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参数资料
| 型号： | MC34653EFR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 12/24页 |
| 文件大小： | 1649K |
| 描述： | IC CTRLR HOT SWAP NEG V 8-SOIC |
| 标准包装： | 2,500 |
| 类型： | 热交换开关 |
| 应用： | 通用 |
| 内部开关： | 是 |
| 电流限制： | 1A |
| 电源电压： | 36 V ~ 80 V |
| 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： | 带卷 (TR) |
Analog Integrated Circuit Device Data
12
Freescale Semiconductor
34653
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
rchived by Freescale Semiconductor, Inc., 2008
Figure 9. Overcurrent Mode for More Than 3.0 ms
Figure 10. Overcurrent Mode for Less Than 3.0 ms
DISABLING AND ENABLING THE 34653
When a negative voltage (< 1.8 V below V
PWR
) is applied
to the DISABLE pin for more than 1.0 ms (Point A in
Figure 11
), the 34653 is disabled, the Power MOSFET turns
off, and the power good output signals deactivate. The 34653
stays in this state until the voltage on the DISABLE pin is
brought to within ?1.2 V of V
PWR
for more than 1.0 ms to
enable the device (Point B in Figure 11
). Then a new start-up
sequence initiates as described on page
10
. Applying a
positive voltage (> 1.8 V above V
PWR
) would also disable the
34653 in the same manner.
Figure 11. Disabling and Enabling the 34653
Figure 12
demonstrates that the 34653 must be enabled
for the length of the start-up timer to start turning on the
Power MOSFET. After the fourth disable signal, the 34653
was enabled for the length of the start-up timer. And because
the retry counter is less than 10, the 34653 turns on the
Power MOSFET and starts the charging process (refer to
Charging Process
, pages 1011).
Figure 12. Start-Up Timer Versus Disable
BOARD REMOVAL
When the board is removed, its power ramps down. As
soon as the 34653s input voltage reaches the undervoltage
turn-off threshold, the undervoltage detection circuit activates
and the Power MOSFET turns off for having violated one of
the start-up conditions (list on page
10
).
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| MC34655 | 制造商:SPC Multicomp 功能描述:HEADER SQUARE PIN 2.54MM 5WAY 制造商:SPC Multicomp 功能描述:HEADER, SQUARE PIN, 2.54MM, 5WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR HEADER 5POS, 2.54MM; Connector Type:Wire to Board; Series:2217; Contact Termination:Through Hole Vertical; Gender:Header; No. of Contacts:5; No. of Rows:1; Pitch Spacing:2.54mm; Contact Plating:Tin ;RoHS Compliant: Yes |
| MC34657 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 2WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 2WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 2POS, 4.2MM; Series:2266(5566)S; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:2; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34659 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 4WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 4WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 4POS, 4.2MM; Series:2266(5566)S; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:4; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34661 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 6WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 6WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 6POS, 4.2MM; Series:2266(5566)S; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:6; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34663 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 8WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 8WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 8POS, 4.2MM; Series:2266(5566)S; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:8; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
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