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FAN2108MPX Scheda tecnica(PDF) 5 Page - Fairchild Semiconductor

Il numero della parte FAN2108MPX
Spiegazioni elettronici  TinyBuck??3-24 V Input, 8 A, High-Efficiency, Integrated Synchronous Buck Regulator
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN2108MPX Scheda tecnica(HTML) 5 Page - Fairchild Semiconductor

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© 2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN2108 • Rev. 1.0.2
5
Electrical Specifications
Electrical specifications are the result of using the circuit shown in Figure 1 unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Power Supplies
ICC
VCC Current
SW=Open, FB=0.7 V, VCC=5 V,
fSW=600 KHz
8
12
mA
Shutdown: EN=0, VCC=5 V
7
10
µA
VUVLO
VCC UVLO Threshold
Rising VCC
4.1
4.3
4.5
V
Hysteresis
300
mV
Oscillator
f
Frequency
RT=50 K
Ω
255
300
345
KHz
RT=24 K
Ω
540
600
660
KHz
tON
Minimum On-Time
(2)
50
65
ns
VRAMP
Ramp Amplitude, peak-to–peak
16 VIN, 1.8 VOUT, RT=30 K
Ω,
RRAMP=200 K
Ω
0.53
V
tOFF
Minimum Off-Time
(2)
100
150
ns
Reference
VFB
Reference Voltage (see Figure 4 for
Temperature Coefficient)
FAN2108MPX, 25°C
794
800
806
mV
FAN2108EMPX, 25°C
795
800
805
mV
Error Amplifier
G
DC Gain
(2)
VCC=5 V
80
85
dB
BW
Gain Bandwidth Product
(2)
12
15
MHz
VCOMP
Output Voltage
0.4
3.2
V
ISINK
Output Current, Sourcing
VCC=5 V, VCOMP=2.2 V
1.5
2.2
mA
ISOURCE
Output Current, Sinking
VCC=5 V, VCOMP=1.2 V
0.8
1.2
mA
IBIAS
FB Bias Current
VFB=0.8 V, 25°C
-850
-650 -450
nA
Protection and Shutdown
ILIM
Current Limit
RILIM Open at 25°C (see Circuit
Description)
12
15
18
A
IILIM
ILIM Current
-11
-10
-9
µA
TTSD
Over-Temperature Shutdown
Internal IC Temperature
+155
°C
THYS
Over-Temperature Hysteresis
+30
°C
VOVP
Over-Voltage Threshold
Two Consecutive Clock Cycles
110
115
121 %VOUT
VUVLO
Under-Voltage Shutdown
16 Consecutive Clock Cycles
68
73
78
%VOUT
VFLT
Fault Discharge Threshold
Measured at FB Pin
250
mV
VFLT_HYS Fault Discharge Hysteresis
Measured at FB Pin (VFB ~500 mV)
250
mV
Soft-Start
tSS
VOUT to Regulation (T0.8)
Frequency=600 KHz
5.3
ms
tEN
Fault Enable/SSOK (T1.0)
6.7
ms
Note:
2.
Specifications guaranteed by design and characterization; not production tested.


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