13892 datasheet(75/158 Pages) FREESCALE

75 / 158 page

FUNCTIONAL DEVICE OPERATION

SUPPLIES

Analog Integrated Circuit Device Data



Freescale Semiconductor

MC13892

Since the startup default values of the buck regulators are dependent on the state of the PUMS pin, the SWxHI bit settings will

likewise be determined by the PUMS pin. The settings are aligned to the likely application ranges for use cases as given in the

Defaults tables in Power Control System. The following tables define the SWxHI bit states after a startup event is completed, but

can be reconfigured via the SPI if desired, if an alternate range is needed. Care should be taken when changing SWxHI bit to

avoid unintended jumps in the switcher output. The SWxHI setting applies to Normal, Standby, and DVS set points for the

corresponding switcher.

Note that the following efficiency curves were measured with the MC13892 in a socket.

11100

1.300

1.800

11101

1.325

1.825

11110

1.350

1.850

11111

1.375

1.850

71.

Output range not available for SW1. SW1 output range is 0.600-1.375, therefore SW1HI = 1 does not apply to SW1. The SW1HI bit

should always be set to 0.

Table 48. SWxHI States for Power Up Defaults

PUMS1

Ground

Open

VCOREDIG

VCORE

Ground

Open

PUMS2

Open

Ground

SW1HI

SW2HI

SW3HI

SW4HI

Table 47. Buck Regulators (SW1, 2, 3, 4) Output Voltage Programmability

Set point

SWx[4:0]

SWx Output, SWxHI = 0 (Volts)

SWx Output (71), SWxHI = 1 (Volts)

13892 Datasheet(PDF) 75 Page - Freescale Semiconductor, Inc

13892 Datasheet(HTML) 75 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL