SP34063A datasheet(2/9 Pages) EXAR

2 / 9 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.

Power Supply Voltage VCC ........................................ 40V

Comparator Input Voltage ........................... -0.3V to 40V

Switch Collector Voltage .......................................... 40V

Switch Emitter Voltage (VPIN1=40V)........................... 40V

Switch Collector to Emitter Voltage ........................... 40V

Driver Collector Voltage........................................... 40V

Driver Collector Current (Note 2)..........................100mA

Switch Current ...................................................... 1.5A

Storage Temperature .............................. -65°C to 150°C

ESD Rating (HBM - Human Body Model) .................... 2kV

OPERATING RATINGS

Input Voltage Range VIN................................3.0V to 36V

Power Dissipation (TA=25°C - NSOIC) ..................780mW

Junction Temperature Range ....................-40°C to 150°C

Thermal Resistance θJA .....................................160°C/W

ELECTRICAL SPECIFICATIONS

Specifications with standard type are for an Operating Temperature of TA = 25°C only. 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, VCC = 5.0V, TA= –40°C to 85°C.

Parameter

Min.

Typ.

Max.

Units

Conditions

Oscillator

Frequency FOSC

KHz

VPIN5 = 0V, CT = 1.0nF, TA = 25°C

Charge Current ICHG

µA

VCC = 5.0V to 36V, TA = 25°C

Discharge Current IDISCHG

180

240

290

µA

VCC = 5.0V to 36V, TA = 25°C

Discharge to Charge Current

Ration IDISCHG/ICHG

5.2

6.5

7.5

Pin 7 to VCC, TA = 25°C

Current Limit Sense Voltage

VIPK(sense)

250

300

350

IDISCHG = ICHG, TA = 25°C

Output Switch (Note 1)

Saturation Voltage,

Darlington Connection VCE(sat)

1.0

1.3

ISW=1A, pin1,8 connected

Saturation Voltage (note 2)

0.45

0.7

ISW=1A, R pin8 = 82ohms to VCC,

forced ß=20

DC Current Gain

ISW=1A, VCE = 5V, TA = 25°C

Collector Off-State Current

0.01

100

µA

VCE=36V

Comparator

Threshold Voltage VTH

1.225

1.250

1.275

TA = 25°C

1.210

1.250

1.290

TA = -40°C to 85°C

Threshold Voltage Line

Regulation REGLINE

1.4

VCC = 3.0V to 36V

Input Bias Current IIB

-20

-400

VIN= 0V

Total Device

Supply Current ICC

VCC=5.0V to 36V, CT=1nF, pin 7 = VCC

Vpin5 >VTH

Note 1: Low duty cycle pulse techniques are used during the test program to maintain junction temperature as close to

ambient temperature as possible.

Note 2: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤ 300mA)

and high driver currents (≥ 30mA), it may take up to 2.0μs for it to come out of saturation. This condition will shorten the

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