UC3901DW各脚功能电路原理芯片引脚定义引脚图及功能IC贸易商-中国IC网-芯三七

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产品型号UC3901DW的概述

UC3901DW芯片的概述 UC3901DW是一款高性能的电池充电管理芯片，该芯片广泛用于各种电池充电应用中，尤其是在锂离子和锂聚合物电池的领域。其设计旨在优化充电效率，延长电池使用寿命，并提供多种保护功能。UC3901DW属于高效能的线性充电器，能够在不同的充电模式下调整充电电流，并支持多种电池化学成分的充电。该芯片主要应用于便携式电子产品、智能手机、平板电脑和电动工具等领域。其内部集成的控制逻辑和保护机制使其在使用过程中的安全性和可靠性得到了保证，同时，芯片也具备一定的调节和温度保护能力，以适应不同的环境条件。 UC3901DW的详细参数 UC3901DW的主要电气参数包括： - 输入电压范围：通常为4.0V至36V - 充电电流：可调，最大可达到2A - 工作温度范围：-40°C至85°C - 输出电压：可调，常见值为4.2V（适用于锂电池） - 待机电流：低于10µA，有效降...

产品型号UC3901DW的Datasheet PDF文件预览

UC1901

UC2901

UC3901

Isolated Feedback Generator

FEATURES

DESCRIPTION

• An Amplitude-Modulation System for

Transformer Coupling an Isolated

Feedback Error Signal

The UC1901 family is designed to solve many of the problems associ-

ated with closing a feedback control loop across a voltage isolation

boundary. As a stable and reliable alternative to an optical coupler, these

devices feature an amplitude modulation system which allows a loop er-

ror signal to be coupled with a small RF transformer or capacitor.

• Low-Cost Alternative to Optical

Couplers

The programmable, high-frequency oscillator within the UC1901 series

permits the use of smaller, less expensive transformers which can readily

be built to meet the isolation requirements of today's line-operated power

systems. As an alternative to RF operation, the external clock input to

these devices allows synchronization to a system clock or to the switch-

ing frequency of a SMPS.

• Internal 1% Reference and Error

Amplifier

• Internal Carrier Oscillator Usable to

5MHz

• Modulator Synchronizable to an

External Clock

An additional feature is a status monitoring circuit which provides an active-

low output when the sensed error voltage is within 10% of the reference.

• Loop Status Monitor

The DRIVERA output, DRIVERB output, and STATUS output are disabled

until the input supply has reached a sufficient level to allow proper operation

of the device.

Since these devices can also be used as a DC driver for optical couplers,

the benefits of 4.5 to 40V supply operation, a 1% accurate reference, and a

high gain general purpose amplifier offer advantages even though an AC

system may not be desired.

UC1901 SIMPLIFIED SCHEMATIC

UDG-98080

11/98

UC1901

UC2901

UC3901

CONNECTION DIAGRAMS

ABSOLUTE MAXIMUM RATINGS (Note 1)

Input Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . 40V

Reference Output Current . . . . . . . . . . . . . . . . . . . . . . . –10mA

Driver Output Currents . . . . . . . . . . . . . . . . . . . . . . . . . . –35mA

Status Indicator Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V

Status Indicator Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA

Ext. Clock Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V

Error Amplifier Inputs . . . . . . . . . . . . . . . . . . . . . –0.5V to +35V

Power Dissipation at TA = 25°C. . . . . . . . . . . . . . . . . . 1000mW

Power Dissipation at TC = 25°C . . . . . . . . . . . . . . . . . 2000mW

Operating Junction Temperature . . . . . . . . . . –55°C to +150°C

Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . 300°C

DIL-14, SOIC-14 (TOP VIEW)

J or N Package, D Package

Note 1: Voltages are referenced to ground, Pin 7. Currents are

positive into, negative out of the specified terminal.

Note 2: Consult Packaging section of Databook for thermal limi-

tations and considerations of package.

PLCC-20, LCC-20 (TOP VIEW)

Q, L Packages

SOIC-16 Wide (TOP VIEW)

DW Package

TEMPERATURE AND PACKAGE SELECTION

GUIDE

TEMPERATURE

RANGE

AVAILABLE

PACKAGES

UC1901

UC2901

UC3901

–55°C to +125°C

–40°C to +85°C

0°C to +70°C

J, L

D, DW, J, N, Q

UC1901

UC2901

UC3901

ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for V_IN= 10V, R_T= 10kΩ, C_T=

820pF, T_A= T_J.

PARAMETER

TEST CONDITIONS

UC1901/UC2901

MIN TYP MAX

UC3901

TYP

UNITS

MIN

MAX

Reference Section

Output Voltage

T_J= 25°C

_MIN≤ T_J≤ T_MAX

1.485

1.470

1.5 1.515 1.47

1.5 1.530 1.455

1.5

1.53

1.545

Line Regulation

V_IN= 4.5 to 35V

I_OUT= 0 to 5mA

T_J= 25°C

Load Regulation

Short Circuit Current

–35

–55

–35

–55

Error Amplifier Section (To Compensation Terminal)

Input Offset Voltage

Input Bias Current

Input Offset Current

Small Signal Open Loop Gain

CMRR

V_CM= 1.5V

–3

–6

µA

–1

0.1

µA

0.4

–2

0.4

–2

V_CM= 0.5 to 7.5V

V_IN= 2 to 25V

PSRR

100

0.7

150

–3

100

0.7

150

–3

Output Swing, ∆ VO

Maximum Sink Current

Maximum Source Current

Gain Band Width Product

Slew Rate

µA

MHz

V/µS

0.3

Modulators/Drivers Section (From Compensation Terminal)

Voltage Gain

2.8

Output Swing

1.6

2.8

1.6

500

–15

Driver Sink Current

500

–15

700

–35

700

–35

µA

Driver Source Current

MHz

Gain Band Width Product

Oscillator Section

Initial Accuracy

T_J= 25°C

_MIN≤ T_J≤ T_MAX

140

130

150

160

170

.35

130

120

150

170

180

.60

kHz

%/V

MHz

Line Sensitivity

V_IN= 5 to 35V

.15

Maximum Frequency

Ext. Clock Low Threshold

Ext. Clock High Threshold

Status Indicator Section

Input Voltage Window

Saturation Voltage

R_T= 10k, C_T= 10pF

Pin 1 (C_T) = V_IN

0.5

1.6

170

@ E/A Inputs, V_CM= 1.5V

E/A ∆ Input = 0V, I_SINK= 1.6mA

Pin 13 = 3V, E/A ∆ Input = 0.0V

Pin 13 = 40V, E/A ∆Input = 0.2V

V_IN= 35V

135

150

165

130

150

0.45

Max. Output Current

Leakage Current

.05

µA

Supply Current

UVLO Section

Drivers Enabled Threshold

At Input Supply V_IN

3.9

4.5

3.9

4.5

Status Output Enabled

Threshold

Change in Reference Output

When V_INReaches UVLO

Threshold

–2

–30

–2

–30

UC1901

UC2901

UC3901

Note: Transformer Data: N1 = N2 = 20TAWG 26

Core = Ferroxcube 3E2A Ferrite, 0.5" O.D. toroid

Carrier Frequency = 1MHz

Figure 1. Transformer Coupled Open Loop Transfer Function

Figure 2. Oscillator Frequency

APPLICATION INFORMATION

Figure 3. Typical Driver Output Swing vs

Temperature

The error amplifier compensation terminal, Pin 12, is in- With the internal oscillator the squarewave will have a

tended as a source of feedback to the amplifier's invert- fixed 50% duty cycle. If the internal oscillator is disabled

ing input at Pin 11. For most applications, a series DC by connecting Pin 1, C , to V then the frequency and

blocking capacitor should be part of the feedback net- duty cycle of the output will be determined by the input

work. The amplifier is internally compensated for unity clock waveform at Pin 2. If the oscillator remains disabled

feedback.

and there is not clock input at Pin 2, there will be a linear

12dB of signal gain to one or the other of the driver out-

puts depending on the DC state of Pin 2.

The waveform at the driver outputs is a squarewave with

an amplitude that is proportional to the error amplifier in-

put signal. There is a fixed 12dB of gain from the error The driver outputs are emitter followers which will source

amplifier compensation pin to the modulator driver out- a minimum of 15mA of current. The sink current, inter-

puts. The frequency of the output waveform is controlled

by either the internal oscillator or an external clock signal.

nally limited at 700µA, can be increased by adding resis-

tors to ground at the driver outputs.

UC1901

UC2901

UC3901

APPLICATION INFORMATION (continued)

Figure 4. R.F. Transformer Coupled Feedback

Figure 5. Feedback Coupled at Switching Frequency

UC1901

UC2901

UC3901

TYPICAL APPLICATION

UDG-98196

Figure 6. Optically Coupled DC Feedback

UNITRODE CORPORATION

7 CONTINENTAL BLVD. • MERRIMACK, NH 03054

TEL. (603) 424-2410 • FAX (603) 424-3460

IMPORTANT NOTICE

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue

any product or service without notice, and advise customers to obtain the latest version of relevant information

to verify, before placing orders, that information being relied on is current and complete. All products are sold

subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those

pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent

TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily

performed, except those mandated by government requirements.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF

DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL

APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR

WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER

CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO

BE FULLY AT THE CUSTOMER’S RISK.

In order to minimize risks associated with the customer’s applications, adequate design and operating

safeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent

that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other

intellectual property right of TI covering or relating to any combination, machine, or process in which such

semiconductor products or services might be or are used. TI’s publication of information regarding any third

party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

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UC3901DW产品参数

型号:	UC3901DW
Brand Name：	Texas Instruments
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	TEXAS INSTRUMENTS INC
零件包装代码：	SOIC
包装说明：	SOP, SOP16,.4
针数：	16
Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01
Factory Lead Time：	1 week
风险等级：	1.1
模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e4
长度：	10.3 mm
湿度敏感等级：	2
信道数量：	1
功能数量：	1
端子数量：	16
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
封装等效代码：	SOP16,.4
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified
座面最大高度：	2.35 mm
子类别：	Other Analog ICs
最大供电电压 (Vsup)：	40 V
最小供电电压 (Vsup)：	4.5 V
标称供电电压 (Vsup)：	10 V
表面贴装：	YES
技术：	BIPOLAR
温度等级：	COMMERCIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING
端子节距：	1.27 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.5 mm

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