SFTB NSC [National Semiconductor], SFTB Datasheet - Page 15

• Manufacturer Part Number: SFTB
• Description: Thin SOT23 1A Load Step-Down DC-DC Regulator
• Manufacturer: NSC [National Semiconductor]

LM2734Z Design Examples
Part ID
U1
C1, Input Cap
C2, Output Cap
C3, Boost Cap
C4, Shunt Cap
D1, Catch Diode
D2, Boost Diode
D3, Zener Diode
L1
R1
R2
R3
R4
Part Value
1A Buck Regulator
10µF, 25V, X7R
22µF, 6.3V, X5R
0.01µF, 16V, X7R
0.1µF, 6.3V, X5R
0.4V
1V
5.1V 250Mw SOT-23
3.3µH, 1.3A
8.87kΩ, 1%
10.2kΩ, 1%
100kΩ, 1%
4.12kΩ, 1%
F
F
@
Schottky 1A, 30VR
50mA Diode
FIGURE 10. V
Bill of Materials for Figure 10
(Continued)
18V to 1.5V/1A
BOOST
15
Derived from V
Part Number
LM2734ZX
C3225X7R1E106M
C3216X5ROJ226M
C1005X7R1C103K
C1005X5R0J104K
SS1P3L
1N4148W
BZX84C5V1
ME3220–332MX
CRCW06038871F
CRCW06031022F
CRCW06031003F
CRCW06034121F
SHUNT
Manufacturer
National Semiconductor
TDK
TDK
TDK
TDK
Vishay
Diodes, Inc.
Vishay
Coilcraft
Vishay
Vishay
Vishay
Vishay
20130344
www.national.com