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參數資料
| 型號： | T1074HV |
| 廠商： | Linear Technology Corporation |
| 英文描述： | BOX EXTRUD ALUM 8.66X6.30X1.20,1 |
| 中文描述： | 降壓型開關穩(wěn)壓器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 215K |
| 代理商： | T1074HV |
LT1074/LT1076
1
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIOU
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Step-Down Switching
Regulator
The LT
1074 is a 5A (LT1076 is rated at 2A) monolithic
bipolar switching regulator which requires only a few
external parts for normal operation. The power switch, all
oscillator and control circuitry, and all current limit com-
ponents, are included on the chip. The topology is a classic
I
Buck Converter with Output Voltage Range of 2.5V
to 50V
I
Tapped-Inductor Buck Converter with 10A Output
at 5V
I
Positive-to-Negative Converter
I
Negative Boost Converter
I
Multiple Output Buck Converter
I
5A Onboard Switch (LT1074)
I
100kHz Switching Frequency
I
Greatly Improved Dynamic Behavior
I
Available in Low Cost 5 and 7-Lead Packages
I
Only 8.5mA Quiescent Current
I
Programmable Current Limit
I
Operates Up to 60V Input
I
Micropower Shutdown Mode
positive “buck” configuration but several design innova-
tions allow this device to be used as a positive-to-negative
converter, a negative boost converter, and as a flyback
converter. The switch output is specified to swing 40V
below ground, allowing the LT1074 to drive a tapped-
inductor in the buck mode with output currents up to 10A.
The LT1074 uses a true analog multiplier in the feedback
loop. This makes the device respond nearly instanta-
neously to input voltage fluctuations and makes loop gain
independent of input voltage. As a result, dynamic behav-
ior of the regulator is significantly improved over previous
designs.
On-chip pulse by pulse current limiting makes the LT1074
nearly bust-proof for output overloads or shorts. The input
voltage range as a buck converter is 8V to 60V, but a self-
boot feature allows input voltages as low as 5V in the
inverting and boost configurations.
The LT1074 is available in low cost TO-220 or TO-3
packages with frequency pre-set at 100kHz and current
limit at 6.5A (LT1076 = 2.6A). A 7-pin TO-220 package is
also available which allows current limit to be adjusted
down to zero. In addition, full micropower shutdown can
be programmed. See Application Note 44 for design
details.
A fixed 5V output, 2A version is also available. See LT1076-5.
Buck Converter Efficiency
Basic Positive Buck Converter
+
+
V
SW
V
IN
V
C
GND
FB
LT1074
5V
5A
C1
500
μ
F
25V
R1
2.8k
1%
R2
2.21k
1%
MBR745*
10V TO 40V
C3
200
μ
F
R3
2.7k
C2
0.01
μ
F
L1**
50
μ
H (LT1074)
100
μ
H (LT1076)
USE MBR340 FOR LT1076
COILTRONICS #50-2-52 (LT1074)
#100-1-52 (LT1076)
PULSE ENGINEERING, INC.
#PE-92114 (LT1074)
#PE-92102 (LT1076)
HURRICANE
#HL-AK147QQ (LT1074)
#HL-AG210LL (LT1076)
RIPPLE CURRENT RATING
≥
I
OUT
/2
*
**
LT1074TA01
OUTPUT LOAD CURRENT (A)
0
E
60
70
80
90
1
2
3
4
LT1074TPC27
5
6
100
50
L = 50
μ
H TYPE 52 CORE
DIODE = MBR735
V = 5V, V = 15V
V = 12V, V = 20V
LT1074
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PDF描述 |
|---|---|
| T10A100 | MICROMATE FEMALE PCB EDGEMT. RoHS Compliant: Yes |
| T10A200 | RF Coaxial Connector Adapter; Body Material:Brass; Body Style:Straight Bulkhead Adapter, Jack-Jack; Impedance:50ohm; Leaded Process Compatible:Yes; Series:N; Contact Termination:Clamp/Solder; Frequency Max:11GHz RoHS Compliant: Yes |
| T10A | BOX EXTRUD ALUM 8.66X6.30X2.03,1 |
| T10A062 | Glass passivated junction |
| T10A068 | Glass passivated junction |
相關代理商/技術參數 |
參數描述 |
|---|---|
| T1075 | 功能描述:變壓器音頻和信號 T1/E1 XFMR DUAL BH RoHS:否 制造商:Skyworks Solutions, Inc. 頻率范圍:810 MHz to 960 MHz 初級線圈阻抗: 次級線圈阻抗: 絕緣電壓:23 dB 工作溫度范圍:- 40 C to + 85 C 端接類型:SMD/SMT 尺寸:6 mm L x 4.9 mm W x 1.6 mm H 產品:Splitters and Combiners |
| T-1075 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:FLYBACK TRANSFORMER |
| T1075-0001 | 制造商:Amphenol Commercial 功能描述:SFP 1X1 CAGE EXTRACTION TOOL |
| T1075-0002 | 制造商:Amphenol Commercial 功能描述:SFP 2X1 CAGE EXTRACTION TOOL |
| T1075-0003 | 制造商:Amphenol Commercial 功能描述:SFP 2X1 CONNR EXTRACTION TOOL |
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