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參數資料
| 型號： | LTC2927CDDB#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 264K |
| 代理商： | LTC2927CDDB#TRM |
LTC2927
1
2927fb
RAMP
(3.3V)
2.5V
1.8V
1V/DIV
2927 TA01b
10ms/DIV
RAMP
(3.3V)
2.5V
1.8V
1V/DIV
2927 TA01c
10ms/DIV
Single Power Supply
Tracking Controller
The LTC2927 provides a simple solution to power supply
tracking and sequencing requirements. By selecting a few
resistors, the supply can be congured to ramp-up and
ramp-down with differing ramp rates, voltage offsets, or
time delays relative to other supplies or a master signal.
By forcing current into a feedback node of an independent
supply, the LTC2927 causes the output to track a ramp
signal without inserting any pass element losses. Because
the current is controlled in an open-loop manner, the
LTC2927 does not affect the transient response or stabil-
ity of the supply. The compact solution at point of load
minimizes the trace length of the DC/DC circuit sensitive
FB node. Furthermore, it presents a high impedance when
power-up is complete, effectively removing it from the
DC/DC circuit.
n VCORE and VI/O Supply Tracking
n Microprocessor, DSP and FPGA Supplies
n Multiple Supply Systems
n Point-of-Load Supplies
n Flexible Power Supply Tracking
n Tracks Both Up and Down
n Power Supply Sequencing
n Supply Stability is Not Affected
n Low Pin Count
n Controls Single Supply without Series FETs
n Adjustable Ramp Rate
n Supply Shutdown Output
n Available in 8-Lead ThinSOT and 8-Lead
(3mm
× 2mm) DFN Packages
138k
100k
ON
RAMP
1.8V
VCC
VIN
EARLY VIN
3.3V
LTC2927
GND
SDO
RUN/SS
FB
IN
DC/DC
FB = 1.235V
OUT
RAMPBUF
TRACK
0.1μF
16.5k
35.7k
13k
ON
RAMP
2.5V
2927 TA01a
VCC
VIN
EARLY VIN
3.3V
LTC2927
GND
SDO
RUN/SS
FB
IN
DC/DC
FB = 0.8V
OUT
RAMPBUF
TRACK
0.1μF
887k
412k
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Patents Pending.
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Track-Up and Track-Down Waveforms
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC2927CTS8#PBF | 制造商:Linear Technology 功能描述:Power Supply 8-Pin TSOT-23 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Cut Tape Single Power Supply Tracking Controller |
| LTC2927CTS8#TR | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRM | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRMPBF | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LTC2927CTS8#TRPBF | 功能描述:IC POWER SUPPLY CTRLR TSOT23-8 RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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