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NB669 Datasheet(PDF) 4 Page - Monolithic Power Systems

No. de pieza NB669
Descripción Electrónicos  24V, High Current Synchronous Buck Converter With LDO
PDF  19 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

NB669 Datasheet(HTML) 4 Page - Monolithic Power Systems

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NB669, 24V, HIGH CURRENT SYNCHRONOUS BUCK CONVERTER WITH LDO
NB669 Rev. 1.01
www.MonolithicPower.com
4
7/23/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
VCC Under Voltage Lockout
Threshold Rising
VCCVth
4.65
4.85
V
VCC Under Voltage Lockout
Threshold Hysteresis
VCCHYS
500
mV
CLK Output
CLK Output High Level Voltage
VCLKH
IVclk= -5mA
4.75
4.95
5.15
V
CLK Output Low Level Voltage
VCLKL
IVclk= 5mA
0
0.05
0.1
V
CLK Frequency
FCLK
TJ = 25°C
300
kHz
LDO Regulator
LDO Regulator
VLDO
4.95
5.1
5.25
V
LDO Load Regulation
ILDO =50mA
5
%
Before switch-over
70
90
120
mA
LDO Load capability
After switch-over
100
mA
Switch Rdson
RSwitch
ILDO =50mA
1.3
2
Ω
VCC Regulator
VCC Regulator
VCC
5
5.2
5.4
V
VCC Load Regulation
Icc=5mA
5
%
Power Good
PG Rising (Good)
PGVth-Hi
95
PG Falling (Fault)
PGVth-Lo
85
PG Rising (Fault)
PGVth-Hi
115
PG Falling (Good)
PGVth-Lo
105
%
VOUT_Ref
Power Good Lower to High Delay
PGTd
0.5
ms
Power Good Sink Current
Capability
VPG
Sink 4mA
0.4
V
Power Good Leakage Current
IPG_LEAK
VPG = 3.3V
100
nA
Thermal Protection
Thermal Shutdown
(6)
TSD
150
°C
Thermal Shutdown Hysteresis
25
°C
Note:
6) Guaranteed by design.



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