参数资料
型号: FAN2108EMPX
厂商: Fairchild Semiconductor
文件页数: 8/14页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 8A 25MLP
标准包装: 1
系列: TinyBuck™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.8 V ~ 19 V
输入电压: 3 V ~ 24 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 600kHz
电流 - 输出: 8A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 25-MLP
包装: 标准包装
供应商设备封装: 25-MLP(5x6)
其它名称: FAN2108EMPXDKR
FAN2108EMPXDKR-ND
FAN2108EMPXFSDKR
Application Circuit
+5V
VCC
15
P2
VIN
8-20 V IN
1.0u
X5R
10K
PGOOD
13
200K
3.3n
3 x 4.7u
V OUT
NC 24
25
RAMP
X7R
62
2.49K
2.49K
COMP
20
4.7n
56p
FB
19
1
BOOT
* Inter-Technical
SC7232-2R2M
4.7n
ILIM
17
0.1u
200K
EN
14
P1
SW
2.2u *
V OUT
R(T)
18
1.5
2.00K
30.1K
4 x 22u
3.3n
AGND
16
P3 PGND
390p
X5R
Figure 10. Application Circuit: 1.8 V OUT , 500 KHz
Typical Performance Characteristics
Typical operating characteristics using the circuit shown in Figure 10. V IN =12 V, V CC =5 V, unless otherwise specified.
Efficiency @ Vo=1.8V, fsw=500KHz, Ta=25 C
Efficiency @ Vo=3.3V, fsw=300KHz, Ta=25 C
95
90
85
0
100
95
90
0
80
75
Vin=8V
Vin=12V
Vin=16V
Vin=20V
Vin=24V
85
80
75
Vin=5V
Vin=10V
Vin=12V
Vin=14V
Vin=20V
70
0
2
4
Load Current (A)
6
8
70
0
2
4
Load Current (A)
6
8
Figure 11.
1.8 V OUT Efficiency Over V IN vs. Load
Figure 12. 3.3 V OUT Efficiency Over V IN vs. Load
Efficiency@ Vin=12V, Vo=1.8V
Load Regulation @ Vo=0.8V, 500kHz, 25°C
95
90
85
0.8012
0.801
0.8008
0.8006
0.8004
Vin=8V
Vin=12V
Vin=16V
Vin=20V
Vin=24V
80
75
70
300KHz
500KHz
600KHz
0.8002
0.8
0.7998
0.7996
0.7994
0
1
2
3
4
5
6
7
8
0.7992
0
1
2
3
4
5
6
7
8
Load Current (A)
Figure 13. 1.8 V OUT Efficiency Over Frequency
vs. Load
Load Current (A)
Figure 14. 0.8 V OUT Load Regulation Over V IN
vs. Load
Typical Performance Characteristics (Continued)
? 2008 Fairchild Semiconductor Corporation
FAN2108 ? Rev. 1.0.2
8
www.fairchildsemi.com
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