LM3676SD-ADJEV National Semiconductor, LM3676SD-ADJEV Datasheet - Page 3

• Manufacturer Part Number: LM3676SD-ADJEV
• Description: BOARD EVALUATION LM3676SD-ADJ
• Manufacturer: National Semiconductor

Specifications of LM3676SD-ADJEV

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1 ~ 3.3V
• Current - Output: 600mA
• Voltage - Input: 2.9 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM3676
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Not Compliant

Connection Diagram and Package Mark Information
Pin Descriptions (8-lead Non-Pullback LLP Package)
Pin #
1
2
3
4
5
6
7
8
PGND
MODE
SGND
Name
VIN
SW
EN
NC
FB
Description
Power supply input.
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
Mode Control Pin:
> 1.0V selects continous PWM mode ;
< 0.4V selects Auto (PFM-PWM) mode. Do not leave this pin floating.
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage
versions. For adjustable version external resistor dividers are required (Figure 2). The
internal resistor dividers are disabled for the adjustable version.
Enable pin. The device is in shutdown mode when voltage to this pin is <0.4V and enabled
when >1.0V. Do not leave this pin floating.
Not Connected. Keep Pin floating
Signal Ground Pin.
Power Supply input. Connect to the input filter capacitor (Figure 1).
FIGURE 3. LLP, Top View
3
20212703
www.national.com