FAN21SV06_12 Datasheet, PDF (5/17 Pages) Fairchild Semiconductor – TinyBuck™ 6 A, 24V Single-Input Integrated Synchronous Buck Regulator with Synchronization Capability

Electrical Characteristics
Recommended operating conditions, using the circuit in Figure 1, with V_IN, V_{IN_Reg}=12 V, unless otherwise noted.
Parameter
Conditions
Min. Typ. Max. Units
Power Supplies
Operating Current
(VIN+VIN_Reg)
VIN_Reg Operating Current
VIN_Reg Quiescent Current
VIN_Reg Standby Current
5V_Reg Output Voltage
V_IN=12 V, 5 V_Reg open, CLK open,
f_SW=500 KHz, No Load
EN=High, 5 V_Reg open, CLK open,
f_SW=500 KHz
EN=High, FB=0.9 V
EN=0, V_IN=12 V
Internal V_CC Regulator, No Load
(6.5 V <VIN_Reg<24 V)
22
30
mA
11
mA
4
5
mA
1
mA
4.7
5.0
5.3
V
5V_Reg Max Current Load
VIN_Reg=12 V)
5
mA
VIN_Reg UVLO Threshold
Rising V_IN, V_IN=VIN_Reg
Falling V_IN, V_IN=VIN_Reg
Reference
Reference Voltage measured FAN21SV06M, 25°C
794
at FB (See Figure 4 for
Temperature Coefficient)
FAN21SV06EM, 25°C
795
Oscillator
Frequency
R_T=50 kΩ to GND (Master Mode)
255
R_T=24 kΩ to GND (Master Mode)
540
Frequency in Slave Mode
compared to Master Mode
R_T=24 kΩ to 50kΩ to 5 V_Reg
(Slave Mode)
-15
Minimum On-Time ⁽²⁾
Duty Cycle
Ramp Amplitude,
Peak–to-Peak⁽²⁾
Minimum Off-Time ⁽²⁾
V_IN=6.5 V, f_SW=600 KHz
16 V_IN, 1.8 V_OUT, R_T=30 kΩ, R_RAMP=200 kΩ
Synchronization
CLK Output Pulse Width
CLK Output Sink Current
CLK Output Source Current
CLK Input Pulse Width
CLK Input Source Current
CLK Input Threshold, Rising
Master (R_T to GND)
Master, V_CLK=0.4 V
Master, V_CLK=2 V
Slave: V_CLK > 2 V
Slave: V_CLK=1 V
Slave
70
0.25
-2.5
50
-230
1.73
Soft-Start
V_OUT to Regulation (T_0.8)
Fault Enable/SSOK (T_1.0)
Error Amplifier
DC Gain ⁽²⁾
Gain Bandwidth Product⁽²⁾
Output Voltage Swing (V_COMP)
Output Current, Sourcing
Output Current, Sinking
FB Bias Current
Frequency=500 KHz
VIN_Reg > 6.5 V
5V_Reg=5 V, V_COMP=2.2 V
5V_Reg=5 V, V_COMP=1.2 V
V_FB=0.8 V, 25°C
80
12
0.4
1.5
0.8
-850
Note:
2. Specifications guaranteed by design and characterization; not production tested.
5.6
6.3
V
5
V
800
806
mV
800
805
mV
300
600
40
80
0.5
100
85
-200
1.83
2.5
3.1
85
15
2.2
1.2
-650
345 KHz
660 KHz
+15
%
65
ns
85
%
V
150
ns
100
ns
0.35 mA
-2.0
mA
ns
-170
µA
1.93
V
ms
ms
4.0
2.5
1.5
-450
dB
MHz
V
mA
mA
nA
© 2006 Fairchild Semiconductor Corporation
FAN21SV06 Rev. 1.0.3
5
www.fairchildsemi.com