LM2524D, LM3524D

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SNVS766E – JUNE 2009 – REVISED MAY 2013

Resistor R3 sets the current limit to:

(15)

Figure 26 and Figure 27 show a PC board layout and stuffing diagram for the 5V, 1A regulator of Figure 25. The

regulator's performance is listed in Table 1.

*Mounted to Staver Heatsink No. V5-1.

Q1 = BD344

Q2 = 2N5023

L1 = >40 turns No. 22 wire on Ferroxcube No. K300502 Torroid core.

Figure 25. 5V, 1 Amp Step-Down Switching Regulator

Table 1.

Parameter

Conditions

Typical Characteristics

Output Voltage

5V

Switching Frequency

20 kHz

Short Circuit Current Limit

1.3A

Load Regulation

3 mV

Line Regulation

6 mV

Efficiency

80%

Output Ripple

10 mVp-p

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Product Folder Links: LM2524D LM3524D