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FAN5307 Datasheet, PDF (5/13 Pages) Fairchild Semiconductor – High-Efficiency Step-Down DC-DC Converter
Electrical Characteristics for Fixed VOUT = 1.8V Version
VIN = 2.5V to 5.5V, IOUT = 200mA, EN = VIN, CIN = 4.7µF, COUT = 22µF, LX = 10µH, TA = -40°C to +85°C, unless
otherwise noted. Typical values are at TA = 25°C.
Parameter
PFM to PWM Transition Voltage
(Note 4)
PFM to PWM Transition Voltage
(Note 4)
Output Voltage during Mode
Transition (Note 5, 6)
Over Voltage Clamp Threshold
Conditions
VIN = 3.7V, TA = 25°C,
0.1mA ≤ IOUT ≤ 300mA
VIN = 4.2V, TA = 25°C,
0.1mA ≤ IOUT ≤ 300mA
Incl. line, load, load transients,
and temperature
Min.
1.7
Typ.
1.878
Max.
72
Units
mV
72
mV
1.93
V
1.93
V
Note:
4. Transition voltage is defined as the difference between the output voltage measured at 0.1mA (PFM mode) and
300mA (PWM mode), respectively.
5.
200
2
0
tr = 10µS
tf = 2µS
ss
0.01
0.587 0.589
4.6
Load Transient Response Test Waveform
Time (mSec)
6. These limits also apply to any mode transition caused by any kind of load transition within specified output current
range.
5
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FAN5307 Rev. 1.0.4