LM2735SD3.3EVAL National Semiconductor, LM2735SD3.3EVAL Datasheet - Page 2

• Manufacturer Part Number: LM2735SD3.3EVAL
• Description: BOARD EVALUATION FOR LM2735
• Manufacturer: National Semiconductor

Specifications of LM2735SD3.3EVAL

• Main Purpose: DC/DC, Step Up
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 500mA
• Voltage - Input: 3 ~ 5.5V
• Regulator Topology: Boost
• Frequency - Switching: 1.6MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2735
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

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Pin Description for 6-Pin LLP
Bill of Materials LM2735X
DAP
D1, Catch Diode
Pin
C3 Output Cap
C4 Output Cap
C5 Comp Cap
1
2
3
4
5
6
C1 Input Cap
C2 Input Cap
Part ID
U1
C6
R1
R2
R3
L1
L2
PGND
AGND
Name
GND
VIN
SW
EN
FB
0.4V
2.1A Boost Regulator
22µF, 6.3V, X5R
10µF, 25V, X5R
f
Schottky 1A, 20VR
10.2kΩ, 1%
16.5kΩ, 1%
100kΩ, 1%
Part Value
2.2µF 16V
6.2µH 3A
6.2µH 3A
No Load
No Load
2200pF
Function
Power ground pin. Place PGND and output capacitor GND close together.
Supply voltage for power stage, and Input supply voltage.
Shutdown control input. Logic high enables operation. Do not allow this pin to
float or be greater than VIN + 0.3V.
Feedback pin. Connect FB to external resistor divider to set output voltage.
Signal ground pin. Place the bottom resistor of the feedback network as close
as possible to pin 5
Output switch. Connect to the inductor, output diode.
Signal & Power ground. Connect to pin 1 & pin 5 on top layer. Place 4-6 via’s
from DAP to bottom layer GND plane.
Top View
Pin-Out
2
30025702
Manufacturer
Coilcraft
Coilcraft
Vishay
Vishay
Vishay
NSC
TDK
TDK
TDK
TDK
ST
C3216X5R1E106M
C2012X5R0J226M
C1608X5R1H222K
C2012X5R1C225K
CRCW06031002F
CRCW06031652F
CRCW06031003F
MSS7341-622
MSS7341-622
Part Number
LM2735XSD
STPS120M