STM32U535NET3QTR datasheet(228/278 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32U535xx

228/278

DS14217 Rev 1

5.3.24

Voltage reference buffer characteristics

Table 113. VREFBUF characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply

voltage

Normal mode

VRS = 000

1.8

3.6

VRS = 001

2.1

VRS = 010

2.4

VRS = 011

2.8

Degraded

mode(2)

VRS = 000

1.62

-1.8

VRS = 001

2.1

VRS = 010

2.4

VRS = 011

2.8

VREFBUF

_OUT

(3)

Voltage reference

buffer output

Normal mode at

VDDA = 3 V,

TJ = 30 °C,

Iload = 10 µA

VRS = 000

1.496

1.5

1.504

VRS = 001

1.795

1.8

1.805

VRS = 010

2.042

2.048

2.054

VRS = 011

2.493

2.5

2.507

Degraded

mode(2)

VRS = 000

Min (VDDA - 0.15

;1.496)

-1.504

VRS = 001

Min (VDDA - 0.15

;1.795)

-1.805

VRS = 010

Min (VDDA - 0.15

;2.042)

-2.054

VRS = 011

Min (VDDA - 0.15

;2.493)

-2.507

TRIM

Trim step

0.1

0.175

0.25

Load capacitor(4)

0.5

1.10

1.50

µF

esr

CL equivalent serial

resistor

Ω

Iload

Static load current

RPD

Pull-down resistance

400

Ω

Iline_reg Line regulation

VDDAmin ≤ VDDA ≤ 3.6 V,

Normal mode,

500 µA ≤ Iload ≤ 4 mA

±0.016

±0.033

±0.053

Iload_reg Load regulation(5)

Normal mode,

500 μA ≤ Iload ≤ 4 mA

-50

400

ppm/

TCoeff

Temperature

coefficient

–40 °C < TJ < +130 °C

Tcoeff_vrefint

+ 50

ppm/

°C

PSRR

Power supply

rejection

100 kHz

STM32U535NET3QTR Datasheet(PDF) 228 Page - STMicroelectronics

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