Obsolete

Product(s)

- Obsolete

Product(s)

STHS4257A, STHS4257A1, STHS4257L, STHS4257L1

Summary description

9/18

Figure 5.

Block diagram (STHS4257A/L)

Figure 6.

Typical application circuit (STHS4257A/L) with a DC/DC converter

RS

ref

25k

Signature

Resistor

Power Good

Input

Current

Limit

Classification

Current Source

Control

Circuits

+

–

+

–

EN

EN

VIN

GND

AI12206c

PWRGD

1

2

3

4

8

7

6

5

ref

NC

NC

RCLASS

NC

VOUT

Power

MOSFET

100

k

Ω

5µF

(min)

100V

0.1µF

100V

SMAJ58A

RCLASS

VIN

48V from

power sourcing

equipment (PSE)

AI12207a

RCLASS

SHDN

~

~

+

+

+

3V

to logic

–

STHS4257A/L

Powered Device (PD)

Switching

Power

Supply

Diode

Bridge

VIN

DF01S

GND

VOUT

RTN

PWRGD

C1

C2

–