NB650/NB650H – 6A, 28V, FAST-TRANSIENT, SYNCHRONOUS STEP-DOWN CONVERTERS
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min Typ Max Units
Input Supply Current (Shutdown)
Input Supply Current (Quiescent)
Switch Leakage
IIN
IIN
VEN = 0V
0
μA
μA
μA
A
VEN = 2V, VFB =0.65V
VEN = 0V, VSW = 0V or 12V
tON>200ns
400
0
SWLKG
ILIMIT
tON
1
Current Limit
8
10
One-Shot On Time
RFREQ=200kΩ, VOUT=1.2V
RFREQ=200kΩ
200
100
1.2
50
ns
ns
μs
μs
mV
nA
μA
μA
V
Minimum Off Time
tOFF
tFB
Fold-back Off Time(5)
OCP hold-off time(5)
Feedback Voltage
ILIM=1
tOC
ILIM=1
VFB
IFB
594 600
606
100
Feedback Current
VFB = 600mV
VSS=0V
10
10
10
Soft Start Charging Current
Soft Stop Charging Current
EN Input Low Voltage
EN Input High Voltage
ISS
ISS
VSS=0.6V
VILEN
VIHEN
0.4
2
V
VEN = 2V
VEN = 0V
1.5
0
EN Input Current
IEN
μA
OVP Feedback Threshold
UVP Feedback Threshold(5)
VID Inputs Low Voltage
VID Inputs High Voltage
VID Inputs Current
VFB-OV
VFB-UV
VILVID
VIHVID
IVID
0.8
0.4
V
V
0.4
V
2
V
0
μA
Equivalent FB Slew Rate During VID
SRFB
±20
mV/μs
On-The-Fly(5)
VID Switch On Resistance(5)
Power Good Rising Threshold
Power Good Falling Threshold
Power Good Delay
VIDRDS-ON
PGVth-Hi
PGVth-Lo
PGTd
100
0.9
Ω
VFB
VFB
ms
V
0.85
0.5
Power Good Sink Current Capability
Power Good Leakage Current
Standby Mode Delay Time(5)
VPG
Sink 4mA
0.4
10
IPG_LEAK
tSTANDBY
VPG = 3.3V
nA
μs
12
4
VIN Under Voltage Lockout Threshold
Rising
INUVVth
V
VIN Under Voltage Lockout Threshold
Hysteresis
Thermal Shutdown(5)
INUVHYS
TSD
800
150
mV
°C
Note:
5) Not tested. Not guaranteed.
NB650/NB650H Rev. 1.12
www.MonolithicPower.com
3
10/11/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
MPS [ MONOLITHIC POWER SYSTEMS ]
