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.
All other pins............................................................-0.3V to VCC+0.3V
VCC .................................................................................................. 7V
VIN.................................................................................................. 22V
ILX .................................................................................................... 5A
BST................................................................................................ 35V
LX-BST...............................................................................-0.3V to 7V
LX........................................................................................-ꢀV to 20V
Storage Temperature................................................... -65°C to 150°C
Power Dissipation..................................................... Internally Limited
ESD Rating........................................................................... 2kV HBM
Thermal Resistance ΟJC........................................................... 5°C/W
ELECTRICAL CHARACTERISTICS
Unless otherwise specified: -40°C < TAMB < 85°C, -40°C< Tj <125°C, 4.5V < VCC < 5.5V, 3V< Vin < 20V, BST=LX + 5V,
LX = GND = 0.0V, UVIN = 3.0V, CVCC = ꢀµF, CCOMP = 0.ꢀµF, CSS = 50nF, Typical measured at VCC = 5V.
The • denotes the specifications which apply over the full temperature range, unless otherwise specified.
PARAMETER
MIN.
TYP.
MAX.
UNITS
CONDITIONS
QUIESCENT CURRENT
Vcc Supply Current (No switching)
Vcc Supply Current (switching)
BST Supply Current (No switching)
BST Supply Current (switching)
PROTECTION: UVLO
ꢀ.5
8
3
ꢀ2
0.4
6
mA
mA
mA
mA
Vfb =0.9V
•
•
0.2
4
Vfb =0.9V
Vcc UVLO Start Threshold
Vcc UVLO Hysteresis
4.00
ꢀ00
2.3
4.25
200
2.5
4.5
300
2.65
400
ꢀ
V
mV
V
•
UVIN Start Threshold
UVIN Hysteresis
200
300
mV
µA
UVIN Input Current
UVIN= 3.0V
ERROR AMPLIFIER REFERENCE
2X Gain Config., Measure
Vfb; Vcc =5 V, T=25°C
Error Amplifier Reference
0.792
0.788
0.800
0.808
0.8ꢀ2
V
Error Amplifier Reference
Over Line and Temperature
Error Amplifier Transconductance
Error Amplifier Gain
•
0.800
6
V
mA/V
dB
60
No Load
COMP Sink Current
ꢀ50
ꢀ50
50
µA
Vfb =0.9V, COMP= 0.9V
Vfb =0.7V, COMP= 2.2V
Vfb = 0.8V
COMP Source Current
Vfb Input Bias Current
Internal Pole
µA
200
nA
4
MHz
V
COMP Clamp
2.5
-2
Vfb =0.7V, TA=25¼C
COMP Clamp Temp. Coefficient
mV/°C
Rev J: 3/ꢀ4/07
SP765ꢀ Wide Input Voltage Range 3A, 900kHz, Buck Regulator
© Copyright 2007 Sipex Corporation
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