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IMP38HC42/D PDF预览

IMP38HC42/D

更新时间： 2024-11-09 22:13:43
品牌 Logo 应用领域
IMP 开关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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IMP38HC42/D 技术参数

生命周期：Obsolete零件包装代码：DIE
包装说明：,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84Is 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标称输入电压：15 V
JESD-30 代码：X-XUUC-N功能数量：1
封装主体材料：UNSPECIFIED封装形状：UNSPECIFIED
封装形式：UNCASED CHIP认证状态：Not Qualified
表面贴装：YES切换器配置：SINGLE
最大切换频率：1000 kHz技术：BICMOS
端子形式：NO LEAD端子位置：UPPER
Base Number Matches：1

IMP38HC42/D 数据手册

 浏览型号IMP38HC42/D的Datasheet PDF文件第2页浏览型号IMP38HC42/D的Datasheet PDF文件第3页浏览型号IMP38HC42/D的Datasheet PDF文件第4页浏览型号IMP38HC42/D的Datasheet PDF文件第5页浏览型号IMP38HC42/D的Datasheet PDF文件第6页浏览型号IMP38HC42/D的Datasheet PDF文件第7页 
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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