STA1090 datasheet(71/127 Pages) STMICROELECTRONICS

71 / 127 page

DS13319 Rev 2

71/127

STA108x, STA109x

Electrical Characteristics

126

4.11.5

USB 1V8 LDO (3V3 TO 1V8 Low Power Regulator)

4.11.6

USB 1V1 LDO (3V3 TO 1V1 Low Power Regulator)

Table 37. 3V3 TO 1V8 regulator

Symbol

Parameter

Limit values

Unit

Min

Typ

Max

VASupply

Analog Supply(1)

3.0

3.3

3.6

Vout

Output Voltage @ Iload = max

1.71

1.87

Cload

Total off chip capacitance value(2)

-4.7

µF

ESR of each external capacitor in frequency range

of 100 kHz - 100 MHz

150

mΩ

PSRR_DC

Power supply rejection at DC @ NO load

-40

PSRR

Power supply rejection at 2 MHz @ NO load

-11

Tstart

Start up time from power down to active after input

supply stabilizes (Supply rise time of 1µs)

300

µs

1. USB_VREG3V3_1V8, USB0_VDD3V3 & USB1_VDD3V3 are internally shorted in the device IO ring.

2. This is mandatory for proper device functionality.

Table 38. 3V3 TO 1V1 regulator

Symbol

Parameter

Limit values

Unit

Min

Typ

Max

VASupply

Analog Supply

3.0

3.3

3.6

Vout

Output Voltage @ Iload = max

1.0

1.1

Cload

Total off chip capacitance value(1)

-4.7

µF

PSRR_DC

Power supply rejection at DC @ Full load

-30

PSRR

Power supply rejection at 1 MHz @ Full load

-28

Tstart

Start up time from power down to active after

input supply stabilizes (Supply rise time of

1 µs)

300

µs

1. Mandatory for proper device functionality.

STA1090 데이터시트(PDF) 71 Page - STMicroelectronics

STA1090 데이터시트(HTML) 71 Page - STMicroelectronics

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 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL