NB675 –24V, HIGH CURRENT SYNCHRONOUS BUCK CONVERTER
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
VCC Regulator
VCC Regulator
VCC
4.8
5.1
5
5.3
V
VCC Load Regulation
Icc=8mA
%
Power Good
FB Rising (Good)
FB Falling (Fault)
FB Rising (Fault)
FB Falling (Good)
PGVth-Hi
PGVth-Lo
PGVth-Hi
PGVth-Lo
95
85
%VREF
115
105
450
Power Good Low to High Delay
PGTd
VPG
μs
V
Power Good Sink Current
Capability
Sink 4mA
0.4
1
Power Good Leakage Current
VTTREF Output
IPG_LEAK
VPG = 3.3V
μA
VTTREF Output Voltage
VTTREF
VDDQSEN/2
50%
IVTTREF<0.1mA,
1V<VDDQ<1.4V
48.2%
51.8%
52%
Output Voltage tolerance to
VDDQ
IVTTREF<10mA,
1V<VDDQ<1.4V
48%
10
50%
15
Current Limit
VTT LDO
ILIMIT_VTTREF
mA
VTT Output Voltage
VTT
VTTREF
-10mA<IVTT<10mA,
1V<VDDQ<1.4V
-20
-45
20
45
mV
mV
VTT tolerance to VTTREF
-1A<IVTT<1A,
1V<VDDQ<1.4V
Source Current Limit
Sink Current Limit
ILIMIT_SOUCE
ILIMIT_SINK
1.8
1.6
A
A
Thermal Protection
Thermal Shutdown(6)
TSD
150
25
°C
°C
Thermal Shutdown Hysteresis
Note:
6) Guaranteed by design.
NB675 Rev. 1.0
1/14/2013
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