MAX1729

更新时间： 2024-11-19 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		温度补偿
页数	文件大小	规格书
12页	160K
描述
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation

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

MAX1729 数据手册

19-1406; Rev 1; 1/99

ECB a nd LCD Dis pla y Bia s Supply w ith Ac c ura te

Output Volta ge a nd Te m pe ra ture Com pe ns a tion

MAX1729

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

Fe a t u re s

The MAX1729 micropower step-up/step-down DC-DC

converter is ideally suited for electrically controlled bire-

fringence (ECB) and liquid-crystal-display (LCD) bias-

s up p ly g e ne ra tion. It p rovid e s s te p -up /s te p -d own

voltage conversion and reduces output ripple by using

a step-up DC-DC converter followed by a linear regula-

tor. This architecture permits a physically smaller induc-

tor than those used in competing SEPIC and flyback

topologies. This device features low quiescent current

(67µA typical). A logic-controlled shutdown mode fur-

ther reduces quiescent current to 0.4µA typical.

♦ High-Accuracy Reference Voltage (±1%)

♦ ±11ppm/°C Output Voltage Drift

♦ On-Chip Temperature Sensor Output

♦ Accurate Voltage and Temperature Provide:

Consistent ECB Colors

Consistent LCD Gray-Scale Contrast

♦ +2.7V to +5.5V Input Voltage Range

♦ Output Voltage Range

+2.5V to +16V in Internal Feedback Mode

Programmable in External Feedback Mode

The MAX1729 fe a ture s a n inp ut tha t d yna mic a lly

adjusts the output voltage to control display color or

contrast. It offers two feedback modes: internal and

external. Internal feedback mode allows output volt-

a g e s b e twe e n 2.5V a nd 16V, a nd is s p e c ific a lly

d e s ig ne d to hold te mp e ra ture d rift to ± 11p p m/°C.

External feedback mode allows the MAX1729 output

voltage range to be tailored for various displays.

♦ Dynamic Control of the Output Voltage

♦ 67µA Supply Current

♦ 0.4µA Shutdown Current

♦ 10-Pin µMAX Package (1.09mm max height)

♦ Evaluation Kit Available (MAX1729EVKIT)

An on-chip temperature sensor with a positive tempera-

ture coefficient provides compensation for LCD/ECB

display temperature characteristics. In internal feed-

back mode, the buffered temperature sensor output is

read and used to adjust the output voltage via a digital

control signal. External feedback mode features an

additional compensation method in which the tempera-

ture output is summed directly into the feedback net-

work to p rovid e firs t-ord e r ne g a tive te mp e ra ture

compensation of the output voltage. The MAX1729 is

available in the space-saving 10-pin µMAX package.

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

MAX1729EUB

-40°C to +85°C

10 µMAX

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

Ap p lic a t io n s

ECB Display Bias & Color Adjustment

LCD Display Bias & Contrast Adjustment

Cellular Phones

2.7V to 5.5V

Personal Digital Assistants

GND

P in Co n fig u ra t io n

MAX1729

REF

OUT

TOP VIEW

+2.5V to +16V

DIGITAL

PWM

CONTROLLER

10 GND

CTLIN

MAX1729

REF

ADC

COMP

OUT

CTLIN

µMAX

________________________________________________________________ Maxim Integrated Products

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

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...12

中文翻译

下载PDF

与MAX1729相关器件

型号	品牌	获取价格	描述	数据表
MAX17290	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290	ADI	获取价格	2.5V至36V、2.5MHz、PWM升压控制器，关断电流为4μA，可降低EMI
MAX17290ETCC	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290ETCD	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290ETCE	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290ETCE+	MAXIM	获取价格	Switching Controller,
MAX17290ETCF	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290EUBA	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17290EUBB	MAXIM	获取价格	2.5V to 36V, 2.5MHz, PWM Boost Controller wit
MAX17291	ADI	获取价格	高压、1A、微功耗升压转换器，具有短路保护和真关断功能

与MAX1729相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

25
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

17
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

49
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

46

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX1729

MAX1729 数据手册

与MAX1729相关器件

与MAX1729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

MAX1729

MAX1729 数据手册

与MAX1729相关器件

与MAX1729相关文章

您还可以找

您在本页遇到什么问题？