MC33064(2016) View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

MC33064
(Rev.:2016)

Undervoltage Sensing Circuit

ON Semiconductor 

MC34064, MC33064, NCV33064

+

Power

Supply

-

Input

-

+

1.2Vref

GND

1.0k

Reset

+

-

Input

-

+

1.2Vref

GND

Reset

Solar

Cells

Figure 11. Voltage Monitor

Figure 12. Solar Powered Battery Charger

Vin = 11.5

to 14.5V

+

470

22

+

4.7k

25mH

MPSW51A

470 +

1N5819

680

1.2k

VO = 5.0 V

IO = 50 mA

330

Input

-

+

1.2Vref

1N756

Reset

Test

Line Regulation

Load Regulation

Output Ripple

Efficiency

Conditions

Vin = 11.5 V to 14.5 V, IO = 50 mA

Vin = 12.6 V, IO = 0 mA to 50 mA

Vin = 12.6 V, IO = 50 mA

Vin = 12.6 V, IO = 50 mA

Results

35 mV

12 mV

60 mVpp

77%

GND

Figure 13. Low Power Switching Regulator

VCC

RL

MTP3055EL

270

4.6V

Input

-

+

1.2Vref

Reset

GND

Overheating of the logic level power MOSFET due to insufficient gate voltage can be prevented with the above

circuit. When the input signal is below the 4.6 V threshold of the MC34064, its output grounds the gate of the L2

MOSFET.

Figure 14. MOSFET Low Voltage Gate Drive Protection

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