FAN2103_12 Datasheet, PDF (5/14 Pages) Fairchild Semiconductor – 3 A, 24 V Input, Integrated Synchronous Buck Regulator

Electrical Specifications
Recommended operating conditions are the result of using the circuit shown in Figure 1 unless otherwise noted.
Parameter
Conditions
Min.
Power Supplies
V_CC Current
V_CC UVLO Threshold
SW = Open, FB = 0.7 V, V_CC = 5 V,
f_SW = 600 KHz
Shutdown: EN = 0, V_CC = 5 V
Rising V_CC
4.1
Hysteresis
Oscillator
Frequency
R_T = 50 KΩ
255
R_T = 24 KΩ
540
Minimum On-Time⁽²⁾
Ramp Amplitude, pk–pk
Minimum Off-Time⁽²⁾
16 V_IN, 1.8 V_OUT, R_T = 30 KΩ,
R_RAMP = 200 KΩ
Reference
FAN2103M, 25°C
794
Reference Voltage (V_FB)
FAN2103EM, 25°C
795
Temperature Coefficient
FAN2103M, -10 to +85°C
FAN2103EM, -40 to +85°C
Error Amplifier
DC Gain⁽²⁾
Gain Bandwidth Product⁽²⁾
Output Voltage (V_COMP)
Output Current, Sourcing
Output Current, Sinking
FB Bias Current
Protection and Shutdown
Current Limit
I_LIM Current
Over-Temperature Shutdown
Over-Temperature Hysteresis
Over-Voltage Threshold
Under-Voltage Shutdown
Fault Discharge Threshold
Fault Discharge Hysteresis
Soft-Start
V_OUT to Regulation (T0.8)
Fault Enable/SSOK (T1.0)
V_CC = 5 V
V_CC = 5 V, V_COMP = 2.2 V
V_CC = 5 V, V_COMP = 1.2 V
V_FB = 0.8 V, 25°C
R_ILIM Open
25°C, V_CC = 5 V
Internal IC Temperature
2 Consecutive Clock Cycles
16 Consecutive Clock Cycles
Measured at FB Pin
Measured at FB Pin (V_FB ~500 mV)
Frequency = 600 KHz
80
12
0.4
1.5
0.8
-850
3.8
9
110
68
Note:
2. Specifications guaranteed by design and characterization; not production tested.
Typ. Max. Unit
8
12
mA
7
10
µA
4.3
4.5
V
300
mV
300
345 KHz
600
660 KHz
50
65
ns
0.53
V
100
150
ns
800
806
mV
800
805
mV
50
PPM
70
PPM
85
15
2.2
1.2
-650
3.2
-450
dB
MHz
V
mA
mA
nA
5.0
10
+160
+30
115
73
250
250
7.0
A
11
µA
°C
°C
120 %V_OUT
78
%V_OUT
mV
mV
5.3
ms
6.7
ms
© 2007 Fairchild Semiconductor Corporation
FAN2103 • Rev. 1.0.8
5
www.fairchildsemi.com