参数资料
型号: SMS64FR06
厂商: Summit Microelectronics, Inc.
英文描述: Six-Channel Supply Monitor and Sequencing Controller
中文描述: 6通道电源监视器和排序控制器
文件页数: 16/24页
文件大小: 647K
代理商: SMS64FR06
SMS64
APPLICATIONS INFORMATION (CONTINUED)
Preliminary
Summit Microelectronics, Inc
2060 2.22 10/09/03
16
Applications Example
A simple application example is shown in Figure 8.
Three voltages are provided by a motherboard, +5V,
+3.3V, and +1.8V. The +5V and +3.3V supplies are
switched on through series MOSFETS and applied to
the application circuit. The +1.8V supply will drive an
LDO, supplying +1.2V to the application circuit.
The
application requires that the power supplies sequence
in the following order: +1.2V, +3.3V, +5.0V. As these
supplies are sequenced on, RST_A# is cleared after
the +1.2V supply has reached its under-voltage
threshold. RST_B# is not cleared until the +3.3V and
+5.0V supplies have reached their under-voltage
threshold. After the supplies have sequenced on, a
10% under-voltage on the +1.2V supply will trigger
RSTA#. Similarly, a 10% under-voltage on the +3.3V
supply will trigger RSTB#. The devices driven by the
application circuit require that if a 10% under-voltage
occurs on the +5.0V supply, the SMS64 will generate
an IRQ#. A 10% over-voltage on any supply will
trigger both RSTA# and RSTB#. This application also
requires that the power supplies are sequenced off in
the reverse order that they were sequenced on. The
power supply sequencing is controlled by toggling the
PWR_ON/OFF pin. With these requirements, the
SMS64 is configured as follows:
Channel A
Sequenced; Sequence Position 2; Power-On
Delay(t
DPONA
) = 50ms; Power-Off Delay(t
DPOFFA
) =
50ms;
Under-voltage; Programmable Threshold(V
PTHA
) =
4.50V
Channel B
Sequenced; Sequence Position 1; Power-On
Delay(t
DPONB
) = 25ms; Power-Off Delay(t
DPOFFB
) =
25ms;
Under-voltage; Programmable Threshold(V
PTHB
) =
2.96V
Channel C
Sequenced; Sequence Position 0; Power-On
Delay(t
DPONC
) = 50ms; Power-Off Delay(t
DPOFFC
) =
100ms;
Under-voltage; Programmable Threshold(V
PTHC
) =
1.06V
Channel D
Not Sequenced; Sequence Position null (7);
Over-voltage; Programmable Threshold(V
PTHD
) =
5.50V
+5.0V
SMS64
+3.3V
V
A
P
A
V
A
VM
C
V
D
V
B
P
B
V
B
V
E
VM
F
P
C
V
C
IRQ#
RSTA#
RSTB#
GND
V+
OUT
SET
ON/OFF
+1.8V
+1.2V
+5.0V
+3.3V
Figure 8 – Simple Applications Example
相关PDF资料
PDF描述
SMS64FR07 Six-Channel Supply Monitor and Sequencing Controller
SMS64FR08 Six-Channel Supply Monitor and Sequencing Controller
SMS66 Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0C Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0D Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
相关代理商/技术参数
参数描述
SMS64FR07 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Supply Monitor and Sequencing Controller
SMS64FR08 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Supply Monitor and Sequencing Controller
SMS66 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0C 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0D 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller