SP6137 datasheet(2/15 Pages) EXAR

2 / 15 page

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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.

Vcc .......................................................................... 7V

BST ...................................................................... 27V

BST-SWN ......................................................-0.3 to 7V

SWN ............................................................-1V to 20V

GH................................................... -0.3V to BST+0.3V

GH-SWN.................................................................. 7V

All other pins ..................................... -0.3V to VCC+0.3V

GH, GL peak output current <10us..............................2A

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

Power Dissipation.................................Internally Limited

ESD Rating BST Pin (HBM - Human Body Model)...... 1.5kV

ESD Rating All Other Pins (HBM) ............................... 2kV

Thermal Resistance θJA ....................................41.9°C/W

Operating Voltage Range ..............................2.5V to 20V

ELECTRICAL SPECIFICATIONS

Specifications with standard type are for an Operating Junction Temperature of TJ = 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 TJ = 25°C, and are provided for

reference purposes only. Unless otherwise indicated, Vcc = 4.5V to 5.5V, BST= Vcc, SWN=GND=0V, UVIN=3V, CVcc = 10µF,

CCOMP=0.1uF, CGH=CGL=3.3nF, CSS=50nF, TA= –40°C to 85°C (SP6137EU) or TA= –0°C to 70°C (SP6137CU)..

Parameter

Min.

Typ.

Max.

Units

Conditions

VCC Supply Current

1.5

VFB =0.9V (No switching)

BST Supply Current

0.2

0.4

•

VFB =0.9V (No switching)

VCC UVLO Start Threshold

4.00

4.25

4.50

•

VCC UVLO Hysteresis

100

200

300

UVIN Start Threshold

2.30

2.50

2.65

•

UVIN Hysteresis

260

300

390

UVIN Input Current

UVIN=3.0V

Error Amplifier Reference

0.792

0.800

0.808

2X Gain Config., Measure VFB, VCC=5V,

T=25°C

Error Amplifier Reference

Over Line and Temperature

0.788

0.800

0.812

•

Error Amplifier

Transconductance

Error Amplifier Gain

No Load

COMP Sink Current

150

VFB=0.9V, COMP=0.9V

COMP Source Current

150

VFB=0.7V, COMP=2.2V

VFB Input Bias Current

200

•

VFB=0.8V

Internal Pole

MHz

COMP Clamp

2.5

VFB=0.7V, TA = 25°C

COMP Clamp Temp. Coefficient

-2

mV/°C

Ramp Amplitude

0.92

1.10

1.28

•

RAMP Offset

1.1

TA = 25°C, RAMP COMP until GH starts

switching

RAMP Offset Temp. Coefficient

-2

mV/°C

GH Minimum Pulse Width

180

•

Maximum Controllable Duty

Ratio

•

Maximum Duty Ratio Measured just

before pulse skipping begins

Maximum Duty Ratio

100

Valid for 20 Cycles

Internal Oscillator Frequency

760

900

1040

kHz

•

SS Charge Current:

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