10.2.1.3 Application Curve

T

Time (s)

1.30

1.45

1.60

1.75

1.90

2.05

2.20

IN

0.00

2.00

VBAT

0.00

3.30

Vout

3.30

1.242

2.00

OUT (V)

IN+ (V)

VBAT (V)

Time (s)

0.00

Figure 10-4.

10.3 System Examples

10.3.1 Power-On Reset

The reset circuit shown in Figure 10-5 provides a time-delayed release of reset to the MSP430™ microcontroller.

Operation of the circuit is based on a stabilization time constant of the supply voltage, rather than on a

predetermined voltage value. The negative input is a reference voltage created by the internal voltage reference.

The positive input is an RC circuit that provides a power-up delay. When power is applied, the output of the

comparator is low, holding the processor in the reset condition. Only after allowing time for the supply voltage

to stabilize does the positive input of the comparator become higher than the negative input, resulting in a

high output state, releasing the processor for operation. The stabilization time required for the supply voltage

is adjustable by the selection of the RC component values. Use of a lower-valued resistor in this portion of the

circuit does not increase current consumption, because no current flows through the RC circuit after the supply

has stabilized.

TLV3011-Q1, TLV3012-Q1, TLV3011B-Q1, TLV3012B-Q1

SBOS551C – MARCH 2011 – REVISED APRIL 2023

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