Datasheet
Analog Integrated Circuit Device Data
47 Freescale Semiconductor
34709
Functional Block Description
SW1A/B BUCK REGULATOR (CONTINUED)
t
ON-SW1
Turn-on Time
• Enable to 90% of end value IL = 0 mA
- - 500
µs
f
SW1
Switching Frequency
• PLLX = 0
• PLLX = 1
-
-
2.0
4.0
-
-
MHz
I
SW1Q
Quiescent Current Consumption
• APS Mode, IL=0 mA; device not switching
• PFM Mode, IL=0 mA
-
-
160
15
-
-
µA
SW1
Efficiency,
•PFM, 0.9 V, 1.0 mA
•PWM, 1.1 V, 200 mA
•PWM, 1.1 V, 800 mA
•PWM, 1.1 V, 1600 mA
-
-
-
-
54
75
81
76
-
-
-
-
%
(44)
Notes:
43. Transient loading for load steps of ILMAX/2 at 100 mA/s.
44. Efficiency numbers at V
SW1xIN
= 3.6 V, excludes the quiescent current
Table 36. SW1A/B Electrical Specification
Characteristics noted under conditions BP = V
SW1xIN
= 3.6 V, - 40 C T
A
85 C, unless otherwise noted. Typical values at
BP = V
SW1xIN
= 3.6 V and T
A
= 25 °C under nominal conditions, unless otherwise noted.
Symbol Characteristic Min Typ Max Unit Notes