Data Sheet G13567EJ3V0DS00

10

µµµµ PC1934

2.

CONFIGURATION AND OPERATION OF EACH BLOCK

Figure 2-1 Block Diagram

2.1

Reference Voltage Generator

The reference voltage generator is comprised of a band-gap reference circuit, and outputs a temperature-compensated

reference voltage (2.1 V). The reference voltage can be used as the power supply for internal circuits, or as a reference

2.2

Oscillator

Also, the oscillator outputs the

the non-inverted input pins of the two PWM comparators to determine the oscillation frequency.

8

10

Error amplifier

Output

section

PWM

comparator

SCP

comparator

7

Error amplifier

Output

section

PWM

comparator

1

2

Oscillation

section

SQ

Q

GND

DLY

15

0.63 V

9

11

12

13

6

5

4

16

Reference

voltage

section

Under voltage

lock-out

section

3

14

Timer latch for

short-circuit

protection section