200

400

600

800

1000

LOAD CURRENT (mA)

80

60

40

20

0

100

VIN = 6V

12V

60V

0

6

20

40

60

VIN (V)

250

200

150

100

50

Load Curent = 500 mA

20

LM5010A, LM5010A-Q1

SNVS376F – OCTOBER 2005 – REVISED MAY 2016

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Product Folder Links: LM5010A LM5010A-Q1

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Copyright © 2005–2016, Texas Instruments Incorporated

8.2.3 Application Curves

Figure 16. Efficiency vs Load Current and VIN

Figure 17. Frequency vs VIN

8.3 Do's and Don'ts

A minimum load current of 500 µA is required to maintain proper operation. If the load current falls below that

level, the bootstrap capacitor can discharge during the long OFF-time and the circuit either shuts down or cycles

ON and OFF at a low frequency. If the load current is expected to drop below 500 µA in the application, choose

the feedback resistors to be low enough in value to provide the minimum required current at nominal VOUT.