DEVICE PARAMETERS, FIXED and ADJUSTABLE REGULATORS
f
O
Oscillator Frequency
50
52
100/
500
nA
kHz
kHz(min)
kHz(max)
V
V(max)
%
%(max)
A
A(min)
A(max)
mA(max)
mA
mA(max)
mA
mA(max)
µA
µA(max)
°C/W
47/
42
58/
63
Saturation Voltage
Max Duty Cycle (ON)
Current Limit
I
OUT
= 1A (
Note 4
)
(
Note 5
)
Peak Current, t
ON
≤
3µs (
Note 4
)
0.9
1.2/
1.4
98
93
2.2
1.7/
1.3
3.0/
3.2
2
75
30
5
10
Standby Quiescent Current
ON/OFF Pin = 5V (OFF)
50
200
65
45
2
85
100
1.4
1.2
4
30
ON /OFF Pin = 0V (ON)
0.01
10
2.2/
2.4
1.0/
0.8
V
SAT
DC
I
CL
I
L
Output Leakage Current
V
IN
= 40V, (
Note 6
),
(
Note 6
)
(
Note 6
)
Output = 0V
Output = –1V
Output = –1V
I
Q
I
STBY
Quiescent Current
T Package, Junction to Ambient (
Note 7
)
θ
JA
Thermal Resistance
T Package, Junction to Ambient (
Note 8
)
θ
JA
θ
JC
T Package, Junction to Case
N Package, Junction to Ambient (
Note 9
)
θ
JA
WM Package, Junction to Ambient (
Note 9
)
θ
JA
ON/OFF CONTROL, FIXED and ADJUSTABLE REGULATORS
Test Circuit Figure 1
V
IH
V
IL
I
IH
I
IL
Notes:
ON/OFF Pin Logic
Input Level
ON/OFF Pin Logic
Current
V
OUT
= 0V
V
OUT
= 5V
ON /OFF Pin = 5V (OFF)
V(min)
V(max)
µA
µA(max)
µA
µA(max)
1. Absolute Maximum Rating indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device
is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical
Characteristics.
2. All limits guaranteed at room temperature (standard type face) and at
temperature extremes (bold type face).
All room temperature limits are100%
production tested. All limits at
temperature extreme
are guaranteed via testing.
3. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the
LM2575/LM1575 is used as shown in Figure 1 test circuit, system performance will be shown in system parameters section of Electrical
Characteristics.
4. Output (pin 2) sourcing current. No diode, inductor or capacitor connected to output.
5. Feedback (pin 4) removed from output and connected to 0V.
6. Feedback (pin 4) removed from output and connected to 12V to force the output transistor OFF.
7. Junction to ambient thermal resistance (no external heat sink) for the 5-pin TO-220 package mounted vertically, with 1/2" leads in a socket, or on PC
board with minimum copper area.
8. Junction to ambient thermal resistance (no external heat sink) for the 5-pin TO-220 package mounted vertically, with 1/4" leads soldered to PC
board containing approximately 4 square inches of copper area surrounding the leads.
9. Junction to ambient thermal resistance with approximately 1 square inch of pc board copper surrounding the leads. Additional copper will lower
Supply Chain SupervisorResponsibilities1 Continuously improve supplier management, cost control, delivery guarantee system and process2 Responsible for establishing and maintaining the procurement mat...
The main function of the emergency plan is that when the system cannot work normally, the instrument personnel can use the plan to promptly determine the cause of the failure and take emergency treatm...
Hello everyone, I have the following questions: The file system is DosFd. I need to intercept a file. For example, if there is a 4M file, I want to delete the last 1M and only keep the first 3M. I can...
In PCB design, grounding is an important measure to suppress noise and prevent interference. There are different grounding methods according to different circuits. Only correct grounding can reduce or...
1. The concept of constraint files
There are three types of constraint files in FPGA design: user design files (.UCF files), netlist constraint files (.NCF files), and physical constraint files (.PCF ...
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
1. Introduction
Since the 1980s, with the continuous development of automotive electronic technology, there are more and more electronic control units in automobiles, such as electronic fuel i...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
0 Introduction
With the rapid development of social economy and science and technology, electric locomotives, subways and electric vehicles will be widely used. The power conversion and cont...[Details]
0 Introduction
There are many types of sensors, and the working principles, measurement targets and measurement environments of different types of sensors vary greatly. The corresponding detection s...[Details]
Fruit planting is an important part of China's agricultural development, and fruit tree pest control operations are becoming more and more important. At present, the overall level of pesticide applica...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
The demand for improved healthcare environments is endless, so medical imaging equipment with higher resolution is needed to better observe the human body. High resolution brings problems with sign...[Details]
Battery clamps, commonly known as battery connectors, come in two sizes depending on the thickness of the battery terminals. One is the battery clamp used on thick terminals, with a positive termin...[Details]
Recruitment
京公网安备 11010802033920号
EEWORLD
