Datasheet > UCC3941-ADJD

UCC3941-ADJD

更新时间： 2024-11-10 14:45:23

品牌	Logo	应用领域
德州仪器 - TI		信息通信管理开关光电二极管
页数	文件大小	规格书
3页	81K
描述
SWITCHING REGULATOR, PDSO8, SOIC-8

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技术参数
数据手册

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UCC3941-ADJD 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.69
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
最大输入电压：	3 V	最小输入电压：	1 V
标称输入电压：	1.25 V	JESD-30 代码：	R-PDSO-G8
功能数量：	1	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
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	表面贴装：	YES
切换器配置：	BOOST	技术：	BICMOS
温度等级：	COMMERCIAL	端子形式：	GULL WING
端子位置：	DUAL	Base Number Matches：	1

UCC3941-ADJD 数据手册

DN-73

Design Note

UCC3941 One Volt Boost Converter

Demonstration Kit - Schematic and List

of Materials

The UCC3941-3/-5/-ADJ Demonstration Kit allows

the designer to evaluate the performance of the

UCC3941-3/-5/-ADJ One Volt Boost Converter in a

typical application circuit. Figure 1 shows a sche-

matic for the UCC3941-3/-5/-ADJ Demonstration

Kit. The UCC3941control chip is available in three

output voltage configurations (VOUT = 3.3V, 5V, or

adjustable). The kit can be populated to evaluate

any of these three versions.

are printed on the circuit board next to the associ-

ated components.

Alternate components can be substituted, however

a few words of caution are in order.

High quality low ESL, low ESR, capacitors should

be used in order to keep the output ripple voltage

low and minimize noise that could effect circuit per-

formance. Sprauge 594D/595D series, AVX TPS

series, or Sanyo OS-CON series are good choices.

For the fixed output voltages, R1 is not populated

and R2 is a 0Ω jumper, connecting pin 6 to ground.

With the adjustable version, pin 6 is connected to

A 22µH inductor is recommended for most applica-

tions. An inductor value of less than 10µH should

Note: Part values for 3.3V or 5V versions.

UDG-97112

Figure 1. Demonstration Kit Schematic

the inverting input of a comparator whose non-in-

verting input is internally connected to 1.25V. R1

and R2 are used to program the output voltage,

where

not be used since the rise and fall times will begin

to approach internal timing limits of the IC. Larger

values of inductors will typically result in larger rip-

ple voltages on the outputs, due to the residual

energy stored in the inductor. (Note: Data Sheet

equations for the power limit and peak current as-

sume a 22µH inductor). Inductors exist as standard

part numbers from vendors such as Coilcraft, Coil-

tronics and Sumida.

VOUT = 1.25 • 1 +

SD needs to be grounded, or set to a logic level low,

in order for the chip to operate. If SD is floating, or

set to a logic level high, the UCC3941 enters a low

power shutdown state. R3 sets the power limit of

the device (see the UCC3941-3/-5/-ADJ Data

Sheet). A value of 6.2Ω will limit the output power to

500mW.

A zener diode is used for D1 in order to guarantee

that VGD does not rise above 10V during unloaded

conditions.

For further information, contact a local Unitrode

Representative or Field Applications Engineer at

(603) 424-2410.

Table 1 contains a parts list for the demonstration

kit (fixed output versions). Reference designators

3/97

12 3

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与UCC3941-ADJD相关器件

型号	品牌	获取价格	描述	数据表
UCC3941D3	ROCHESTER	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D3	TI	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-3	TI	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-3	ROCHESTER	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-3G4	TI	获取价格	UCC3941D-3G4
UCC3941D5	TI	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-5	TI	获取价格	1V SYNCHRONOUS BOOST CONVERTER
UCC3941DADJ	TI	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-ADJ	ROCHESTER	获取价格	0.2A SWITCHING REGULATOR, 200kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
UCC3941D-ADJ	TI	获取价格	1V SYNCHRONOUS BOOST CONVERTER

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