参数资料
| 型号： | SP2996BEN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG BUS TERM 2A DDR 8NSOIC |
| 产品变化通告： | SP2996B Obsolescence 28/Sept/2011 |
| 标准包装： | 1 |
| 应用： | 转换器，DDR，DDR2 |
| 输入电压： | 1.6 V ~ 6 V |
| 输出数： | 1 |
| 输出电压： | 可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 标准包装 |
| 其它名称： | 1016-1582-6 |
S P 2 9 9 6 B
2 A m p D D R B u s T e r m i n a t i o n R e g u l a t o r
APPLICATION INFORMATION
I NTERNAL P ARASITIC D IODE
Avoid forward-biasing the internal parasitic
diode, V OUT to V CNTL , and V OUT to V IN . Positive
voltage should not be applied to the output if
V IN and V CNTL are not present.
C ONSIDERATIONS FOR D ESIGNING ,
R ESISTANCE OF V OLTAGE D IVIDER
When the reference voltage is programmed
below 0.2V the pulldown capability of the
internal NMOS transistor is limited. It is
recommened to place a filter capacitor from
V REF to ground in order to reduce sensitivity to
TEST CIRCUITS
Testing Output Voltage Tolerance ? V LOAD
Testing Current in Shutdown Mode I SHDN
noise and improve power up characteristics
(soft start).
L AYOUT C ONSIDERATIONS
The SP2996B is offered in the NSOIC-8
package, resulting in attention needing to be
paid to dissipating heat effectively when it
operates in high current. In order to prevent
maximum junction temperature from being
exceeded, suitable copper area is necessary.
The large copper area at VCNTL pins is
available, and by taking advantage of this,
much heat dissipation is attained. Use vias to
direct heat into the bottom layer as the layout
examples show below. All capacitors should be
placed as close as possible to relative pins.
? 2010 Exar Corporation
6/9
Rev. 2.0.0
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