參數(shù)資料
型號(hào)： SMH4804
廠商： Summit Microelectronics, Inc.
英文描述： -48V Programmable Hot Swap Sequencing Power Controller
中文描述： - 48V的可編程序熱插拔電源控制器
文件頁(yè)數(shù)： 12/41頁(yè)
文件大小： 574K
代理商： SMH4804
Pin Descriptions
SMH4804
12
2050 3.7 10/30/02
Summit Microelectronics
20
28
O
2.5VREF
This is a precision 2.5V output reference voltage that
may be used to expand the logic input functions on the
SMH4804. The output reference voltage is with
respect to V
SS
.
21
29
I
ENPGC
The active-high ENPGC input controls the PG4#
output. When ENPGC is low, the PG4# output is
immediately placed in a high-impedance state. When
ENPGC is high, or left floating, PG4# is driven low at
a time period of t
PGD
after PG3# is asserted. This pin
has an internal 50k
pull-up to 5V.
22
30
I
ENPGB
The active-high ENPGB input controls the PG3# and
PG4# outputs. When ENPGB is low, the PG3#, and
PG4# outputs are immediately placed in a high-
impedance state. When ENPGB is high, or left
floating, PG3# is driven low at a time period of tPGD
after PG2# is asserted. This pin has an internal 50k
pull-up to 5V.
23
32
I
ENPGA
The active-high ENPGA input controls the PG2#,
PG3#, and PG4# outputs. When ENPGA is low, the
PG2#, PG3#, and PG4# outputs are immediately
placed in a high-impedance state. When ENPGA is
high, or left floating, PG2# is driven low at a time
period of tPGD after PG1# is asserted. This pin has an
internal 50k
pull-up to 5V.
24
34
O
PG3#
The PG3# output is an open-drain, active low signal
with no internal pull-up resistor. This pin can be used
to switch a load or enable a DC/DC converter. PG1#
is enabled immediately after VGATE reaches V
DD
-
V
GT
and the DRAIN SENSE voltage is less than 2.5V.
Each successive PGn# output (PG2#
→
PG3#
→
PG4#) is enabled t
PGD
after its predecessor, provided
that the ENPGx inputs are high. The voltage on this
pin cannot exceed 12V relative to V
SS
. ENPGx refers
to the ENPGA, ENPGB, and ENPGC inputs.
25
36
O
PG1#
The PG1# output is an open-drain, active low signal
with no internal pull-up resistor. This pin can be used
to switch a load or enable a DC/DC converter. PG1#
is enabled immediately after VGATE reaches V
DD
-
V
GT
and the DRAIN SENSE voltage is less than 2.5V.
Each successive PGn# output (PG2#
→
PG3#
→
PG4#) is enabled t
PGD
after its predecessor, provided
that the ENPGx inputs are high. The voltage on this
pin cannot exceed 12V relative to V
SS
. ENPGx refers
to the ENPGA, ENPGB, and ENPGC inputs.
Pin Number
(28-Pin SOIC)
Pin Number
(48-Pin TQFP)
Pin Type
(I/O)
Pin Name
Description
Table 1. SMH4804 Pin Descriptions (Continued)
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參數(shù)描述
SMH4804F 制造商:SUMMIT 功能描述:
SMH4811 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DISTRIBUTED POWER HOT SWAP CONTROLLER
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SMH4811A_09 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Programmable Distributed Power Hot-Swap Controller for High-Availability Systems
SMH4811AG 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DISTRIBUTED POWER HOT SWAP CONTROLLER
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