MAX1673

更新时间： 2024-09-30 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		泵
页数	文件大小	规格书
8页	83K
描述
Regulated, 125mA-Output, Charge-Pump DC-DC Inverter

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MAX1673 数据手册

19-1334; Rev 0; 1/98

Re g u la t e d , 1 2 5 m A-Ou t p u t ,

Ch a rg e -P u m p DC-DC In ve rt e r

MAX1673

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

____________________________Fe a t u re s

The MAX1673 charge-pump inverter provides a low-

cost, compact means of generating a regulated nega-

tive output from a positive input at up to 125mA. It

requires only three small capacitors, and only two resis-

tors to set its output voltage. The input range is 2V to

♦ Regulated Negative Output Voltage

(up to -1 x V )

♦ 125mA Output Current

♦ 35µA Quiescent Supply Current

5.5V. The regulated output can be set from 0V to -V in

(Skip-mode regulation)

Skip regulation mode or -1.5V to -V in Linear (LIN)

♦ 350kHz Fixed-Frequency, Low-Noise Output

regulation mode.

(Linear-mode regulation)

In Skip mode, the MAX1673 regulates by varying its

switching frequency as a function of load current. This

On-De ma nd ™ s witc hing g ive s the MAX1673 two

advantages: very small capacitors and very low quies-

cent supply current. At heavy loads, it transfers energy

from the inp ut to the outp ut b y s witc hing a t up to

350kHz. It switches more slowly at light loads, using

only 35µA quiescent supply current.

♦ 2V to 5.5V Input Range

♦ 1µA Logic-Controlled Shutdown

In Linear mode, the MAX1673 switches at a constant

350kHz a t a ll loa d s a nd re g ula te s b y c ontrolling

the current-path resistance. This provides constant-

frequency ripple, which is easily filtered for low-noise

applications.

_______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

This device also features a 1µA logic-controlled shut-

down mode and is available in a standard 8-pin SO

package. For a device that delivers about 10mA and

fits in a smaller package, refer to the MAX868.

MAX1673ESA

-40°C to +85°C

8 SO

________________________Ap p lic a t io n s

Hard Disk Drives

Camcorders

Measurement Instruments

Modems

Analog Signal-Processing

Applications

Digital Cameras

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

INPUT 2V TO 5.5V

___________________P in Co n fig u ra t io n

REGULATED

NEGATIVE

OUTPUT

TOP VIEW

OFF

SHDN

(UP TO -1 x V ,

UP TO 125mA)

LIN/SKIP

CAP+

MAX1673

CAP+

CAP-

OUT

GND

MAX1673

CAP-

LIN/SKIP GND

SHDN

OUT

On-Demand™ is a trademark of Maxim Integrated Products.

________________________________________________________________ Maxim Integrated Products

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

For small orders, phone 408-737-7600 ext. 3468.

12 3 4 5 6 7 8

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与MAX1673相关器件

型号	品牌	获取价格	描述	数据表
MAX16731	ADI	获取价格	30A、1.5 MHz、2.7V至16V降压型开关稳压器
MAX1673ESA	MAXIM	获取价格	Regulated, 125mA-Output, Charge-Pump DC-DC Inverter
MAX1673ESA+	MAXIM	获取价格	Switched Capacitor Regulator, 0.125A, 515kHz Switching Freq-Max, PDSO8, SO-8
MAX1673ESA+T	MAXIM	获取价格	Switched Capacitor Regulator, 0.125A, 515kHz Switching Freq-Max, PDSO8, SO-8
MAX1673ESA-T	MAXIM	获取价格	Switched Capacitor Regulator, 0.125A, 515kHz Switching Freq-Max, PDSO8, SO-8
MAX1674	MAXIM	获取价格	High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1674	ADI	获取价格	高效率、低电源电流、紧凑的、升压型DC-DC转换器
MAX1674/MAX1675/MAX1676	MAXIM	获取价格	High-Efficiency Low-Supply-Current Compact Step-Up DC-
MAX1674EUA	MAXIM	获取价格	High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters
MAX1674EUA+T	MAXIM	获取价格	Switching Regulator, Voltage-mode, 1.5A, 500kHz Switching Freq-Max, PDSO8, UMAX-8

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