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

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

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

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

UW U

PACKAGE/ORDER I FOR ATIO

SW 1

GND 2

FB 3

TOP VIEW

6 VIN

5 VOUT

4 SHDN

S6 PACKAGE

6-LEAD PLASTIC TSOT-23

TJMAX = 125°C,

θJA = 150°C ON BOARD OVER

GROUND PLANE,

θJC = 120°C/W

ORDER PART

NUMBER

LT3461AES6

LT3461ES6

S6 PART MARKING

LTAHG

LTAEB

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

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C, VIN = 3V, VSHDN = 3V, unless otherwise noted.

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Minimum Operating Voltage

2.5

V

Maximum Operating Voltage

Feedback Voltage

Feedback Line Regulation

FB Pin Bias Current

Supply Current

Switching Frequency (LT3461A)

Switching Frequency (LT3461)

Maximum Duty Cycle (LT3461A)

Maximum Duty Cycle (LT3461)

Switch Current Limit

FB = 1.3V, Not Switching

SHDN = 0V

16

V

1.235 1.255 1.275

V

● 1.225

1.280

V

0.005

%/V

●

40

100

nA

2.8

3.6

mA

0.1

0.5

µA

● 2.1

3.0

3.9

MHz

● 1.0

1.3

1.7

MHz

● 82

%

● 92

%

300 420 600

mA

Switch VCESAT

Switch Leakage Current

Schottky Forward Voltage

Schottky Reverse Leakage

SHDN Voltage High

SHDN Voltage Low

SHDN Pin Bias Current

ISW = 250mA

VSW = 5V

ISCHOTTKY = 250mA

VOUT – SW = 40V

260 350

mV

0.01

1

µA

800 1100

mV

0.03

4

µA

1.5

V

0.4

V

35

50

µA

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

of a device may be impaired.

Note 2: The LT3461E/LT3461AE is guaranteed to meet 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.

3461af

2

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