lm25117psqx National Semiconductor Corporation, lm25117psqx Datasheet - Page 4

• Manufacturer Part Number: lm25117psqx
• Description: Wide Input Range Synchronous Buck Controller With Analog Current Monitor
• Manufacturer: National Semiconductor Corporation

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TSSOP
Pin
EP
18
19
20
LLP
Pin
EP
19
20
22
17
21
23
6
Name
VIN
HO
HB
NC
NC
NC
NC
EP
Description
High-side NMOS gate drive output. Connect to the gate of the high-side NMOS transistor through a
short, low inductance path.
High-side driver supply for the bootstrap gate drive. Connect to the cathode of the external bootstrap
diode and to the bootstrap capacitor. The bootstrap capacitor supplies current to charge the high-side
NMOS gate and should be placed as close to controller as possible.
Supply voltage input source for the VCC regulator.
Exposed pad of the package. Electrically isolated. Should be soldered to the ground plane to reduce
thermal resistance.
No electrical contact.
No electrical contact.
No electrical contact.
No electrical contact.
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