Datasheet > UC2870DWTR-1

UC2870DWTR-1

更新时间： 2024-11-01 21:18:55

品牌	Logo	应用领域
德州仪器 - TI		开关光电二极管
页数	文件大小	规格书
10页	352K
描述
1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PDSO18, PLASTIC, SOIC-18

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技术参数
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UC2870DWTR-1 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	18
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.22
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	最大输入电压：	24 V
最小输入电压：	12 V	标称输入电压：	12 V
JESD-30 代码：	R-PDSO-G18	长度：	11.62 mm
功能数量：	1	端子数量：	18
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	认证状态：	Not Qualified
座面最大高度：	2.64 mm	表面贴装：	YES
切换器配置：	PUSH-PULL	最大切换频率：	300 kHz
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	7.5 mm	Base Number Matches：	1

UC2870DWTR-1 数据手册

UC1870 -1/ -2

UC2870 -1/ -2

UC3870 -1/ -2

High Efficiency, Synchronous, Step-down (Buck) Controllers

FEATURES

DESCRIPTION

• Operation to 36V Input Voltage

The UC3870 family of synchronous step-down (Buck) regulators provides

high efficiency power conversion from an input voltage range of 4.5 to 36

volts. The UC3870 is tailored for battery powered applications such as lap-

top computers, consumer products, communications systems, and aero-

space which demand high performance and long battery life. The

synchronous regulator replaces the catch diode in the standard buck regu-

lator with a low Rds(on) N-channel MOSFET switch allowing for significant

efficiency improvements. The high side N-channel MOSFET switch is

driven out of phase from the low side N-channel MOSFET switch by an

on-chip bootstrap circuit which requires only a single external capacitor to

develop the regulated gate drive. Fixed frequency, average current mode

control provides the regulator with inherent slope compensation, tight regu-

lation of the output voltage, and superior load and line transient response.

Switching frequencies up to 300kHz are possible.

• Fixed Frequency Average Current

Mode Control

• 2V to 3.5V Output Voltage when

Combined with UC3910 Precision

Reference/DAC

• Drives External N-Channel MOSFETs

for Highest Efficiency

• Sleep Mode Current <75 A

• Complementary 1 Amp Outputs with

Regulated Gate Drive Voltage

• LDO (Low Drop Out) Virtual 100%

Duty Cycle Operation

The UC3870-1,-2 is designed to interface directly with precision references

like the UC3910. When combined with the UC3910, output voltages be-

tween 2V to 3.5V in 100mV increments and 1% accuracy are attainable.

This makes the UC3870-1,-2 ideal for powering high performance micro-

processors like the Intel Pentium^Pro and others.

• Non-Overlapping Gate Drives

(continued)

BLOCK DIAGRAM

UDG-96158

Pin Numbers refer to the DIL-18 Package.

SLUS288A - AUGUST 1998 - REVISED OCTOBER 2001

12 3 4 5 6 7...10

中文翻译

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与UC2870DWTR-1相关器件

型号	品牌	获取价格	描述	数据表
UC2870J-1	ETC	获取价格	Current-Mode SMPS Controller
UC2870J-2	ETC	获取价格	Current-Mode SMPS Controller
UC2870L-1	TI	获取价格	1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CQCC20, CERAMIC, LCC-20
UC2870L-2	TI	获取价格	1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CQCC20, CERAMIC, LCC-20
UC2870N-1	ETC	获取价格	Current-Mode SMPS Controller
UC2870N-2	ETC	获取价格	Current-Mode SMPS Controller
UC2870Q-1	TI	获取价格	1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PQCC20
UC2870Q-2	ETC	获取价格	Current-Mode SMPS Controller
UC2870QTR-2	TI	获取价格	1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PQCC20, PLASTIC, LCC-20
UC2871	TI	获取价格	Resonant Fluorescent Lamp Driver

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