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AP6508FE датащи(PDF) 4 Page - Diodes Incorporated

номер детали AP6508FE
подробное описание детали  500kHz 21V 3A SYNCHRONOUS DC/DC BUCK CONVERTER
PDF  14 Pages
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производитель  DIODES [Diodes Incorporated]
домашняя страница  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP6508FE датащи(HTML) 4 Page - Diodes Incorporated

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AP6508
500kHz 21V 3A SYNCHRONOUS DC/DC BUCK CONVERTER
AP6508
Document number: DS33437 Rev. 4 - 2
4 of 14
www.diodes.com
July 2011
© Diodes Incorporated
Electrical Characteristics (VIN = 12V, TA = +25°C, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min
Typ.
Max
Unit
IIN
Shutdown Supply Current
VEN = 0V
0
µA
IIN
Supply Current (Quiescent)
VEN = 2.0V, VFB = 1.0V
1.2
mA
RDS(ON)1
High-Side Switch On-Resistance
(Note 6)
120
m
Ω
RDS(ON)2
Low-Side Switch On-Resistance
(Note 6)
20
m
Ω
SWLKG
Switch Leakage Current
VEN = 0V, VSW = 0V
0
10
µA
ILimit
Current Limit
5.8
A
FSW
Oscillator Frequency
VFB = 0.75V
350
500
650
kHz
FFB
Fold-back Frequency
VFB = 300mV
0.3
fSW
DMAX
Maximum Duty Cycle
VFB = 700mV
80
85
%
VFB
Feedback Voltage
TA = -20°C to +85°C
791
807
823
mV
IFB
Feedback Current
VFB = 800mV
10
50
nA
VEN_Rising
EN Rising Threshold
1.1
1.3
1.5
V
VEN_HYS
EN Threshold Hysteresis
0.4
V
IEN
EN Input Current
VEN = 2V
2
μA
VEN = 0V
0
ENTD-Off
EN Turn Off Delay
(Note 6)
5
μs
PGVth-Hi
Power Good Rising Threshold
0.9
VFB
PGVth-Lo
Power Good Falling Threshold
0.7
VFB
PGTD
Power Good Delay
20
μs
VPG
Power Good Sink Current Capability
0.4
V
IPG_LEAK
Power Good Leakage Current
10
nA
ISS
Soft-Start Current
10.5
μA
INUVVth
VIN Under Voltage Threshold Rising
4.0
4.2
4.4
V
INUVHYS
VIN Under Voltage Threshold
Hysteresis
200
mV
VCC
VCC Regulator
5
V
VCC Load Regulation
Icc=5mA
5
%
TSD
Thermal Shutdown
140
°C
Note:
6. Guaranteed by design



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