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参数资料
| 型号： | LM2742 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N沟道场效应管同步降压稳压控制器输出电压低 |
| 文件页数： | 14/22页 |
| 文件大小： | 619K |
| 代理商： | LM2742 |
TABLE 8. Bill of Materials for Circuit of Figure 7 (Continued)
ID
Part Number
Type
Size
Parameters
Qty.
Vendor
U2
LM78L05
Voltage
Regulator
SO-8
1
NSC
Q1/Q2
Si4826DY
Assymetric Dual
N-MOSFET
SO-8
30V, 24m
/ 8nC
Top 16.5m
/ 15nC
1
Vishay
D1
BAT-54
Schottky Diode
SOT-23
30V
1
Vishay
Lin
RLF7030T-1R0N64
Inductor
6.8x7.1x3.2mm
1H, 6.4A, 7.3m
1
TDK
L1
SLF12565T-4R2N5R5
Inductor
12.5x12.5x6.5mm
4.2H, 5.5A, 15m
1
TDK
Cin1
16MV680WG
Al-E
D: 10mm L:
12.5mm
680F 16V 3.4Arms
1
Sanyo
Cinx
C3216X5R1C106M
MLCC
1210
10F 16V 3.4Arms
1
TDK
Co1 Co2
16MV680WG
MLCC
1812
15F 25V 3.3Arms
1
Sanyo
Cox
C3216X5R10J06M
MLCC
1206
10F 6.3V 2.7A
TDK
Cboot
VJ1206X104XXA
Capacitor
1206
0.1F, 25V
1
Vishay
Cin
C3216X7R1E225K
Capacitor
1206
2.2F, 25V
1
TDK
Css
VJ1206X123KXX
Capacitor
1206
12nF, 25V
1
Vishay
Cc1
VJ1206A8R2KXX
Capacitor
1206
8.2pF 10%
1
Vishay
Cc2
VJ1206X102KXX
Capacitor
1206
1nF 10%
1
Vishay
Cc3
VJ1206X472KXX
Capacitor
1206
4.7nF 10%
1
Vishay
Rfadj
CRCW12063252F
Resistor
1206
32.5k
1%
1
Vishay
Rc1
CRCW12065232F
Resistor
1206
52.3k
1%
1
Vishay
Rc2
CRCW120662371F
Resistor
1206
2.37
1%
1
Vishay
Rfb1
CRCW12062211F
Resistor
1206
2.21k
1%
1
Vishay
Rfb2
CRCW12061002F
Resistor
1206
10k
1%
1
Vishay
Rcs
CRCW1206202J
Resistor
1206
2k
5%
1
Vishay
TABLE 9. Bill of Materials for Circuit of Figure 8
ID
Part Number
Type
Size
Parameters
Qty.
Vendor
U1
LM2742
Synchronous
Controller
TSSOP-14
1
NSC
Q1
Si4894DY
N-MOSFET
SO-8
30V, 15m
, 11.5nC
1
Vishay
D2
MBRS330T3
Schottky Diode
SO-8
30V, 3A
1
ON
L1
SLF12565T-470M2R4
Inductor
12.5x12.8x 4.7mm
47H, 2.7A 53m
1
TDK
D1
MBR0520
Schottky Diode
1812
20V 0.5A
1
ON
Cin1
16MV680WG
Al-E
1206
680F, 16V, 1.54Arms
1
Sanyo
Cinx
C3216X5R1C106M
MLCC
1206
10F, 16V, 3.4Arms
1
TDK
Co1, Co2
16MV680WG
Al-E
D: 10mm L:
12.5mm
680F 16V 26m
2
Sanyo
Cox
C3216X5R10J06M
MLCC
1206
10F, 6.3V 2.7A
1
TDK
Cboot
VJ1206X104XXA
Capacitor
1206
0.1F, 25V
1
Vishay
Cin
C3216X7R1E225K
Capacitor
1206
2.2F, 25V
1
TDK
Css
VJ1206X123KXX
Capacitor
1206
12nF, 25V
1
Vishay
Cc1
VJ1206A561KXX
Capacitor
1206
56pF 10%
1
Vishay
Cc2
VJ1206X392KXX
Capacitor
1206
3.9nF 10%
1
Vishay
Cc3
VJ1206X223KXX
Capacitor
1206
22nF 10%
1
Vishay
Rfadj
CRCW12062673F
Resistor
1206
267k
1%
1
Vishay
Rc1
CRCW12066192F
Resistor
1206
61.9k
1%
1
Vishay
Rc2
CRCW12067503F
Resistor
1206
750k
1%
1
Vishay
Rfb1
CRCW12061371F
Resistor
1206
1.37k
1%
1
Vishay
Rfb2
CRCW12061002F
Resistor
1206
10k
1%
1
Vishay
Rcs
CRCW1206122F
Resistor
1206
1.2k
5%
1
Vishay
LM2742
www.national.com
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