MMPF0100Z datasheet(58/128 Pages) NXP

58 / 128 page

NXP Semiconductors

PF0100Z

FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS

Figure 19. SW3A/B independent output block diagram

6.4.4.5.4

SW3A/B setup and control registers

SW3A/B output voltage is programmable from 0.400 V to 3.300 V; however, bit SW3x[6] in register SW3xVOLT is read-only during normal

operation. Its value is determined by the default configuration, or may be changed by using the OTP registers. Therefore, once SW3x[6]

is set to “0”, the output is limited to the lower output voltages from 0.40 V to 1.975 V with 25 mV increments, as determined by bits

SW3x[5:0]. Likewise, once bit SW3x[6] is set to "1", the output voltage is limited to the higher output voltage range from 0.800 V to 3.300 V

with 50 mV increments, as determined by bits SW3x[5:0].

In order to optimize the performance of the regulator, it is recommended that only voltages from 2.00 to 3.300 V be used in the high range

and the lower range be used for voltages from 0.400 V to 1.975 V.

The output voltage set point is independently programmed for normal, standby, and sleep mode by setting the SW3x[5:0],

SW3xSTBY[5:0], and SW3xOFF[5:0] bits respectively; however, the initial state of the SW3x[6] bit is copied into the SW3xSTBY[6] and

SW3xOFF[6] bits. Therefore, the output voltage range remains the same on all three operating modes. Table 64 shows the output voltage

coding valid for SW3x.

Note: Voltage set points of 0.6 V and below are not supported.

Table 64. SW3A/B output voltage configuration

Low output voltage range(50)

High output voltage range

Set point

SW3x[6:0]

SW3x output

Set point

SW3x[6:0]

sw3x output

0000000

0.4000

1000000

0.8000

0000001

0.4250

1000001

0.8500

0000010

0.4500

1000010

0.9000

0000011

0.4750

1000011

0.9500

0000100

0.5000

1000100

1.0000

Driver

Controller

Internal

Compensation

SW3AIN

SW3ALX

SW3AFB

ISENSE

COSW3A

CINSW3A

LSW3A

I2C

Interface

SW3A

SW3AMODE

SW3AFAULT

VREF

DAC

I2C

VIN

Driver

Controller

Internal

Compensation

SW3BIN

SW3BLX

SW3BFB

ISENSE

COSW3B

CINSW3B

LSW3B

SW3B

SW3BMODE

SW3BFAULT

VREF

DAC

I2C

VIN

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