参数资料
型号: BD8963EFJ-E2
厂商: Rohm Semiconductor
文件页数: 15/23页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 3A 8HTSOP
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1 V ~ 2.5 V
输入电压: 2.7 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 1MHz
电流 - 输出: 3A
同步整流器:
工作温度: -25°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 标准包装
供应商设备封装: 8-HTSOP-J
其它名称: BD8963EFJ-E2DKR
BD8963EFJ
5. Determination of output voltage
Datasheet
The output voltage V OUT is determined by the equation (6):
V OUT =(R2/R1+1) × V ADJ ??? (6) V ADJ : Voltage at ADJ terminal (0.8V Typ.)
With R1 and R2 adjusted, the output voltage may be determined as required.
5
6
SW
L
Co
R2
Output
Adjustable output voltage range : 1.0V to 2.5V
8
ADJ
R1
Fig.32 Determination of output voltage
Use 1 k? to 100 k? resistor for R1.
carefully for ripple voltage etc.
If a resistor of the resistance higher than 100 k? is used, check the assembled set
The lower limit of input voltage depends on the output voltage.
Basically, it is recommended to use in the condition :
V CCmin = V OUT +2.25V.
Fig.33. shows the necessary output current value at the lower limit of
input voltage. (DCR of inductor : 0.05 Ω )
This data is the characteristic value, so it’ doesn’t guarantee the
operation range,
4.7
4.2
Vo=2.5V
3.7
3.2
2.7
Vo=2.0V
Vo=1.8V
Vo=1.5V
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT : IOUT[A]
Fig.33 minimum input voltage in each output voltage
www.rohm.com
?2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
15/21
TSZ02201-0J3J0AJ00040-1-2
02.MAR.2012 Rev.001
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