STNRGPF01 datasheet(25/40 Pages) STMICROELECTRONICS

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STNRGPF01

Electrical characteristics

5.3

Operating conditions

The device must be used in operating conditions that respect the parameters listed in

Table 7. In addition, a full account must be taken for all physical capacitor characteristics

and tolerances.

Table 7. General operating conditions

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VDD1, VDDA1 Operating voltages

5.5

VDD, VDDA Nominal operating voltages

VCOUT

Core digital power supply

1.8(1)

1. Internal core power supply voltage.

CVCOUT: capacitance of

external capacitor(2)

2. Care should be taken when the capacitor is selected due to its tolerance, its dependency on temperature,

DC bias and frequency.

at 1 MHz

470

3300

ESR of external capacitor(1)

0.05

0.2



ESL of external capacitor(1)



(3)

3. To calculate PDmax (TA), use the formula PDmax = (TJmax - TA)/JA.

FR4 multilayer PCB

TSSOP38

°C/W

Ambient temperature

Pd = 100 mW

-40

105

°C

Table 8. Operating conditions at power-up/power-down

Symbol

Parameter

Conditions Min.(1)

1. Guaranteed by design, not tested in production.

Typ. Max.(1) Unit

tVDD

VDD rise time rate

2 µs/V

1 s/V(2)

2. The power supply ramp must be monotone.

VDD fall time rate

2 µs/V

1 s/V(2)

tTEMP

Reset release delay

VDD rising

VIT+

Power-on reset threshold

2.65

2.8

2.98

VIT-

Brownout reset threshold

2.58

2.73

2.88

VHYS(BOR) Brownout reset hysteresis

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