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參數(shù)資料
| 型號： | SG3525A |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Pulse Width Modulator Control Circuit(脈寬調(diào)制器控制電路) |
| 中文描述： | 脈寬調(diào)制控制電路（脈寬調(diào)制器控制電路） |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 142K |
| 代理商： | SG3525A |
SG3525A
http://onsemi.com
3
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Supply Voltage
V
CC
+40
Vdc
Collector Supply Voltage
V
C
+40
Vdc
Logic Inputs
0.3 to +5.5
V
Analog Inputs
0.3 to V
CC
V
Output Current, Source or Sink
I
O
±
500
mA
Reference Output Current
I
ref
50
mA
Oscillator Charging Current
5.0
mA
Power Dissipation
T
A
= +25
°
C (Note 1)
T
C
= +25
°
C (Note 2)
P
D
1000
2000
mW
Thermal Resistance, JunctiontoAir
R
JA
100
°
C/W
Thermal Resistance, JunctiontoCase
R
JC
60
°
C/W
Operating Junction Temperature
T
J
+150
°
C
Storage Temperature Range
T
stg
55 to +125
°
C
Lead Temperature (Soldering, 10 seconds)
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Derate at 10 mW/
°
C for ambient temperatures above +50
°
C.
2. Derate at 16 mW/
°
C for case temperatures above +25
°
C.
T
Solder
+300
°
C
RECOMMENDED OPERATING CONDITIONS
Characteristics
Symbol
Min
Max
Unit
Supply Voltage
V
CC
8.0
35
Vdc
Collector Supply Voltage
V
C
4.5
35
Vdc
Output Sink/Source Current
(Steady State)
(Peak)
I
O
0
0
±
100
±
400
mA
Reference Load Current
I
ref
0
20
mA
Oscillator Frequency Range
f
osc
0.1
400
kHz
Oscillator Timing Resistor
R
T
2.0
150
k
Oscillator Timing Capacitor
C
T
0.001
0.2
F
Deadtime Resistor Range
R
D
0
500
Operating Ambient Temperature Range
T
A
0
+70
°
C
APPLICATION INFORMATION
Shutdown Options
(See Block Diagram, page 2)
Since both the compensation and softstart terminals
(Pins 9 and 8) have current source pullups, either can
readily accept a pulldown signal which only has to sink a
maximum of 100 A to turn off the outputs. This is subject
to the added requirement of discharging whatever external
capacitance may be attached to these pins.
An alternate approach is the use of the shutdown circuitry
of Pin 10 which has been improved to enhance the available
shutdown options. Activating this circuit by applying a
positive signal on Pin 10 performs two functions: the PWM
latch is immediately set providing the fastest turnoff signal
to the outputs; and a 150 A current sink begins to discharge
the external softstart capacitor. If the shutdown command
is short, the PWM signal is terminated without significant
discharge of the softstart capacitor, thus, allowing, for
example, a convenient implementation of pulsebypulse
current limiting. Holding Pin 10 high for a longer duration,
however, will ultimately discharge this external capacitor,
recycling slow turnon upon release.
Pin 10 should not be left floating as noise pickup could
conceivably interrupt normal operation.
相關PDF資料 |
PDF描述 |
|---|---|
| SG3526 | PULSE WIDTH MODULATION CONTROL CIRCUIT |
| SG3526 | PULSE WIDTH MODULATION CONTROL CIRCUIT |
| SG3526N | PULSE WIDTH MODULATION CONTROL CIRCUIT |
| SG3526 | REGULATING PULSE WIDTH MODULATOR |
| SG3526DW | REGULATING PULSE WIDTH MODULATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SG3525A_05 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Pulse Width Modulator Control Circuit |
| SG3525ADW | 功能描述:電壓模式 PWM 控制器 8-35V PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG3525ADWG | 功能描述:電壓模式 PWM 控制器 8-35V PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG3525ADWR2 | 功能描述:電壓模式 PWM 控制器 8-35V PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SG3525ADWR2G | 功能描述:電壓模式 PWM 控制器 8-35V PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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