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參數資料
型號: LTC3867IUF#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩壓器
英文描述: 0.1 A SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC24
封裝: 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24
文件頁數: 1/36頁
文件大小: 380K
代理商: LTC3867IUF#TRPBF
LTC3867
1
3867f
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Synchronous Step-Down
DC/DC Controller with
Differential Remote Sense
and Nonlinear Control
The LTC3867 is a current mode synchronous step-down
switching regulator controller that drives all N-channel
powerMOSFETstages.Outputvoltagetransientexcursions
are minimized by use of a nonlinear control architecture
to eliminate clock latency issues.
The maximum current sense voltage is programmable
from 30mV to 75mV, allowing the use of either a discrete
sense resistor or the inductor DCR as the sensing element.
Programmable DCR temperature compensation allows
constant current limit regardless of inductor tempera-
ture. Programmable inductor temperature-based thermal
shutdown protects the power components from thermal
stress. Soft recovery from output shorts or overcurrent
minimizes output overshoot.
The LTC3867 features a precision 0.6V reference and
can regulate output voltages up to 14V from a wide
4V to 38V input supply range. The LTC3867 includes
a high speed differential remote sense amplifier. Burst
Mode operation, continuous and pulse-skipping modes
are supported. The LTC3867 is available in a 24-lead
(4mm
× 4mm) QFN package.
High Efficiency Synchronous Step-Down Controller
Efficiency and Power Loss
APPLICATIONS
n
VIN Range: 4V to 38V
n
VOUT Range: 0.6V to 14V
n
Nonlinear Control Architecture Minimizes Output
Transient Excursions (Optional)
n
Programmable DCR Temperature Compensation
n
±0.75% 0.6V Voltage Reference
n
Fixed Frequency Range of 200kHz to 1.2MHz
n
PLL Frequency Synchronization
n
RSENSE or DCR Current Sensing
n
Differential Remote Output Voltage Sense
n
Supports Smooth Start-Up into Pre-Biased Outputs
n
Programmable Soft-Start or VOUT Tracking
n
Hiccup Mode/Soft Recovery from Output Overcurrent
n
24-Lead (4mm
× 4mm) QFN Package
n
Automotive Systems
n
Telecom Systems
n
Industrial Equipment
n
Distributed DC Power Systems
L
, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6177787,
6580258, 6498466, 6611131.
+
DIFF+
ITEMP
DIFF
DIFFOUT
INTVCC
SGND
ILIM
TK/SS
FREQ
MODE/PLLIN
IFAST
INTVCC
ITH
SGND
VFB
SENSE
SENSE+
PGOOD
RUN
TG
BOOST
SW
VIN
INTVCC
BG
PGND
0.1F
LTC3867
0.4H
0.22F
3.3k
0.1F
37.4k
330pF
49.9k
75k
100pF
4.7F
DB
3867 TA01a
EXTVCC
ITSD
22F
50V
VIN
5V TO 18V
VOUT
1.5V
10A
330F
×2
+100F
LOAD CURRENT (A)
30
EFFICIENCY
(%)
POWER
LOSS
(W)
90
100
20
10
80
50
70
60
40
0.01
0.1
1
10
100
3867 TA01b
0
1.5
4.0
1.0
0.5
2.5
3.5
3.0
2.0
0
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相關代理商/技術參數
參數描述
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LTC3868EGN-1#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC3868EUFD-1#PBF 功能描述:IC REG CTRLR BUCK PWM CM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:PolyPhase® 特色產品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數:1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC3868EUFD-1#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC3868EUH#PBF 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:PolyPhase® 特色產品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數:1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
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