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MAX1677EEE+

更新时间： 2024-10-01 13:10:23

品牌	Logo	应用领域
美信 - MAXIM		转换器 DC-DC转换器
页数	文件大小	规格书
16页	202K
描述
Switching Regulator, Current-mode, 0.8A, 360kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 INCH PITCH, QSOP-16

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技术参数
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替代型号

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MAX1677EEE+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SSOP,	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	0.87	Is Samacsys：	N
其他特性：	CAN ALSO FUNCTION IN PFM MODE	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	CURRENT-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	0.7 V
标称输入电压：	2.4 V	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3	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	最大输出电流：	0.8 A
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）：	260	认证状态：	Not Qualified
座面最大高度：	1.73 mm	表面贴装：	YES
切换器配置：	BOOST	最大切换频率：	360 kHz
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
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

MAX1677EEE+ 数据手册

19-1403; Rev 0; 11/98

Co m p a c t , Hig h -Effic ie n c y, Du a l-Ou t p u t

S t e p -Up a n d LCD Bia s DC-DC Co n ve rt e r

MAX167

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

Fe a t u re s

The MAX1677 is a compact, high-efficiency, dual-out-

put boost converter for portable devices needing two

regulated supplies, typically for logic and liquid crystal

displays (LCDs). Operation with inputs as low as 0.7V

allows the MAX1677 to accept 1, 2, or 3-cell alkaline,

NiCd, or NiMH batteries as well as 1-cell lithium-ion bat-

teries. The device requires no external FETs and can

maintain regulation while consuming only 20µA, making

it ideal for hand-held pen-input and PDA devices oper-

ating with low-current “sleep” states.

♦ No External FETs Required

♦ Main Output

Up to 350mA for Logic Supply

Fixed 3.3V or Adjustable (2.5V to 5.5V)

Synchronous Rectification for High Efficiency

(up to 95%)

300kHz (200kHz to 400kHz Synchronizable)

Fixed-Frequency PWM Operation

♦ Secondary Output

The MAX1677’s p rima ry re g ula tor s up p lie s up to

350mA at either a factory-preset 3.3V or an adjustable

2.5V to 5.5V output. On-chip synchronous rectification

provides efficiencies up to 95%. 300kHz (or externally

clocked) pulse-width-modulation (PWM) operation is

particularly suitable for applications needing low noise,

such as those with wireless features. The primary con-

verter also features pin-selectable pulse-frequency-

modulation (PFM) operation that consumes only 20µA.

A 1µA shutdown state also minimizes battery drain.

Up to +28V or -28V for LCD Bias

Programmable Current Limit

♦ 0.7V to 5.5V Input Voltage Range

♦ 20µA Quiescent Current

♦ 1µA Shutdown Current

♦ Low-Battery Comparator

♦ Small 16-Pin QSOP Package

The MAX1677’s secondary step-up converter supplies up

to +28V or -28V for LCD bias, varactor tuning, or other

high-voltage, low-current functions. Other MAX1677 fea-

tures include precision reference, logic control inputs for

both regulators, and an uncommitted comparator for

low-battery detection or a reset function. The MAX1677

is supplied in Maxim’s compact 16-pin QSOP package,

which occupies no more space than a standard SO-8.

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

MAX1677EEE

-40°C to +85°C

16 QSOP

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

Ap p lic a t io n s

PDAs

Portable Phones

Hand-Held Terminals

Portable Instruments

= 0.7V to 5.5V

3.3V MAIN

(UP TO MAIN

)

BOOST OUTPUT

OUT

POUT

P in Co n fig u ra t io n

MAX1677

±28V

LCD

BOOST

OUTPUT

LCDLX

OUT

LBO

TOP VIEW

OUT

16 POUT

15 LX

LBI

LCDFB

REF

LCDON

LBI

14 PGND

OFF

PWM

LBO

MAX1677

13 LCDGND

12 LCDLX

11 ON

CLK/SEL

PFM

CLK/SEL

LCDON

LCDPOL

REF

OFF

+VE OUT

LCDGND

GND

LCDPOL

PGND

-VE OUT

10 LCDFB

GND

QSOP

________________________________________________________________ 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...16

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MAX1677EEE+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX1677EEE	MAXIM	完全替代	Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter
MAX1677EEE+T	MAXIM	类似代替	Switching Regulator, Current-mode, 0.8A, 360kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.
MAX1677EEE-T	MAXIM	功能相似	Switching Regulator, Current-mode, 0.8A, 360kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.

与MAX1677EEE+相关器件

型号	品牌	获取价格	描述	数据表
MAX1677EEE+T	MAXIM	获取价格	Switching Regulator, Current-mode, 0.8A, 360kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.
MAX1677EEE-T	MAXIM	获取价格	Switching Regulator, Current-mode, 0.8A, 360kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.
MAX1677EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1677
MAX1678	MAXIM	获取价格	1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter
MAX1678	ADI	获取价格	1节至2节电池、低噪声、高效率、升压型DC-DC转换器
MAX1678EUA	MAXIM	获取价格	1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter
MAX1678EUA+	MAXIM	获取价格	Switching Regulator, Voltage-mode, 1A, 150kHz Switching Freq-Max, BICMOS, PDSO8, 1.10 MM H
MAX1678EUA+T	MAXIM	获取价格	Switching Regulator, Voltage-mode, 1A, 150kHz Switching Freq-Max, BICMOS, PDSO8, 1.10 MM H
MAX1678EUA-T	MAXIM	获取价格	Analog IC
MAX1678EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1678

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