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UCC38084DR PDF预览

UCC38084DR

更新时间： 2024-11-28 12:01:43
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光电二极管信息通信管理
页数 文件大小 规格书
27页 918K
描述
8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

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中文翻译

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UCC38084DR 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：SOIC
包装说明：SOIC-8针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.17Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最小输入电压：4.3 V
标称输入电压：10 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e4长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：70 °C
最低工作温度：最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.58 mm
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：1000 kHz
技术：BICMOS温度等级：COMMERCIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.91 mm
Base Number Matches：1

UCC38084DR 数据手册

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SLUS488E − SEPTEMBER 2002 − REVISED JULY 2009  
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FEATURES  
APPLICATIONS  
D
D
D
D
Programmable Slope Compensation  
D
D
D
D
High-Efficiency Switch-Mode Power Supplies  
Telecom dc-to-dc Converters  
Internal Soft-Start on the UCC38083/4  
Cycle-by-Cycle Current Limiting  
Point-of-Load or Point-of-Use Power Modules  
Low Start-Up Current of 120 µA and 1.5 mA  
Typical Run Current  
Low-Cost Push-Pull and Half-Bridge  
Applications  
D
D
Single External Component Oscillator  
Programmable from 50 kHz to 1 MHz  
DESCRIPTION  
The UCC38083/4/5/6 is a family of BiCMOS pulse width  
modulation (PWM) controllers for dc-to-dc or off-line  
fixed-frequency current-mode switching power  
supplies. The dual output stages are configured for the  
push-pull topology. Both outputs switch at half the  
oscillator frequency using a toggle flip-flop. The dead  
time between the two outputs is typically 110 ns, limiting  
each output’s duty cycle to less than 50%.  
High-Current Totem-Pole Dual Output Stage  
Drives Push-Pull Configuration with 1-A Sink  
and 0.5-A Source Capability  
D
Current Sense Discharge Transistor to  
Improve Dynamic Response  
D
Internally Trimmed Bandgap Reference  
Undervoltage Lockout with Hysteresis  
D
The new UCC3808x family is based on the UCC3808A  
architecture. The major differences include the addition  
of a programmable slope compensation ramp to the CS  
signal and the removal of the error amplifier. The current  
flowing out of the ISET pin through an external resistor  
is monitored internally to set the magnitude of the slope  
compensation function. This device also includes an  
OUT internal discharge transistor from the CS pin to ground,  
which is activated at each clock cycle after the pulse is  
terminated. This discharges any filter capacitance on  
the CS pin during each cycle and helps minimize filter  
capacitor values and current sense delay.  
BASIC APPLICATION  
V
IN  
POWER  
TRANSFORMER  
V
VDD  
UCC3808x  
CTRL OUTA  
The UCC38083 and the UCC38084 devices have a  
typical soft-start interval time of 3.5 ms while the  
UCC38085 and the UCC38086 has less than 100 µs for  
applications where internal soft-start is not desired.  
RT  
OUTB  
CS  
R
F
ISET  
The UCC38083 and the UCC38085 devices have the  
turn-on/off thresholds of 12.5 V / 8.3 V, while the  
UCC38084 and the UCC38086 has the turn-on/off  
thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin  
TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P)  
packages.  
GND  
R
T
R
S
R
SET  
C
F
FEEDBACK  
UDG−01080  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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Copyright 2002−2009, Texas Instruments Incorporated  
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中文翻译

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UCC38084DR 替代型号

型号 品牌 替代类型 描述 数据表
UCC38084DG4 TI

完全替代

 8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084DRG4 TI

完全替代

 8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084D TI

类似代替

 8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

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UCC38085 TI

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 		8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38085D TI

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 		8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38085DG4 TI

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 		8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

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