参数资料
型号: NCP3122MNTXG
厂商: ON Semiconductor
文件页数: 16/42页
文件大小: 0K
描述: IC REG BUCK ADJ 2A DL 32QFN
产品变化通告: NCP312x Soft Start Charge 6/Nov/2008
标准包装: 4,000
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 可调至 0.8V
输入电压: 4.5 V ~ 15 V
频率 - 开关: 200kHz ~ 2.2MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 32-QFN(5x5)
NCP3122
Table 2. Inductor Examples
L
[ m H]
33
22
15
10
8.2
6.8
5.6
5.4
5.2
4.7
3.9
3.8
3.3
2.2
Part Number
DO3316P ? 333
MSS1038 ? 333
74458133
PF0698.333NL
PF0560.333NL
DO3340P ? 223
MSS1038 ? 223
74456122
PG0015.223NL
PF0560.223NL
DO3316P ? 153
MSS1246T ? 153
74456115
PG0015.153NL
DS3316P ? 103
DO3308P ? 103
74477510
P0762.103NL
P1167.103NL
DS3316P ? 822
MSS6132 ? 822
744774068
74454068
MSS6132 ? 562
P1167.542NL
PA0390.472NL
7445404
DO3316T ? 392
PA0390.332NL
7445403
74453031
LPS4018 ? 332
DS3316P ? 332
7445302
7445402
LPS5030 ? 222
DO1813H ? 222
Shielded/
Non ? shielded
N
S
N
N
S
N
S
N
N
S
N
S
N
N
S
N
N
N
S
S
S
N
S
S
S
N
S
N
N
S
S
S
S
S
S
S
N
I rms
[A]
2.1
2.3
3.0
2.8
2.2
2.5
2.85
2.6
1.95
2.5
3.1
3.4
2.9
2.27
2
2.3
2.3
2
2
2.1
2.65
2.4
2.2
2.95
2.5
2.2
2.7
5.3
2.9
2.9
2.2
2
3.3
2.76
3.8
2.15
3.1
DCR max
[m W }
100
93
66
65
93
66
73
95
100
73
46
56
60
80
101
85
70
110
50
85
70
82
55
60
33
54.4
40
15
42.8
30
62
80
39
45
27
57
35
Manufacturer
Coilcraft
Coilcraft
WE
PULSE
PULSE
Coilcraft
Coilcraft
WE
PULSE
PULSE
Coilcraft
Coilcraft
WE
PULSE
Coilcraft
Coilcraft
WE
PULSE
PULSE
Coilcraft
Coilcraft
WE
WE
Coilcraft
PULSE
PULSE
WE
Coilcraft
PULSE
WE
WE
Coilcraft
Coilcraft
WE
WE
Coilcraft
Coilcraft
Web
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.pulseeng.com
www.pulseeng.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.pulseeng.com
www.pulseeng.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.pulseeng.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.pulseeng.com
www.pulseeng.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.we ? online.com
www.coilcraft.com
www.pulseeng.com
www.pulseeng.com
www.we ? online.com
www.coilcraft.com
www.pulseeng.com
www.we ? online.com
www.we ? online.com
www.coilcraft.com
www.coilcraft.com
www.we ? online.com
www.we ? online.com
www.coilcraft.com
www.coilcraft.com
Output Rectifier Diode
When the high ? side switch is on, energy is stored in the
magnetic field in the inductor. During off time, the internal
MOSFET switch is off. Since the current in the inductor has
to discharge, the current flows through the rectifying diode
efficiency. Another choice could be fast recovery or
ultra ? fast recovery diodes. It should be noted that some
types of these diodes with an abrupt turn ? off characteristic
may cause instability or EMI troubles.
to the output. A Schottky diode is recommended due to low
diode forward voltage and very short recovery times, which
positively impacts the step down voltage converter’s overall
http://onsemi.com
16
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