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參數(shù)資料
| 型號： | LTC1735CGN-1 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 3 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 1/32頁 |
| 文件大?。?/td> | 373K |
| 代理商： | LTC1735CGN-1 |
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1
LTC1735
High Efficiency
Synchronous Step-Down
Switching Regulator
DESCRIPTIOU
The LTC
1735 is a synchronous step-down switching
regulator controller that drives external N-channel power
MOSFETs using a fixed frequency architecture. Burst
Mode
TM
operation provides high efficiency at low load
currents. The precision 0.8V reference is compatible with
future microprocessor generations. OPTI-LOOP compen-
sation allows the transient response to be optimized over
a wide range of output capacitance and ESR values.
The operating frequency (synchronizable up to 500kHz) is
set by an external capacitor allowing maximum flexibility
in optimizing efficiency. A forced continuous control pin
reduces noise and RF interference and can assist second-
ary winding regulation by disabling Burst Mode operation
when the main output is lightly loaded.
Protection features include internal foldback current lim-
iting, output overvoltage crowbar and optional short-
circuit shutdown. Soft-start is provided by an external
capacitor that can be used to properly sequence supplies.
The operating current level is user-programmable via an
external current sense resistor. Wide input supply range
allows operation from 3.5V to 30V (36V maximum).
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are trademarks of Linear Technology Corporation.
I
Dual N-Channel MOSFET Synchronous Drive
I
Synchronizable/Programmable Fixed Frequency
I
Wide V
IN
Range: 3.5V to 36V Operation
I
V
OUT
Range: 0.8V to 6V
I
OPTI-LOOP
TM
Compensation Minimizes C
OUT
I
±
1% Output Voltage Accuracy
I
Internal Current Foldback
I
Output Overvoltage Crowbar Protection
I
Latched Short-Circuit Shutdown Timer
with Defeat Option
I
Very Low Dropout Operation: 99% Duty Cycle
I
Forced Continuous Control Pin
I
Optional Programmable Soft-Start
I
Remote Output Voltage Sense
I
Logic Controlled Micropower Shutdown: I
Q
< 25
μ
A
I
LTC1435 Pin Compatible with
Minor Component Changes
I
Available in 16-Lead Narrow SSOP and SO Packages
APPLICATIU
Figure 1. High Efficiency Step-Down Converter
I
Notebook and Palmtop Computers, PDAs
I
Cellular Telephones and Wireless Modems
I
DC Power Distribution Systems
C
OSC
RUN/SS
I
TH
SGND
V
OSENSE
SENSE
–
SENSE
+
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
LTC1735
C
B
0.22
μ
F
100pF
C
330pF
R
C
33k
R
0.005
V
1.6V
9A
C
OUT
: PANASONIC EEFUEOG181R
C
: MARCON THCR70E1H226ZT
L1: PANASONIC ETQP6FZR0HFA
R
SENSE
: IRC LRF2010-01-R005J
1000pF
C
SS
0.1
μ
F
C
47pF
+
4.7
μ
F
+
C
OUT
180
μ
F
4V
×
4
SP
C
IN
22
μ
F
50V
M1
FDS6680A
M2
FDS6680A
1735 F01
D
CMDSH-3
R1
20k
1%
R2
20k
1%
D1
MBRS340T3
V
5V TO 24V
L1
2
μ
H
C
100pF
FEATURES
TYPICAL APPLICATIO
U
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1735CGN-1#25121 | 制造商:Linear Technology 功能描述: |
| LTC1735CGN-1#25121#TR | 制造商:Linear Technology 功能描述: |
| LTC1735CGN-1#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC1735CGN-1#TR | 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):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) |
| LTC1735CGN-1#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):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) |
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