FAN2110 Datasheet, PDF (5/17 Pages) Fairchild Semiconductor – TinyBuck™, 3-24V Input, 10A, High-Efficiency, Integrated Synchronous Buck Regulator

Electrical Specifications
Electrical specifications are the result of using the circuit shown in Figure 1 with VIN=12V, unless otherwise noted.
Symbol
Parameter
Conditions
Power Supplies
ICC
VCC Current
VUVLO VCC UVLO Threshold
SW=Open, VFB=0.7V, VCC=5V,
fSW=600KHz
Shutdown: EN=0, VCC=5V
Rising VCC
Hysteresis
Oscillator
fSW
tONmin
Frequency
Minimum On-Time⁽²⁾
RT=50KΩ to GND
RT=24KΩ to GND
VRAMP Ramp Amplitude, Peak-to-Peak
tOFFmin Minimum Off-Time⁽²⁾
Reference
16VIN, 1.8VOUT, RT=30KΩ,
RRAMP=200KΩ
VFB
Reference Voltage (see Figure 4 for ^{FAN2110MPX, 25°C}
Temperature Coefficient)
FAN2110EMPX, 25°C
Error Amplifier
G
DC Gain⁽²⁾
GBW Gain Bandwidth Product⁽²⁾
VCOMP Output Voltage⁽²⁾
ISINK Output Current, Sourcing
ISOURCE Output Current, Sinking
IBIAS FB Bias Current
Protection and Shutdown
VCC=5V
VCC=5V, VCOMP=2.2V
VCC=5V, VCOMP=1.2V
VFB=0.8V, 25°C
ILIM
Current Limit (see Circuit
Description)⁽²⁾
RILIM=182 KΩ,, 25°C, fSW=500KHz,
VOUT=1.5V, RRAMP=243KΩ,
16 Consecutive Clock Cycles⁽³⁾
IILIM
TTSD
THYS
ILIM Current
Over-Temperature Shutdown⁽²⁾
Over-Temperature Hysteresis⁽²⁾
VOVP Over-Voltage Threshold
VUVSD Under-Voltage Shutdown
VFLT Fault Discharge Threshold
VFLT_HYS Fault Discharge Hysteresis
Soft-Start
VCC=5V, 25°C
Internal IC Temperature
2 Consecutive Clock Cycles⁽³⁾
16 Consecutive Clock Cycles⁽³⁾
Measured at FB Pin
Measured at FB Pin (VFB ~500mV)
tSS
VOUT to Regulation (T0.8)
tEN
Fault Enable/SSOK (T1.0)⁽²⁾
fSW=500KHz
Min. Typ. Max. Unit
8 12 mA
7 10 µA
4.1 4.3 4.5 V
300
mV
255 300 345 KHz
540 600 660 KHz
50 65 ns
0.53
V
100 150 ns
794 800 806 mV
795 800 805 mV
80
12
0.4
1.5
0.8
-850
85
15
2.2
1.2
-650
3.2
-450
dB
MHz
V
mA
mA
nA
12 14 16
A
-11 -10 -9 µA
+155
°C
+30
°C
110 115 121 %VOUT
68 73 78 %VOUT
250
mV
250
mV
5.3
ms
6.7
ms
Continued on the following page…
© 2008 Fairchild Semiconductor Corporation
FAN2110 • Rev. 1.0.2
5
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