ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 5. Static Electrical Characteristics
Characteristics noted under conditions -40°C ≤ TA ≤ 85 °C, GND = 0 V unless otherwise noted. Typical values noted reflect
the approximate parameter means at TA = 25 °C under nominal conditions, unless otherwise noted.
Characteristic
BUCK CONVERTERS (CONTINUED)
Symbol
Min
Typ
Max
Unit
Automatic Mode Change Threshold, Switchover between PFM and PWM
modes
AMCTH
mA
%
-
50
-
Efficiency
-
-
-
-
-
-
75
85
78
82
78
82
-
-
-
-
-
-
PFM, 0.9 V, 1.0 mA
PFM, 01.8 V, 1.0 mA
PWM Pulse Skipping, 1.25 V, 50 mA
PWM Pulse Skipping, 1.8 V, 50 mA
PWM, 1.25 V, 500 mA
PWM, 1.8 V, 500 mA
External Components, Used as a condition for all other parameters
Inductor for SW2, SW3, SW4(16)
LSW234
LSW1
-20%
-30%
-
2.2
1.5
-
+20%
+30%
0.16
+35%
+35%
50
µH
µH
W
Inductor for SW1(16)
Inductor Resistance
RWSW
Bypass Capacitor for SW2, SW3, SW4(17)
COSW234
COSW1
ESRSW
-35%
-35%
5.0
10
2x22
-
µF
µF
mΩ
µF
Bypass Capacitor for SW1(18)
Bypass Capacitor ESR
1.0
4.7
-
Input Capacitor(19)
SWBST
Average Output Voltage(20)
VBST
V
(21)
Nom-5%
-
5.0
-
Nom+5%
120
3.0 V < VIN < 4.65 (1), 0 < IL < ILMAX
Output Ripple
VBSTPP
mVpp
3.0 V < VIN < 4.65, 0 < IL < ILMAX, Excluding reverse recovery of
Schottky diode
Average Load Regulation
VIN = 3.6 V, 0 < IL < ILMAX
VBSTLOR
VBSTLIR
mV/mA
mV
-
-
-
-
0.5
50
Average Line Regulation
3.0 V < VIN < 4.65 V, IL = ILMAX
Notes
16. Preferred device TDK VLS252012 series at 2.5x2.0 mm footprint and 1.2 mm max height
17. Preferably 0603 style 6.3 V rated X5R/X7R type at 35% total make tolerance, temperature spread and DC bias derating such as TDK
C1608X5R0J106M
18. Preferably 0805 style 6.3 V rated X5R/X7R type at 35% total make tolerance, temperature spread and DC bias derating such as TDK
C2012X5R0J226M
19. Preferably 0603 style 6.3 V rated X5R/X7R type at 35% total make tolerance, temperature spread and DC bias derating such as TDK
C1608X5R0J475
20. Output voltage when configured to supply VBUS in OTG mode can be as high as 5.75 V
21. Vin is the low side of the inductor that is connected to BP.
13892
Analog Integrated Circuit Device Data
Freescale Semiconductor
14
FREESCALE [ Freescale ]
