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FAN5358S713X Fiches technique(PDF) 4 Page - Fairchild Semiconductor

No de pièce FAN5358S713X
Description  2MHz, 500mA, SC70 Synchronous Buck Regulator
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5358 • Rev. 1.0.1
4
Electrical Characteristics
Minimum and maximum values are at VIN = 2.7V to 5.5V, TA = -40°C to +85°C, circuit of Figure 1 unless otherwise noted.
Typical values are at TA = 25°C, VIN =3.6V.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Power Supplies
IQ
Quiescent Current
No Load, EN=VIN
25
48
µA
I(SD)
Shutdown Supply Current
EN = GND
0.05
1.00
µA
VUVLO
Under-Voltage Lockout Threshold
Rising VIN
2.4
2.6
V
VUVHYST
Under-Voltage Lockout Hysteresis
225
mV
V(ENH)
Enable HIGH-Level Input Voltage
1.2
V
V(ENL)
Enable LOW-Level Input Voltage
0.4
V
I(EN)
Enable Input Leakage Current
EN = VIN or GND
0.01
1.00
µA
Oscillator
fOSC
Switching Frequency
In PWM Mode
2
MHz
Regulation
VO
Output Voltage
Accuracy
1.0V
ILOAD = 0 to 500mA
-4.5
+4.5
%
1.2V
ILOAD = 0 to 500mA
-4.5
+4.5
1.3V
ILOAD = 0 to 500mA
-4.5
+4.5
1.8V
ILOAD = 0 to 500mA
-4.0
+4.0
tSS
Soft-Start
From EN Rising Edge
70
µs
Output Driver
RDS(on)
PMOS On Resistance
VIN = VGS = 3.6V
750
m
Ω
NMOS On Resistance
VIN = VGS = 3.6V
650
m
Ω
ILIM
PMOS Peak Current Limit
Open-Loop
(1)
750
850
1150
mA
TTSD
Thermal Shutdown
150
°C
THYS
Thermal Shutdown Hysteresis
20
°C
Note:
5.
The Electrical Characteristics table reflects open-loop data. Refer to Operation Description and Typical Characteristic for
closed-loop data.
Block Diagram
Q2
Q1
SW
VIN
GND
VOUT
L1
CIN
LOGIC
&
GATE
DRIVE
U1
RAMP
GEN
REF
EN
COUT
VOUT
GND
Figure 3. IC Block Diagram


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