13892 datasheet(14/156 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

13892

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

BUCK CONVERTERS (CONTINUED)

Automatic Mode Change Threshold, Switchover between PFM and PWM

modes

AMCTH

Efficiency

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)

Inductor for SW1(16)

Inductor Resistance

Bypass Capacitor for SW2, SW3, SW4(17)

Bypass Capacitor for SW1(18)

Bypass Capacitor ESR

Input Capacitor(19)

LSW234

LSW1

RWSW

COSW234

COSW1

ESRSW

-20%

-30%

-35%

5.0

1.0

2.2

1.5

2x22

4.7

+20%

+30%

0.16

+35%

µH

µF

SWBST

Average Output Voltage(20)

3.0 V < VIN < 4.65 (1), 0 < IL < ILMAX

(21)

VBST

Nom-5%

5.0

Nom+5%

Output Ripple

3.0 V < VIN < 4.65, 0 < IL < ILMAX, Excluding reverse recovery of

Schottky diode

VBSTPP

120

mVpp

Average Load Regulation

VIN = 3.6 V, 0 < IL < ILMAX

VBSTLOR

0.5

mV/mA

Average Line Regulation

3.0 V < VIN < 4.65 V, IL = ILMAX

VBSTLIR

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.

Table 5. Static Electrical Characteristics

Characteristics noted under conditions -40

°C ≤ T

A ≤ 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

Symbol

Min

Typ

Max

Unit

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