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參數(shù)資料
| 型號： | SMT4504F-172 |
| 英文描述： | Four-Channel Loss-Less TrakkerTM Power Supply Manager |
| 中文描述： | 四通道無損耗TrakkerTM電源管理器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 248K |
| 代理商： | SMT4504F-172 |
SMT4504
Preliminary Information
1
(See Last Page)
Summit Microelectronics, Inc
2071 1.1 01/07/05
1
VM
B
VCTRL
A
VM
A
SMT4504
DSP/
μ
P/
NPU/
FPGA/
ASIC
GND
GND
2.5VIN
1.2VIN
SDA
SCL
I2C
BUS
I
IRQ#
V
V
5V
5V
G
VCTRL
B
PUP
A
Monolithic
Controller
VIN
DC-DC
Converter
VIN
12V
PWR_ON#
PWR_ON
PUP
B
VDD_CAP
ON/OFF
TRIM
V+
V-
-E/A
V+
V-
Soft-Start
Figure 1 – Applications Schematic, the SMT4504 Loss-Less Trakker
TM
can track different types of supplies
together.
Note: This is an applications example only. Some pins, components and values are not shown.
FEATURES & APPLICATIONS
Loss-Less Tracking function
-
No power MOSFET switches
Programmable Slew-Rate, Tracking and Voltage
Monitoring Functions
Directly Interfaces to DC-DC Converters,
Monolithic Controllers or LDOs
Programmable Sequence Orders
Programmable Tracking Slew Rates
Eliminates Series Power MOSFETs
Programmable OV/UV Threshold Limits
Under Voltage Lock-Out (VDD and VCTRL_SUP)
4k-Bit user configurable Nonvolatile Memory
I
2
C 2-wire serial bus for programming
configuration and monitoring status
Applications
Monitor, Sequence and Slew-Rate Control of
Distributed Power and Point of Use Power
Supplies
Multi-voltage Processors, DSPs, ASICs used in
Telecom, CompactPCI or server systems
INTRODUCTION
The SMT4504 is an intelligent power supply
sequencer, tracker, and voltage monitor. The
SMT4504 tracks or sequences up to 4 power supplies
by uniquely controlling the Enable and TRIM (Soft-
Start) functions of DC-DC converters, Monolithic
Controllers or LDOs. Each Channel is individually
programmable for undervoltage/overvoltage threshold
settings, sequence position and slew rates. Two or
more supplies allocated to the same sequence
position are tracked, while assigning individual
supplies to a unique sequence position causes them
to be sequenced with controlled slew rates.
The SMT4504 monitors the supplies for faults and
is programmable to take any of several actions upon
the occurrence of a fault. The voltage monitoring
threshold step size is better than
±
1%.
Power supply sequencing can be executed in any
order. During power-off sequencing, the SMT4504
sequences the supplies in the reverse order as power-
on.
Using the I
2
C interface, a host system can
communicate with the SMT4504 status register,
optionally control power-on/off software and utilize 4K-
bits of nonvolatile memory.
Four-Channel Loss-Less Trakker
TM
Power Supply Manager
SIMPLIFIED APPLICATIONS DRAWING
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SMT45A-102 | 功能描述:固定電感器 RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| SMT45A-102LF | 功能描述:固定電感器 RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| SMT45A-103 | 功能描述:固定電感器 RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| SMT45A-103LF | 功能描述:固定電感器 RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| SMT45A-121 | 功能描述:固定電感器 RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
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