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MMPF0100Z Datasheet(PDF) 58 Page - NXP Semiconductors |
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MMPF0100Z Datasheet(HTML) 58 Page - NXP Semiconductors |
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58 / 128 page  58 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 0 0000000 0.4000 64 1000000 0.8000 1 0000001 0.4250 65 1000001 0.8500 2 0000010 0.4500 66 1000010 0.9000 3 0000011 0.4750 67 1000011 0.9500 4 0000100 0.5000 68 1000100 1.0000 Driver Controller EA Z1 Z2 Internal Compensation SW3AIN SW3ALX SW3AFB ISENSE COSW3A CINSW3A LSW3A I2C Interface SW3A SW3AMODE SW3AFAULT VREF DAC I2C VIN Driver Controller EA Z1 Z2 Internal Compensation SW3BIN SW3BLX SW3BFB ISENSE COSW3B CINSW3B LSW3B EP SW3B SW3BMODE SW3BFAULT VREF DAC I2C VIN |
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