SP6699 datasheet(2/12 Pages) EXAR

2 / 12 page

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Rev. 2.1.0

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of

the device at these ratings or any other above those

indicated in the operation sections of the specifications

below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may affect

reliability.

Input Voltage VIN .................................................... 20V

SW Voltage............................................................ 27V

FB Voltage............................................................. 20V

CTRL Voltage ......................................................... 20V

Operating Junction Temperature ........................... 150ºC

Storage Temp. Range TSTG ....................... -65ºC to 150ºC

Lead Temperature (sold. 10s) TLEAD ..................... 260ºC

ESD Ratings – Human Body Model.........................2000V

ESD Ratings – Machine Model .................................250V

Moisture Sensitivity Level (MSL)................................... 3

OPERATING RATINGS

Input Voltage Range VIN................................2.7V to 16V

Operating Temperature Range................... -40°C to 85°C

CTRL Voltage VCTRL ..................................................16V

Thermal Resistance (junction to Atm.) RθJA ..........265°C/W

ELECTRICAL SPECIFICATIONS

Specifications with standard type are for an Operating Junction Temperature of TA = 25°C only; limits applying over the full

Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,

design, or statistical correlation. Typical values represent the most likely parametric norm at TA = 25°C, and are provided

for reference purposes only. Unless otherwise indicated, VIN = 3V, VCTRL = 3V, TA= 25°C.

Parameter

Min.

Typ.

Max.

Units

Conditions

Operating Voltage

2.5

Feedback Voltage VFB

188

200

212

•

IOUT=20mA, 4 LEDs

FB Pin Bias Current IFB

100

Supply Current ICC

1.3

2.0

2.7

VFB = VIN, not switching

Supply Current IQ

2.0

3.2

5.0

µA

VCTRL = 0V

Switching Frequency f

0.7

1.0

1.3

MHz

Maximum Duty Cycle DMAX

Switch Current Limit (Note 1)

ILIMIT

500

TA=25°C, D=40%

250

TA=25°C, D=80%

Switch VCE Saturation Voltage

VCESAT

360

ISW=250mA

Switch Leakage Current

0.01

µA

VSW=5V

CTRL Pin Voltage VCTRL - High

1.8

CTRL Pin Voltage VCTRL – Low

0.05

CTRL Bias Current ICTRL

µA

TA=85°C

µA

TA=-40°C

Schottky Forward Drop VDROP

0.7

ID=150mA

Schottky Leakage Current

0.1

µA

VR=23V

150

µA

VR=27V

Soft Start Time t

300

µs

Note 1: The switch current limit is related to the duty cycle. Refer to figure 16 for details.

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