Datasheet > UCC3945-ADJ

UCC3945-ADJ

更新时间： 2024-09-18 21:53:51

品牌	Logo	应用领域
其他 - ETC		转换器升压转换器
页数	文件大小	规格书
11页	192K
描述
1V Synchronous Boost Converter

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

UCC3945-ADJ 数据手册

application

INFO

UCC2941-3/-5/-ADJ

UCC3941-3/-5/-ADJ

available

1V Synchronous Boost Converter

FEATURES

DESCRIPTION

• 1V Input Voltage Operation Startup

Guaranteed Under Full Load on Main

Output With Operation Down to 0.4V

The UCC3941 family of low input voltage single inductor boost converters

are optimized to operate from a single or dual alkaline cell, and step up to

a 3.3V, 5V, or an adjustable output at 500mW. The UCC3941 family also

provides an auxiliary 9V 100mW output, primarily for the gate drive supply,

which can be used for applications requiring an auxiliary output such as a

5V supply by linear regulating. The primary output will start up under full

load at input voltages typically as low as 0.8V, with a guaranteed maximum

of 1V, and will operate down to 0.4V once the converter is operating, maxi-

mizing battery utilization.

• Input Voltage Range of 1V to V_OUT

0.5V

• 500mW Output Power at Battery

Voltages as Low as 0.8V

• Secondary 9V Supply From a Single

Inductor

Demanding applications such as Pagers and PDA’s require high efficiency

from several milli-watts to several hundred milli-watts, and the UCC3941

family accommodates these applications with >80% typical efficiencies

over the wide range of operation. The high efficiency at low output current

is achieved by optimizing switching and conduction losses along with low

quiescent current. At higher output current the 0.25Ω switch, and 0.4Ω syn-

chronous rectifier, along with continuous mode conduction, provide high ef-

ficiency. The wide input voltage range on the UCC3941 family can

accommodate other power sources such as NiCd and NiMH.

• Adjustable Output Power Limit Control

• Output Fully Disconnected in

Shutdown

• Adaptive Current Mode Control for

Optimum Efficiency

• 8µA Shutdown Supply Current

Other features include maximum power control and shutdown control.

Packages available are the 8-pin SOIC (D) and 8-pin DIP (N or J).

SIMPLIFIED BLOCK DIAGRAM AND APPLICATION CIRCUIT

10µF

0.8V TO VOUT +0.5V

22µH

VIN

UCC3941-3 = 3.3V

UCC3941-5 = 5.0V

UCC3941-ADJ = 1.30V TO 6V

VOUT

VGD

0.4Ω

STARTUP

CIRCUITRY

10µF

0.25Ω

100µF

MODULATOR CONTROL CIRCUIT

SYNCHRONOUS RECTIFICATION CIRCUITRY

ANTI-CROSS CONDUCTION

STARTUP

MULTIPLEXING LOGIC

MAXIMUM INPUT POWER CONTROL

ADAPTIVE CURRENT CONTROL

PLIM

*SGND/FB

OPEN=SD

UCC3941-ADJ

1.25V

–

PGND

*FOR UCC3941-ADJ ONLY:

PIN 7 = SGND & PGND, PIN 6 = OUTPUT SENSE FEEDBACK, FB.

UDG-98147

SLUS242 - JULY 1999

12 3 4 5 6 7...11

中文翻译

下载PDF

与UCC3945-ADJ相关器件

型号	品牌	获取价格	描述	数据表
UCC3946	TI	获取价格	Microprocessor Supervisor with Watchdog Timer
UCC3946D	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946DG4	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946DR	TI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, PLASTIC, MS-012AA, SOIC-8
UCC3946DTR	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946DTRG4	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946N	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946NG4	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946PW	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
UCC3946PWG4	TI	获取价格	MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER

与UCC3945-ADJ相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

29
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

28
SL74HC10N：高性能三输入与非门解析
2024-09-03

100
AIC1781A 电池充电控制器深度解析
2024-09-03

94

产品中心

服务支持

精选活动

关于我们

帮助中心

UCC3945-ADJ

UCC3945-ADJ 数据手册

与UCC3945-ADJ相关器件

与UCC3945-ADJ相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

UCC3945-ADJ

UCC3945-ADJ 数据手册

与UCC3945-ADJ相关器件

与UCC3945-ADJ相关文章

您还可以找

您在本页遇到什么问题？