LM3677LE-1.2/NOPB National Semiconductor, LM3677LE-1.2/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM3677LE-1.2/NOPB
• Description: IC CONV DC/DC 600MA 1.2V 6-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LM3677LE-1.2/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.2V
• Current - Output: 600mA
• Frequency - Switching: 3MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-LLP
• Power - Output: 855mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3677LE-1.2

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LM3677TL-1.2 (Note 1)
LM3677TLX-1.2 (Note 1)
LM3677TL-1.3
LM3677TLX-1.3
LM3677TL-1.5
LM3677TLX-1.5
Connection Diagram and Package Mark Information
Pin Descriptions
Ordering Information
C1
C3
A1
A3
B2
Order Number
Pin #
5-Bump micro SMD Package
2, 5
1
6
3
4
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
Spec
Name
GND
SW
V
EN
FB
IN
FIGURE 3. 5 Bump Micro SMD Package
Description
Power supply input. Connect to the input filter capacitor (Figure 1).
Ground pin.
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.
Feedback analog input. Connect directly to the output filter capacitor ( FIGURE 1).
Switching node connection to the internal PFET switch and NFET synchronous
rectifier.
FIGURE 4. 6 Pin LLP Package
Package Marking
V
X
3
2
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
NS Package Number TLA05FEA
Supplied As
30008400
30008444