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

Voltage

Control

Opto

Isolator

Current

Control

Source

Return

MC33341

Load

R2

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

R3

Comp

RS

R1

Battery or

Resistive

Load

Load

The above figure shows the MC33341 configured for source return low−side current sensing with externally adjustable voltage and current

thresholds. Operation of this circuit is similar to that of Figure 16. The respective voltage and current regulation threshold can be adjusted

over a range of 0 to 1.6 V and 0 V to 200 mV with respect to Pin 4.

ǒ Ǔ Vreg + Vth(Pin 6)

R2

R1

)

1

Ireg

+

–

Vth(Pin

RS

2)

ǒ Ǔ Ipk RS – 0.6

R3 +

0.02

Figure 17. Source Return Low−Side Current Sensing with

Externally Adjustable Current and Voltage Thresholds

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