SPSB081 datasheet(59/137 Pages) STMICROELECTRONICS

59 / 137 page

Symbol

Parameter

Condition

Min Typ Max Unit Item

ΔVo(1)

Output voltage tracking

accuracy

Icc2 = 100 µA to 100 mA,

Icc1 = 30 mA, VSREG = 6.5 V to 28 V

-20

mV C.057

VDP2

Drop-out voltage

ILOAD = 30 mA;

VSREG = 5.25 V (V2 = 5 V) and VSREG = 3.55 V

(V2 = 3.3 V)

0.3

0.5

C.022

ILOAD =100 mA AT T= 25°C;

VSREG =5.0 V (V2 = 5.0 V) and

VSREG = 3.55 V (V2 = 3.3 V)

0.75 0.85

C.058

ICCmax2 Output current limitation

400 600 1200 mA C.023

Cload(2)(3) Load capacitor

Ceramic (±20%)

μF

C.024

V2fail_5

V2 short circuit voltage to switch

V2 off and set SPI bit

V2 forced (V2 = 5 V)

C.025

V2fail_33

V2 forced (V2 = 3.3 V)

1.3

C.060

tV2fail

V2 fail filter time

Tested by scan

µs

C.068

tV2short

V2 short filter time

Tested by scan

ms C.026

1. Output voltage tracking accuracy are guaranteed only in DC condition.

2. Nominal capacitor value required for stability of the regulator. Tested with 1 µF ceramic (±20%). Capacitor must be located

close to the regulator output pin. A 2.2 μF capacitor value is recommended to minimize the DPI stress in the application.

3. Guaranteed by design.

5.5

Reset output

The voltages are referred to GND and currents are assumed positive, when the current flows into the pin.

4 V ≤ VS ≤ 28 V; 4 V ≤ VSREG ≤ 28 V; TJ = from -40 °C to 150 °C, unless otherwise specified.

Table 32. Reset output

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Item

VRT1_5

Reset threshold voltage1

VV1 decreasing (V1 = 5 V)

3.3

3.5

3.7

C.027

VRT1_33

VV1 decreasing (V1 = 3.3 V)

2.5

2.65

2.75

C.061

VRT2_5

Reset threshold voltage2

VV1 decreasing (V1 = 5 V)

3.6

3.8

C.028

VRT2_33

VV1 decreasing (V1 = 3.3 V)

2.6

2.75

2.85

C.062

VRT3_5

Reset threshold voltage3

VV1 decreasing (V1 = 5 V)

3.8

4.0

4.2

C.029

VRT3_33

VV1 decreasing (V1 = 3.3 V)

2.7

2.85

2.95

C.063

VRT4-1_5

Reset threshold voltage4

VV1 decreasing (V1 = 5 V)

4.4

4.6

4.8

C.030

VRT4-1_33

VV1 decreasing (V1 = 3.3 V)

2.8

2.9

3.05

C.064

VRT4-2_5

Reset threshold voltage4

VV1 increasing (V1 = 5 V)

4.65

4.8

4.9

C.031

VRT4-2_33

VV1 increasing (V1 = 3.3 V)

2.95

3.1

3.2

C.065

VRESET

Reset pin low output voltage

V1 > 1 V, IRESET = 5 mA

0.2

0.4

C.032

RRESET

Reset pull up int. resistor

kΩ

C.033

tRR

Reset reaction time

Iload = 1 mA; tested by scan

μs

C.034

tUV1

V1 under-voltage filter time

Tested by scan

μs

C.035

tRD

Reset pulse duration

Tested by scan

1.5

2.0

2.5

C.036

SPSB081

Reset output

DS14048 - Rev 3

page 59/137

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