Summary description

STHS237x

10/20

Figure 6.

STHS237xL block diagram

1.

STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of

the internal UVLO divider. For all other devices, pin 7 is NC (No Connect).

2.5V

PG Comparator

UVLO

Comp.

Current

Mirror

Current

Limit Amp.

Classification

Comparator

Detection

Comparator

SQ

R

+

–

+

–

+

–

EN

1:1

1

0

1 = Limiting

0 = Inrush

0 = Fault

VSS

RTN

DET

AI12246a

PG

8

7

1

4

3

2

6

5

22V

VDD

ILIM

UVLO

(1)

CLASS

1.5V

& 10V

Delay

150µs

2.5V

Thermal Shutdown,

Counter, and Latch

R

Q

S

10V

Regulator

+

–

+

–

+

–

12V

0.1

Ω

Normal Oper.

Ref.