MAX768

更新时间： 2024-02-02 11:42:01

品牌	Logo	应用领域
美信 - MAXIM		泵
页数	文件大小	规格书
12页	103K
描述
Low-Noise, Dual-Output, Regulated Charge Pump for GaAsFET, LCD, and VCO Supplies

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

MAX768 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	QSOP-16
针数：	16	Reach Compliance Code：	not_compliant
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：	SWITCHED CAPACITOR REGULATOR
控制模式：	VOLTAGE-MODE	最大输入电压：	5.5 V
最小输入电压：	3 V	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e0	长度：	4.89 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出电压：	5 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	1.75 mm	表面贴装：	YES
切换器配置：	DOUBLER INVERTER	最大切换频率：	100 kHz
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn85Pb15)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3.9 mm
Base Number Matches：	1

MAX768 数据手册

19-1174; Rev 0; 12/96

Low -Nois e , Dua l-Output, Re gula te d Cha rge Pum p

for Ga As FET, LCD, a nd VCO Supplie s

MAX768

_______________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

The MAX768 low-noise, dual-output, regulated charge

pump provides a negative output for biasing GaAsFET

power amplifiers, and a positive output for powering

voltage-controlled oscillators (VCOs) in wireless hand-

sets. The outputs can also be used to power LCDs.

Outp ut rip p le is le s s tha n 2mVp -p . The MAX768 is

intended for use in low-voltage systems where a simple

charge-pump inverter is inadequate, or where the VCO

needs more range to improve its signal-to-noise ratio.

The input range is 2.5V to 5.5V, enabling direct power

from 1Li+ and 3-cell NiMH/NiCd batteries.

♦ Dual Positive/Negative Regulated Outputs:

±5V

from 3V

OUT

♦ Output-Ready Indicator to Protect GaAsFET PAs

♦ 2.5V to 5.5V Input Voltage Range

♦ Low-Noise Output Ripple: < 2mVp-p

♦ Synchronizable Switching Frequency

♦ Uses Only Small, Low-Cost Capacitors

♦ 0.1µA Independent Shutdown Controls

♦ Adjustable Output Voltages

The MAX768 includes a voltage-doubler charge pump,

followed by an inverting charge pump. This combina-

tion produces unregulated outputs that are ±2x the

input. Two internal low-dropout linear regulators provide

the low-noise, regulated positive and negative outputs.

Output current is guaranteed to be at least 5mA per

output. The linear regulators use CMOS devices, so the

quiescent current remains independent of output load-

ing (e ve n in d rop out), a nd the d rop out volta g e

approaches zero with no load current.

♦ Small 16-Pin QSOP Package

______________Ord e rin g In fo rm a t io n

PART

MAX768C/D

MAX768EEE

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

Dice*

-40°C to +85°C

16 QSOP

*Dice are specified at T = +25°C, DC parameters only.

The MAX768 ha s two pre se t switc hing fre q ue nc ie s

(25kHz or 100kHz), or can be synchronized by an exter-

nal clock from 20kHz to 240kHz. This flexibility permits

users to optimize their designs based on noise, capaci-

tor size, and quiescent-supply-current criteria.

Pin Configuration appears at end of data sheet.

Dual Mode is a trademark of Maxim Integrated Products.

__________Typ ic a l Op e ra t in g Circ u it

The device features Dual Mode™ operation: the output

voltage is preset to +5V and -5V, or can be adjusted by

adding external resistor dividers. Other features include

independent shutdowns and a logic output that signals

when the negative voltage has risen to within 10% of its

re g ula tion s e tp oint (to p rote c t the p owe r a mp lifie r

GaAsFET). The MAX768 is available in a space-saving,

16-pin QSOP, which is the same size as a standard

8-pin SO.

(3.0V TO 5.5V)

POSITIVE

OUTPUT

+5V

SYNC

PSHDN

NSHDN

C1+

POUT

V+

________________________Ap p lic a t io n s

GaAsFET Power Amp Bias

Voltage-Controlled Oscillator (VCO) Supply

Tuner Diode Power Supply

Positive and Negative LCD Supply

Cellular Phone

MAX768

C1-

V-

NEGATIVE

OUTPUT

-5V

C2+

NOUT

RDY

PCS and Cordless Phone

C2-

OUTPUT-

READY

SIGNAL

Wireless Handsets

SETN GND SETP

Wireless Handheld Computers

Wireless PCMCIA Cards

Modems

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

12 3 4 5 6 7...12

中文翻译

下载PDF

与MAX768相关器件

型号	品牌	获取价格	描述	数据表
MAX768C/D	MAXIM	获取价格	Low-Noise, Dual-Output, Regulated Charge Pump for GaAsFET, LCD, and VCO Supplies
MAX768EEE	MAXIM	获取价格	Low-Noise, Dual-Output, Regulated Charge Pump for GaAsFET, LCD, and VCO Supplies
MAX768EEE+	ROCHESTER	获取价格	SWITCHED CAPACITOR REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO16, QSOP-16
MAX768EEE+	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 100kHz Switching Freq-Max, CMOS, PDSO16, QSOP-
MAX768EEE+T	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 100kHz Switching Freq-Max, CMOS, PDSO16, QSOP-
MAX768EEE-T	MAXIM	获取价格	Switched Capacitor Regulator, Voltage-mode, 100kHz Switching Freq-Max, CMOS, PDSO16, QSOP-
MAX769	MAXIM	获取价格	2 or 3-Cell, Step-Up/Down, Two-Way Pager System IC
MAX769EEI	MAXIM	获取价格	2 or 3-Cell, Step-Up/Down, Two-Way Pager System IC
MAX769EEI+	MAXIM	获取价格	Telecom Circuit, 1-Func, PDSO28, 0.150 INCH, 0.635 MM PITCH, QSOP-28
MAX769EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX769

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX768

MAX768 技术参数

MAX768 数据手册

与MAX768相关器件

与MAX768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

MAX768

MAX768 技术参数

MAX768 数据手册

与MAX768相关器件

与MAX768相关文章

您还可以找

您在本页遇到什么问题？