參數資料
型號： LTC1629I
廠商： Linear Technology Corporation
英文描述： Dual LinCMOS(TM) Timer 14-PDIP
中文描述： 多相，高效率同步降壓型開關穩(wěn)壓器
文件頁數： 1/28頁
文件大?。?/td> 330K
代理商： LTC1629I
1
LTC1629/LTC1629-PG
PolyPhase, High Efficiency,
Synchronous Step-Down Switching Regulators
, LTC and LT are registered trademarks of Linear Technology Corporation.
OPTI-LOOP and PolyPhase are trademarks of Linear Technology Corporation.
The LTC
1629/LTC1629-PG are multiple phase, dual,
synchronous step-down current mode switching regula-
tor controllers that drive N-channel external power MOSFET
stages in a phase-lockable fixed frequency architecture.
The PolyPhase
TM
controller drives its two output stages
out of phase at frequencies up to 300kHz to minimize the
RMS ripple currents in both input and output capacitors.
The output clock signal allows expansion for up to 12
evenly phased controllers for systems requiring 15A to
200A of output current. The multiple phase technique
effectively multiplies the fundamental frequency by the
number of channels used, improving transient response
while operating each channel at an optimum frequency for
efficiency. Thermal design is also simplified.
An internal differential amplifier provides true remote
sensing of the regulated supply’s positive and negative
output terminals as required for high current applications.
A RUN/SS pin provides both soft-start and optional timed,
short-circuit shutdown. Current foldback limits MOSFET
dissipation during short-circuit conditions when the
overcurrent latchoff is disabled. OPTI-LOOP compensa-
tion allows the transient response to be optimized over a
wide range of output capacitance and ESR values. The
LTC1629-PG includes a power good output pin that re-
places the AMPMD control pin of the LTC1629.
Figure 1. High Current Dual Phase Step-Down Converter
I
Desktop Computers
I
Internet Servers
I
Large Memory Arrays
I
DC Power Distribution Systems
I
Dual Controller Operates from One to Twelve Phases
I
Reduces Required Input Capacitance and Power
Supply Induced Noise
I
Current Mode Control Ensures Current Sharing
I
Phase-Lockable Fixed Frequency: 150kHz to 300kHz
I
1.8MHz Effective Switching Frequency
I
True Remote Sensing Differential Amplifier
I
OPTI-LOOP
TM
Compensation Reduces C
OUT
I
±
1% Output Voltage Accuracy
I
Power Good Output Voltage Monitor (LTC1629-PG)
I
Wide V
IN
Range: 4V to 36V Operation
I
Very Low Dropout Operation: 99% Duty Cycle
I
Adjustable Soft-Start Current Ramping
I
Internal Current Foldback Plus Shutdown Timer
I
Overvoltage Soft-Latch Eliminates Nuisance Trips
I
Micropower Shutdown
I
Available in 28-Lead SSOP Package
1629 TA01
TG1
BOOST1
SW1
BG1
PGND
SENSE1
+
SENSE1
–
TG2
BOOST2
SW2
BG2
INTV
CC
SENSE2
+
SENSE2
–
V
IN
RUN/SS
EAIN
V
OS–
V
OS+
I
TH
V
DIFFOUT
LTC1629-PG
SGND
0.1
μ
F
PGOOD
0.1
μ
F
16k
1000pF
S
S
S
S
S
S
S
S
10
3.3k
16k
+
10
μ
F
×
4
35V
CERAMIC
+
C
1000
μ
F
×
2
4V
L1, L2: CEPH149-IROMC
C
: T510E108K004AS
D1, D2: UP5840
M1, M3: IRF7811
M2, M4: IRF7809
V
1.6V/40A
L1
1
μ
H
0.003
V
5V TO 28V
L2
1
μ
H
D2
D1
M1
M2
×
2
M3
M4
×
2
0.47
μ
F
S
0.47
μ
F
10
μ
F
0.003
APPLICATIOU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
相關PDF資料
PDF描述
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LTC1642 Dual LinCMOS(TM) Timer 14-PDIP
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相關代理商/技術參數
參數描述
LTC1629IG 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 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:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1629IG#PBF 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)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
LTC1629IG#TR 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 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:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1629IG#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 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:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1629IGPBF 制造商:Linear Technology 功能描述:DC-DC Controller Step-Down 4-36V SSOP28
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