STCC02-ED5

3/13

Its output voltage accuracy, that contributes to the ADC accuracy of the MCU, is better than ± 10 % in the

STCC02 input voltage range from 7 to 27 V; and its DC output current is less than 20 mA to keep the inter-

nal dissipation compatible with thermal package capability.

The regulator includes also an over current limiter to prevent high current conditions during the power up

inrush or the output short circuit. This limiter is made of a serial shunt resistance as current sensor and a

circuit that regulates the input over current.

This circuit ensures a Low Voltage Detection (LVD) of the output voltage of the regulator. Most micro-

controllers have an active RESET pin in the low state: so, the /RST pin will be active at low state.

set at 40

If C

= 47 nF, T

= 6 ms

UP

UP

External

Capacitor

/RST

PROGRAMMABLE

DELAY

NOISE FILTER

V = 4.25 V

H

500

Ω

V = 3.75 V

L

T

V

DD

circuit output

internal latch output

T

C

RST\

T

V

DD

circuit output

internal latch output

T

C

RST\

ZVS

COM

100 k

Ω

500

Ω

25 k

Ω

SYN

20 µs Filter

AC

LINE

Q