MCIMX280CVM4B Просмотр технического описания (PDF) - Freescale Semiconductor

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MCIMX280CVM4B

i.MX28 Applications Processors Data Sheet for Consumer Products

Freescale Semiconductor 

Table 13 illustrates the power supply characteristics.

Table 13. Power Supply Characteristics

Parameter

Min

Typ

Max

Units

Linear Regulators

Output Voltage Accuracy (VDDIO, VDDA, VDDM, VDDD)1

–3

—

VDDIO Maximum Output Current (VDDIO = 3.30 V, VDD5V = 4.75 V)2, 3

270

—

VDDIO Maximum Output Current (VDDIO = 3.30 V, VDD5V = 4.40 V)2, 3

200

—

VDDM Maximum Output Current (VDDM = 1.5 V)2

160

—

VDDA Maximum Output Current (VDDA = 1.8 V)2, 3

225

—

VDDD Maximum Output Current (VDDD = 1.2 V)2, 3

200

—

DCDC Converters

+3

%

—

mA

—

mA

—

mA

—

mA

—

mA

Output Voltage Accuracy (DCDC_VDDIO, DCDC_VDDA,

DCDC_VDDD)1

–3

—

DCDC_VDDD Maximum Output Current (VDDD = 1.55 V)4, 5

DCDC_VDDA Maximum Output Current (VDDA = 1.8 V)4, 5

250

—

200

—

DCDC_VDDIO Maximum Output Current (VDDIO = 3.15 V, 3.3 V < BATT

250

—

< 4.242 V)4, 5, 6

+3

%

—

mA

—

mA

—

mA

VDD4P2 Regulated Output

VDD4P2 Output Voltage Accuracy (TARGET=4.2V)1

VDD4P2 Output Current Limit Accuracy (VDD5V = 4.75 V,

ILIMIT=480 mA)7

VDD4P2 Output Current Limit Accuracy (VDD5V=4.75 V,

ILIMIT=100 mA)7

–3

—

+3

%

TBD

480

TBD

mA

TBD

100

TBD

mA

Battery Charger

Final Charge Voltage Accuracy (TARGET=4.2 V)

-2

—

+1

%

1 No load.

2 Maximum output current measured when output voltage droops 100 mV from the programmed target voltage with no load

present.

3 Because the internal linear regulators are cascaded, it is not possible to simultaneously operate the VDDIO, VDDA, VDDM, and

VDDD linear regulators at the maximum specified load current. For example, the VDDIO linear regulator provides current to both

the VDDIO 3.3 V supply rail as well as the VDDM and VDDA linear regulator inputs. Likewise, the VDDA linear regulator provides

current to both the 1.8 V supply rail as well as the VDDD linear regulator input. The application designer should ensure the

following two conditions are met:

(VDDIO Load Current + VDDM Load Current + VDDA Load Current) < VDDIO Maximum Output Current

(VDDA Load Current + VDDD Load Current) < VDDA Maximum Output Current

4 DCDC Double FETs Enabled, Inductor Value = 15 μH.

5 The DCDC Converter is a triple output buck converter. The maximum output current capability of each output of the converter

is dependent on the loads on the other two outputs. For a given output, it may be possible to achieve a maximum output current

higher than that specified by ensuring the load on the other outputs is well below the maximum.

6 Assumes simultaneous load of IDDD = 250 mA@ 1.55 V and IDDA = 200 mA@1.8 V.

i.MX28 Applications Processors Data Sheet for Consumer Products, Rev. 1

Freescale Semiconductor

15

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