Datasheet > MAX8719

MAX8719

更新时间： 2024-11-08 22:12:27

品牌	Logo	应用领域
美信 - MAXIM		稳压器电脑
页数	文件大小	规格书
10页	185K
描述
High-Voltage, Low-Power Linear Regulators for Notebook Computers

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MAX8719 数据手册

19-3495; Rev 0; 11/04

Hig h -Vo lt a g e , Lo w -P o w e r Lin e a r Re g u la t o rs fo r

No t e b o o k Co m p u t e rs

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

Fe a t u re s

The MAX8718/MAX8719 are micropower, 8-pin TDFN

line a r re g ula tors tha t s up p ly a lwa ys -on, ke e p -a live

p owe r to CMOS RAM, re a l-time c loc ks (RTC), a nd

microcontrollers in systems with high-voltage batteries.

The circuits consist of a 100mA linear regulator and a

power-good comparator (PGOOD) with fixed-output

delay. Key features include wide input voltage range,

low-dropout voltage, and low-quiescent supply current.

♦ 4V to 28V Input Range

♦ 18µA Quiescent Supply Current

♦ <3µA Shutdown Supply Current

♦ 100mA Output Current

♦ 3.3V or 5V, Pin-Selectable Output (MAX8718)

♦ Adjustable 1.24V to 28V Output (MAX8719)

♦ ±2% Output Accuracy

Despite a miserly 25µA (max) no-load quiescent cur-

rent, the MAX8718/MAX8719 have good line- and load-

tra ns ie nt re s p ons e a nd e xc e lle nt AC p owe r-s up p ly

rejection. They provide a clean fixed 5V or 3.3V output

(MAX8718), or a n a d jus ta b le 1.24V to 28V outp ut

(MAX8719), even when subjected to fast supply-volt-

age changes that occur during the switchover from bat-

te ry to AC-a d a p te r inp ut p owe r. The s p a c e -s a ving

TDFN package has excellent thermal characteristics

a nd tole ra te s up to 1951mW of p owe r d is s ip a tion.

Internal foldback current limiting and thermal shutdown

protect the regulator from overload and thermal faults.

♦ Thermal-Overload Protection

♦ Delayed Power-Good Output

♦ Thermally Enhanced 8-Pin TDFN Package

Ord e rin g In fo rm a t io n

OUTPUT

VOLTAGE

In addition to the main notebook-computer application,

these devices are useful in other low-power, high-volt-

PART

TEMP RANGE PIN-PACKAGE

age applications (4V < V < 28V) such as smart batter-

ies, current control loops, telecom emergency power,

and housekeeping power for off-line supplies.

8 TDFN 3mm x

3mm

MAX8718ETA -40°C to +85°C

MAX8719ETA -40°C to +85°C

3.3V/5V

8 TDFN 3mm x

3mm

Adjustable

The MAX8718/MAX8719 are available in a thermally

enhanced 3mm x 3mm, 8-lead TDFN package.

Ap p lic a t io n s

P in Co n fig u ra t io n

CMOS/RTC Backup Power

Microcontroller Power

Notebook Computers

TOP VIEW

Smart-Battery Packs

OUT

GND

PDAs and Handy-Terminals

Battery-Powered Systems

I.C.

MAX8718

MAX8719

5/3 (FB)

SHDN

PGOOD

TDFN

3mm × 3mm

() ARE FOR THE MAX8719.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...10

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与MAX8719相关器件

型号	品牌	获取价格	描述	数据表
MAX8719ETA	MAXIM	获取价格	High-Voltage, Low-Power Linear Regulators for Notebook Computers
MAX8719ETA+	ROCHESTER	获取价格	1.24 V-28V ADJUSTABLE POSITIVE REGULATOR, DSO8, 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN
MAX8719ETA+T	ROCHESTER	获取价格	1.24 V-28V ADJUSTABLE POSITIVE REGULATOR, DSO8, 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN
MAX8719ETA-T	MAXIM	获取价格	Adjustable Positive Standard Regulator, 1.24V Min, 28V Max, BICMOS, 3 X 3 MM, 0.80 MM HEIG
MAX871C	MAXIM	获取价格	Switched-Capacitor Voltage Inverters
MAX871C/D	MAXIM	获取价格	Switched-Capacitor Voltage Inverters
MAX871D	MAXIM	获取价格	Switched-Capacitor Voltage Inverters
MAX871EUK	MAXIM	获取价格	Switched-Capacitor Voltage Inverters
MAX871EUK	ROCHESTER	获取价格	SWITCHED CAPACITOR CONVERTER, 775kHz SWITCHING FREQ-MAX, PDSO5, SOT-23, 5 PIN
MAX871EUK+TG002	MAXIM	获取价格	Switched Capacitor Converter, 0.05A, CMOS, PDSO5, SOT-23, 5 PIN

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