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IMP38C42EPD PDF预览

IMP38C42EPD

更新时间： 2024-11-08 22:48:11
品牌 Logo 应用领域
IMP 光电二极管信息通信管理控制器
页数 文件大小 规格书
10页 160K
描述
BiCMOS Current-Mode PWM Controllers

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中文翻译

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IMP38C42EPD 技术参数

生命周期：Obsolete零件包装代码：DIP
包装说明：DIP, DIP14,.3针数：14
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.84
Is 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：9 V标称输入电压：15 V
JESD-30 代码：R-PDIP-T14功能数量：1
端子数量：14最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.5 A
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装等效代码：DIP14,.3封装形状：RECTANGULAR
封装形式：IN-LINE认证状态：Not Qualified
子类别：Switching Regulator or Controllers表面贴装：NO
切换器配置：SINGLE最大切换频率：1000 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUALBase Number Matches：1

IMP38C42EPD 数据手册

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IMP38C/HC/42/3/4/5  
P
OWER  
M
ANAGEMENT  
Key Features  
BiCMOS Current-Mode  
PWM Controllers  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
384x Series Pinout with BiCMOS Technology  
Zero Cross-Conduction Current by Design  
1MHz Operation  
65ns Maximum Current-Sense Delay  
120µA Maximum Start-Up Current  
1.5mA Maximum Operating Current  
High Output Current Drive  
– 1.0A, IMP38HC4x  
– 0.5A, IMP38C4x  
20V Maximum Supply Voltage  
2.5V, 1%, Trimmed Error Amplifier Reference  
Trimmed Oscillator Discharge Current  
Pin-for-Pin Enhanced Replacements for Micrel  
MIC38C/HC4x and GMT38C4x/HC4x  
– 1MHz Operation  
– No Cross-Conduction Current  
– 50ns Current-Sense Delay  
The IMP38C4x and IMP38HC4x are fixed frequency, high performance,  
current-mode PWM controllers that are pin compatible with bipolar 384x  
devices but feature improvements resulting from IMP’s BiCMOS  
processing and circuit design. Notable among the improvements are zero  
cross-conduction/shoot-through current, reduced start-up and operating  
current, lower current-sense delay, higher frequency operation, full  
supply voltage swing at the output and a 1% trimmed voltage reference.  
ꢀ
ꢀ
ꢀ
ꢀ
IMP38C4x and IMP38HC4x output driver stage has zero cross-conduction  
current. A proprietary output state-machine monitors each output  
MOSFET and guarantees by design zero cross-conduction current. This is  
an industry first for 384x PWM devices.  
Under-voltage lockout (UVL) performance has been improved. When  
the power supply voltage is below the startup voltage, internal circuitry  
puts the output into a low impedance state. The output will sink 20mA  
and remain below 1.3V, well below the turn-on threshold voltage of the  
external MOSFET. Even when VDD drops to zero volts, the out pin will  
not rise above approximately 1.3V because the output UVLO circuit is  
Block Diagrams  
7 (12)  
VDD  
(11)  
VD  
+
5V  
8 (14)  
VREF  
UVLO  
Reference  
–
+
–
4 (7)  
1 (1)  
2 (3)  
6 (10)  
OUT  
RTCT  
COMP  
FB  
Oscillator  
T
Q
Q
–
+
2R  
S
R
–
EA  
1V  
COMP  
+
–
+
R
2.5V  
Ref  
(8)  
PGND  
Connection Notes  
3 (5)  
(
) Pins Are 14-Pin Devices Only  
IMP38C4X, IMP38HC4X (8-Pin Devices)  
50% Maximum Duty Cycle:  
IMP38C44, IMP38HC44, IMP38C45, IMP38HC45  
GND 5 ISNS  
AGND (9)  
96% Maximum Duty Cycle:  
IMP38C42, IMP38HC42, IMP38C43, IMP38HC43  
38C/HC_01.eps  
© 2000 IMP, Inc.  
408-432-9100/www.impweb.com  
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