參數(shù)資料
型號(hào)： 3745SN
廠商： Linear Technology Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開關(guān)穩(wěn)壓器
文件頁數(shù)： 8/32頁
文件大小： 309K
代理商： 3745SN
8
LT1374
1374fb
–
+
–
+
–
+
–
+
Σ
INPUT
2.9V BIAS
REGULATOR
500kHz
OSCILLATOR
FREQUENCY
SHIFT CIRCUIT
V
SW
FB
V
C
LOCKOUT
COMPARATOR
GND
1374 BD
SLOPE COMP
0.01
BIAS*
INTERNAL
V
CC
CURRENT
SENSE
AMPLIFIER
VOLTAGE GAIN = 20
SYNC
SHDN
SHUTDOWN
COMPARATOR
CURRENT
COMPARATOR
ERROR
AMPLIFIER
g
m
= 2000
μ
Mho
FOLDBACK
CURRENT
LIMIT
CLAMP
BOOST
R
FLIP-FLOP
DRIVER
CIRCUITRY
S
R
0.9V
Q2
Q1
POWER
SWITCH
2.42V
2.38V
*BIAS PIN IS AVAILABLE ONLY ON THE S0-8 AND FE16 PACKAGES
–
+
0.4V
3.5
μ
A
BLOCK DIAGRA
APPLICATIOU
FEEDBACK PIN FUNCTIONS
The feedback (FB) pin on the LT1374 is used to set output
voltage and provide several overload protection features.
The first part of this section deals with selecting resistors
to set output voltage and the remaining part talks about
foldback frequency and current limiting created by the FB
pin. Please read both parts before committing to a final
design. The fixed 5V LT1374-5 has internal divider resis-
tors and the FB pin is renamed SENSE, connected directly
to the output.
The suggested value for the output divider resistor (see
Figure 2) from FB to ground (R2) is 5k or less, and a
formula for R1 is shown below. The output voltage error
caused by ignoring the input bias current on the FB pin is
less than 0.25% with R2 = 5k. A table of standard 1%
values is shown in Table 1 for common output voltages.
W
U
U
Please read the following if divider resistors are increased
above the suggested values.
(
R
R V
OUT
2
1
2 42
2 42
=
)
Table 1
OUTPUT
VOLTAGE
(V)
R1
% ERROR AT OUTPUT
DUE TO DISCREET 1%
RESISTOR STEPS
+0.23
+0.08
+0.39
–0.5
–0.04
+0.83
–0.62
+0.52
R2
(k
)
4.99
4.99
4.99
4.99
4.99
4.99
4.99
4.99
(NEAREST 1%)
(k
)
1.21
1.82
5.36
7.32
11.5
15.8
19.6
26.1
3
3.3
5
6
8
10
12
15
Figure 1. Block Diagram
相關(guān)PDF資料
PDF描述
374TG 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
3751 4700
376 DIODE SCHOTTKY DUAL-DUAL SERIES 30V 200mW 0.38V-vf 200mA-IFM 1mA-IF 0.2uA-IR SOT-363 3K/REEL
37LV128-TISN DIODE ZENER SINGLE 200mW 2.7Vz 5mA-Izt 0.0741 20uA-Ir 1 SOD-323 3K/REEL
37LV128-TL DIODE ZENER SINGLE 150mW 2.7Vz 5mA-Izt 0.074 20uA-Ir 1 SOD-523 3K/REEL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
3746 功能描述:電纜固定件和配件 PLCC 1500 BLACK NYLON 94V-2 RoHS:否 制造商:Heyco 類型:Cable Grips, Liquid Tight 材料:Nylon 顏色:Black 安裝方法:Cable 最大光束直徑:11.4 mm 抗拉強(qiáng)度:
3746001000 制造商:Laird Technologies Inc 功能描述:CSTR,STR,BF,MC/.080x1.130x.075x4.562
374605 制造商:ERNI Electronics 功能描述:Conn Shrouded Header M 94 POS 2.54mm Solder ST Thru-Hole
374612 制造商:ERNI Electronics 功能描述:374612 / R/2 48 M ABC VVV 3-00 GA06 / DIN M / Old Part# 424201
374624B00000G 制造商:Aavid Thermalloy 功能描述:- Bulk 制造商:Panduit Corp 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*