HMLQ25201T-R47MSR datasheet(32/52 Pages) RENESAS

32 / 52 page

DA9080

High Current, Highly Configurable System

PMIC with Four Bucks and One LDO

Datasheet

Revision 1.2

08-Feb-2022

CFR0011-120-00

32 of 51

Note 1

At higher loads the bucks will operate in PWM at a fixed frequency. To support light loads the bucks

will operate in pulse frequency modulation (PFM) mode. The bucks move between PFM and PWM

automatically depending on the load requirements.

10 LDO

DA9080 has one LDO which provides a fixed, regulated 3.3 V output voltage.

The LDO has soft-start function and its output voltage gradually increases when the LDO is enabled.

A pull-down resistor for the LDO output is enabled when the LDO is disabled. This feature can be

disabled by setting dedicated register bits.

11 General Purpose Analog-to-Digital Converter

DA9080 features an 8-bit successive approximation register (SAR) analog-to-digital converter (ADC).

The GPADC allows measurement of:

● die temperature

● external voltages (AN0 and AN1)

The GPADC consists of an analog-to-digital converter (ADC) with 8-bit resolution, combined with an

analog input multiplexer to select a variety of channels. The input MUX selects from the inputs and

presents the channel to be measured to the ADC input.

11.1 Measurements on Internal Die Temperature Sensors

A die temperature sensor is placed near known heat sources on the die for managing power. The

sensor consists of a bipolar junction diode which is fed by a current source. A measurement on this

channel produces a reading of the voltage across the diode.

When using the ADC to measure the die temperature sensor, the output ADC code can be converted

into ºC using the formula: T(ºC) = -1.97 * CODE + 349.

11.2 Measurements of External Analog Signals

External analog signals can be measured using the GPADC. The pins AN0 and AN1 are provided as

inputs for signals to be measured. Signals to be measured should be in the range 0 V to 5.1 V. In the

case where the supply voltage, VSYS, is lower than 5.1 V this does not limit the range of the GPADC

and signals up to 5.1 V can still be measured.

Signals from AN0 and AN1 are directly input to the GPADC during conversion and so should not vary

during conversion period. The GPADC assumes signals are DC for the duration of the conversion.

When using the ADC to measure the external signals, the output ADC code can be converted into a

voltage by using the formula: AN0/1 = CODE * 20 mV + 10 mV.

11.3 Triggering GPADC Conversions

GPADC operations are enabled by setting ADC_EN = 0x1. The ADC automatically converts all inputs

sequentially, an ADC read command automatically updates all ADC input values. The 8-bit result is

stored in the PMC_TEMP, PMC_ADC0, and PMC_ADC1 registers.

HMLQ25201T-R47MSR 数据表(PDF) 32 Page - Renesas Technology Corp

HMLQ25201T-R47MSR 数据表(HTML) 32 Page - Renesas Technology Corp

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

数据表下载