MC33341PG Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

MC33341PG

Power Supply Battery Charger Regulation Control Circuit

ON Semiconductor 

Source

MC33341

RS

Load

R3

R2

Opto

Isolator

Current

Control

Source

Return

8

7

6

5

VCC

VCC

VCC

VCC

1.2 V Differential Amp

Disable Logic 0.4 V

1.2 V

VCC

Differential Amp

R

R

RR

R

R

VCC

VCC

Inverting Amp

Vsen

Transconductance

Vth

V

Amp

Isen

Ith

I

VCC

Reference

0.2 V 0.4 V 1.2 V

VCC

0.2 V

1

2

3

4

Comp

R1

Battery or

Resistive

Load

Load

The above figure shows the MC33341 configured for source high−side current sensing with an externally adjustable current threshold.

Operation of this circuit is similar to that of Figure 14. The current regulation threshold can be adjusted over a range of 0 V to 200 mV with

respect to Pin 4.

ǒ Ǔ Vreg + Vth(V)

R2

R1

)

1

ǒ Ǔ + 1.2

R2

R1

)

1

Ireg

+

Vth(Pin

RS

2)

ǒ Ǔ Ipk RS – 0.6

R3 +

0.02

Figure 15. Source High−Side Current Sensing with

Externally Adjustable Current and Internally Fixed Voltage Thresholds

http://onsemi.com

8

Share Link: