SP6652 Datasheet, PDF (2/16 Pages) Sipex Corporation – 1A, High Efficiency, High Frequency 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
V_IN = UV_IN = V_SDN = 3.6V, I_O = 0mA, T_AMB = -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
Input Operating Voltage
FB Set Voltage
FB Set Current
Overall FB Accuracy
Switching Frequency
Minimum On-Time-Duration
SYNC Tracking Frequency
SYNC Input Current
SYNC Logic Threshold Low
SYNC Logic Threshold High
PMOS Switch Resistance
NMOS Switch Resistance
Inductor Current Limit
LX Leakage Current
VIN Quiecent Current
UVLO Undervoltage Lockout Threshold,
VIN falling
UVLO hysteresis
Soft Start Current
MIN TYP MAX UNITS
CONDITIONS
2.85
5.5 V
0.784 0.8 0.816 V
-1 0.01 1 µA
-4
4
%
1.2 1.4 1.6 MHz
180 230 ns
1.0
2.0 MHz
-1 0.01 1 µA
0.3 0.6 V
1.7
V
0.4 0.6 Ω
0.4 0.6 Ω
♦
Result of IQ measurement at VIN = PVIN
= 5.5V
♦
♦ VFB = 0.8V
♦ FB = COMP
Mode = SD = VIN
VFB = 1.0V, VCOMP = 0.2V
♦ Mode = SD = VIN, VFB =1.0V
♦
♦ High to Low Transition
♦ Low to High Transition
♦ IPMOS = 200mA
♦ INMOS = 200mA
1.3 1.5 1.7
A
♦ VFB = 0.4V, Mode = SD = VIN
-3 0.1 3 µA ♦ SD = ZeroV
1 5 mA
3 10 mA
VIN = 3.6V, Mode = SD = VIN
VIN = 5.5V, Mode = SD = VIN
2.55 2.7 2.85 V
♦ SD = VIN
6
%
1
2
4
µA ♦ SD = VIN, VCOMP = 1V
SD MODE Input Current
SD MODE Input Threshold Voltage
Slope Compensation
-1 0.01 1 µA ♦
0.9
V ♦ High to Low Transition
0.6
1.25 1.8 V ♦ Low to High Transition
700
mA/µS
Rising Over-Temperature Trip Point
140
°C
Over-Temperature Hysteresis
14
°C
Error Amplifier Transconductance
1
mA/V
Oct10-07 RevJ
SP6652 1A, High Efficiency, Current Mode PWM Buck Regulator

© 2007 Sipex Corporation