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5962-89511042A

更新时间： 2024-02-08 18:54:49
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器脉冲
页数 文件大小 规格书
9页 440K
描述
Regulating Pulse Width Modulators

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5962-89511042A 技术参数

生命周期：Obsolete包装说明：QCCN, LCC20,.35SQ
Reach Compliance Code：unknown风险等级：5.77
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：35 V最小输入电压：8 V
标称输入电压：20 VJESD-30 代码：S-CQCC-N20
JESD-609代码：e0功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：-55 °C最大输出电流：0.5 A
封装主体材料：CERAMIC, METAL-SEALED COFIRED封装代码：QCCN
封装等效代码：LCC20,.35SQ封装形状：SQUARE
封装形式：CHIP CARRIER认证状态：Not Qualified
筛选级别：MIL-STD-883子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：350 kHz技术：BIPOLAR
温度等级：MILITARY端子面层：TIN LEAD
端子形式：NO LEAD端子节距：1.27 mm
端子位置：QUADBase Number Matches：1

5962-89511042A 数据手册

 浏览型号5962-89511042A的Datasheet PDF文件第2页浏览型号5962-89511042A的Datasheet PDF文件第3页浏览型号5962-89511042A的Datasheet PDF文件第4页浏览型号5962-89511042A的Datasheet PDF文件第5页浏览型号5962-89511042A的Datasheet PDF文件第6页浏览型号5962-89511042A的Datasheet PDF文件第7页 
UC1525A/27A  
UC2525A/27A  
UC3525A/27A  
Regulating Pulse Width Modulators  
FEATURES  
DESCRIPTION  
• 8 to 35V Operation  
The UC1525A/1527A series of pulse width modulator integrated circuits are de-  
signed to offer improved performance and lowered external parts count when  
used in designing all types of switching power supplies. The on-chip +5.1V ref-  
erence is trimmed to ±1% and the input common-mode range of the error ampli-  
fier includes the reference voltage, eliminating external resistors. A sync input to  
the oscillator allows multiple units to be slaved or a single unit to be synchro-  
nized to an external system clock. A single resistor between the CT and the dis-  
charge terminals provides a wide range of dead-time adjustment. These  
devices also feature built-in soft-start circuitry with only an external timing ca-  
pacitor required. A shutdown terminal controls both the soft-start circuitry and  
the output stages, providing instantaneous turn off through the PWM latch with  
pulsed shutdown, as well as soft-start recycle with longer shutdown commands.  
These functions are also controlled by an undervoltage lockout which keeps the  
outputs off and the soft-start capacitor discharged for sub-normal input volt-  
ages. This lockout circuitry includes approximately 500mV of hysteresis for jit-  
ter-free operation. Another feature of these PWM circuits is a latch following the  
comparator. Once a PWM pulse has been terminated for any reason, the out-  
puts will remain off for the duration of the period. The latch is reset with each  
clock pulse. The output stages are totem-pole designs capable of sourcing or  
sinking in excess of 200mA. The UC1525A output stage features NOR logic,  
giving a LOW output for an OFF state. The UC1527A utilizes OR logic which  
results in a HIGH output level when OFF.  
• 5.1V Reference Trimmed to ±1%  
• 100Hz to 500kHz Oscillator Range  
• Separate Oscillator Sync Terminal  
• Adjustable Deadtime Control  
• Internal Soft-Start  
• Pulse-by-Pulse Shutdown  
• Input Undervoltage Lockout with  
Hysteresis  
• Latching PWM to Prevent Multiple  
Pulses  
• Dual Source/Sink Output Drivers  
BLOCK DIAGRAM  
OSC  
OUT  
VREF  
16  
4
13  
11  
VC  
NOR  
UVLO  
Lockout  
Reference  
Regulator  
+VIN 15  
OUTPUT A  
GROUND 12  
To internal  
circuitry  
SYNC  
RT  
3
6
5
7
Flip  
Flop  
NOR  
OSC  
CT  
14  
OUTPUT B  
DISCHARGE  
UC1525A Output Stage  
13  
11  
VC  
COMP  
R
S
S
OR  
COMPENSATION  
INV INPUT  
9
1
2
8
PWM  
La tch  
Error  
Amp  
VREF  
50 µA  
OUTPUT A  
NI INPUT  
SOFTSTART  
OR  
3 kΩ  
SHUTDOWN 10  
14  
OUTPUT B  
5 kΩ  
UC1527A Output Stage  
SLUS191B - February 1997 - Revised June 2005  
1234567...9

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