MPQ8632 HIGH EFFICIENCY 18V SYNCHRONOUS STEP-DOWN CONVERTER FAMILY FOR 4A TO 20A
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = -40C to +125C, unless otherwise noted.
Parameters
Timer
Symbol Condition
Min
Typ
Max
Units
One-Shot On Time
Minimum On Time(6)
TON
RFREQ=453kΩ, VOUT=1.2V
250
30
ns
ns
TON_MIN
20
40
MPQ8632GLE-10
Other parts
50
100
360
150
420
Minimum Off Time(6)
TOFF_MIN
ns
200
Over-voltage and Under-voltage Protection
OVP Latch Threshold(6)
VOVP_LATCH MPQ8632GLE-10
127%
117%
130%
120%
133%
123%
VFB
VFB
VOVP_NON-
LATCH
OVP Non-latch Threshold
OVP Delay
UVP Threshold(6)
TOVP
2
μs
VUVP
47%
50%
53%
VFB
Reference And Soft Start
TJ = 0°C to +70°C
608
605
602
611
611
611
50
614
617
620
100
25
mV
mV
mV
nA
Reference Voltage
VREF
TJ = 0°C to +125°C
TJ = -40°C to +125°C
VFB = 611mV
Feedback Current
IFB
ISS
Soft Start Charging Current
VSS=0V
16
20
μA
Enable And UVLO
Enable Input Low Voltage
Enable Hysteresis
VILEN
1.1
1.3
250
0
1.5
V
VEN-HYS
mV
VEN = 2V
VEN = 0V
Enable Input Current
IEN
μA
0
VCC Regulator
VCC Under Voltage Lockout
Threshold Rising
VCCVth
3.8
V
VCC Under Voltage Lockout
Threshold Hysteresis
VCCHYS
VCC
500
mV
VCC Regulator
4.8
0.5
V
VCC Load Regulation
Icc=5mA
%
Power Good
Power Good Rising Threshold
Power Good Falling Threshold
Power Good Lower to High Delay
PGVth-Hi
PGVth-Lo
PGTd
87%
91%
80%
2.5
94%
12
VFB
VFB
ms
Power Good Sink Current
Capability
IOL
VOL=600mV
VPG = 3.3V
mA
nA
Power Good Leakage Current
IPG_LEAK
10
MPQ8632 Rev.1.24
8/28/2013
www.MonolithicPower.com
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