SP6652_07 datasheet(2/16 Pages) SIPEX

2 / 16 page

May25-07 RevH

SP6652 1A, High Efficiency, Current Mode PWM Buck Regulator

PVIN,SVIN ...........................................................................-0.3V to 6.0V

PGND to SGND .....................................................................-0.3V to 0.3V

LX to PGND .............................................................. - 0.3V to PVIN+0.3V

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

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

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 sec-

tions of the specifications below is not implied. Exposure to absolute

maximum rating conditions for extended periods of time may affect

reliability.

electrical cHaracteristics

VIN = UVIN = VSDN = 3.6V, IO = 0mA, TAMB = -40°C to +85°C, typical values at 27°C unless otherwise noted.

The ♦ denotes the specifications which apply over the full temperature range, unless otherwise specified.

PARAMETER

MIN typ MAX units

conDitions

Input Operating Voltage

2.85

5.5

♦ Result of IQ measurement at VIN = PVIN

= 5.5V

FB Set Voltage

0.784

0.8 0.816

♦

FB Set Current

0.0

µA

♦ VFB = 0.8V

Overall FB Accuracy

-4

♦ FB = COMP

Switching Frequency

MHz

Mode = SD = VIN

Minimum On-Time-Duration

VFB = 1.0V, VCOMP = 0.2V

SYNC Tracking Frequency

MHz

♦ Mode = SD = VIN, VFB =1.0V

SYNC Input Current

0.0

µA

♦

SYNC Logic Threshold Low

0.3

0.6

♦ High to Low Transition

SYNC Logic Threshold High

♦ Low to High Transition

PMOS Switch Resistance

0.4

0.6

Ω

♦ IPMOS = 200mA

NMOS Switch Resistance

0.4

0.6

Ω

♦ INMOS = 200mA

Inductor Current Limit

1.3

♦ VFB = 0.4V, Mode = SD = VIN

LX Leakage Current

-3

µA

♦ SD = ZeroV

VIN Quiecent Current

VIN = 3.6V, Mode = SD = VIN

VIN = 5.5V, Mode = SD = VIN

UVLO Undervoltage Lockout Threshold,

VIN falling

.55

2.85

♦ SD = VIN

UVLO hysteresis

Soft Start Current

µA

♦ SD = VIN, VCOMP = 1V

MODE Input Current

0.0

µA

♦

MODE Input Threshold Voltage

0.6

0.9

♦ High to Low Transition

1.8

♦ Low to High Transition

Slope Compensation

700

mA/

µS

Rising Over-Temperature Trip Point

°C

Over-Temperature Hysteresis

°C

Error Amplifier Transconductance

mA/V

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