参数资料
型号: ADM1088AKS-REEL7
厂商: Analog Devices Inc
文件页数: 11/16页
文件大小: 0K
描述: IC SIMPLE SEQUENCER P-P SC70-6
标准包装: 1
系列: Simple Sequencers®
类型: 序列发生器
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 低有效
复位超时: 可调节/可选择
电压 - 阀值: 可调节/可选择
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-TSSOP,SC-88,SOT-363
供应商设备封装: SC-70-6
包装: 剪切带 (CT)
其它名称: ADM1088AKSREEL7CT

ADM1085/ADM1086/ADM1087/ADM1088
APPLICATION INFORMATION
SEQUENCING CIRCUITS
The ADM1085/ADM1086/ADM1087/ADM1088 are
compatible with voltage regulators and dc-to-dc converters that
have active high or active low enable or shutdown inputs, with a
choice of open-drain or push-pull output stages. Figure 23 to
Figure 25 illustrate how each of the ADM1085/ADM1086/
ADM1087/ADM1088 simple sequencers can be used in
multiple-supply systems, depending on which regulators are
used and which output stage is preferred.
In Figure 23, three ADM1085s are used to sequence four
supplies on power-up. Separate capacitors on the CEXT pins
determine the time delays between enabling of the 3.3 V, 2.5 V,
1.8 V, and 1.2 V supplies. Because the dc-to-dc converters and
ADM1085s are connected in a cascade, and the output of any
converter is dependent on that of the previous one, an external
controller can disable all four supplies simultaneously by
disabling the first dc-to-dc converter in the chain.
For power-down sequencing, an external controller dictates
when the supplies are switched off by accessing the ENIN
inputs individually.
12V
3.3V
3.3V
3.3V
EN
IN
DC/DC
OUT
3.3V
EN
IN
DC/DC
OUT
2.5V
EN
IN
DC/DC
OUT
1.8V
EN
IN
DC/DC
OUT
1.2V
3.3V
3.3V
3.3V
ENABLE
CONTROL
V IN
V CC
ENOUT
V IN
V CC
ENOUT
V IN
V CC
ENOUT
ADM1085
ADM1085
ADM1085
ENIN
CEXT
ENIN
CEXT
ENIN
CEXT
12V
3.3V
2.5V
1.8V
1.2V
t EN1
t EN2
t EN3
EXTERNAL
DISABLE
Figure 23. Typical ADM1085 Application Circuit
Rev. A | Page 11 of 16
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