參數(shù)資料
型號： LT1737IS
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： High Power Isolated Flyback Controller
中文描述： SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SO-16
文件頁數(shù)： 1/28頁
文件大小： 320K
代理商： LT1737IS
1
LT1737
1737f
APPLICATIU
FEATURES
DESCRIPTIOU
High Power
Isolated Flyback Controller
The LT
1737 is a monolithic switching regulator control-
ler specifically designed for the isolated flyback topology.
It drives the gate of an external MOSFET and is generally
powered from a DC supply voltage. Output voltage feed-
back information may be supplied by a variety of methods
including a third transformer winding, the primary wind-
ing or even direct DC feedback (see Applications Informa-
tion). Its gate drive capability, coupled with a suitable
external MOSFET and other power path components, can
deliver load power up to tens of Watts.
The LT1737 has a number of features not found on other
isolated flyback controller ICs. By utilizing current mode
switching techniques, it provides excellent AC and DC line
regulation. Its unique control circuitry can maintain regu-
lation well into discontinuous mode in most applications.
Optional load compensation circuitry allows for improved
load regulation. An optional undervoltage lockout pin
halts operation when the application input voltage is too
low. An optional external capacitor implements a soft-
start function.
I
Drives External Power MOSFET
I
Supply Voltage Range: 4.5V to 20V
I
Flyback Voltage Limited Only by
External Components
I
Senses Output Voltage Directly from Primary Side
Winding—No Optoisolator Required
I
Switching Frequency from 50kHz to 250kHz
with External Capacitor
I
Moderate Accuracy Regulation Without User Trims
I
Regulation Maintained Well into Discontinuous Mode
I
External I
SENSE
Resistor
I
Optional Load Compensation
I
Optional Undervoltage Lockout
I
Shutdown Feature Reduces I
Q
to 50
μ
A Typ
I
Available in 16-Pin GN and SO Packages
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Isolated Flyback Switching Regulators
I
Medical Instruments
I
Instrumentation Power Supplies
12V-18V to Isolated 15V Converter
PGND
I
SENSE
GATE
V
C
FB
R1
0.27
M1
IRFL014
T1
COILTRONICS
CTX150-4
V
IN
V
CC
UVLO
SGND
1737 TA01
R
CMPC
R
OCMP
MINENAB
LT1737
ENDLY
OSCAP
t
ON
R3
3.01k
1%
C3
0.1
μ
F
D1
MBRS1100
C2
33
μ
F
+
R4
7.5k
V
OUT
= 15V
I
OUT
= 300mA
D2
BAS16
Q1
2N3906
R2
35.7k
1%
C1
22
μ
F
150
μ
H
150
μ
H
+
240k
33k
1nF
47pF
75k
150k
100k
4.7k
0.1
μ
F
NOTE: SEE APPLICATIONS
INFORMATION FOR ADDITIONAL
COMPONENT SPECIFICATIONS
TYPICAL APPLICATIOU
相關(guān)PDF資料
PDF描述
LT1737CGN High Power Isolated Flyback Controller
LT1737IGN High Power Isolated Flyback Controller
LT1737 High Power Switching Regulator for Isolated Flyback Controller(大功率，用于隔離回掃控制器的開關(guān)穩(wěn)壓器)
LT1738 Slew Rate Controlled Ultralow Noise DC/DC Controller
LT1738EG Slew Rate Controlled Ultralow Noise DC/DC Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1737IS#PBF 功能描述:IC REG CTRLR FLYBK ISO CM 16SOIC 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)
LT1737IS#PBF 制造商:Linear Technology 功能描述:ICSMPS CONTROLLERCURRENT-MOD 制造商:Linear Technology 功能描述:IC,SMPS CONTROLLER,CURRENT-MODE,SOP,16PI
LT1737IS#TR 功能描述:IC REG CTRLR FLYBK ISO CM 16SOIC 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)
LT1737IS#TRPBF 功能描述:IC REG CTRLR FLYBK ISO CM 16SOIC 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)
LT1738 制造商:LINER 制造商全稱:Linear Technology 功能描述:Slew Rate Controlled Ultralow Noise DC/DC Controller
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