ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 5. Dynamic Electrical Characteristics
Characteristics noted under conditions; 2.7V ≤ VIN ≤ 5.5V, 0.8V ≤ VOUT ≤ 3.3V, -25oC ≤ TA ≤ 85oC, CIN = COUT = 4.7µF,
L1 = 4.7µH(See Figure 1), unless otherwise noted. The typical specifications are measured at the following conditions;
TA = +25oC, VIN = 3.6V, fSW = 2.0MHz with the typical operating circuit (See Figure 1), unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Switching Frequency(7)
fSW
1.8
2.0
2.2
MHz
%
Maximum Duty Cycle(8)
Measured from SW pin
DMAX
95
-
-
100
-
Internal Soft-start Timer
VOUT Rise Time
tS
ms
2.0
Notes
7. fSW can be factory programmed to ±20% of nominal 2.0MHz.
8. The maximum duty limits the range of output voltages achievable for a given input voltage.
MC34727
Analog Integrated Circuit Device Data
Freescale Semiconductor
7
FREESCALE [ Freescale ]
