參數(shù)資料
型號(hào)： 935269501115
廠商： NXP SEMICONDUCTORS
元件分類： 穩(wěn)壓器
英文描述： 0.3 A SWITCHING CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO5
封裝： 1.50 MM, PLASTIC, MO-178, SOT-25, SOT-23, SOP-5
文件頁(yè)數(shù)： 12/21頁(yè)
文件大?。?/td> 301K
代理商： 935269501115
Philips Semiconductors
Product data
SA57255-XX
CMOS switching regulator (PWM controlled)
2
2001 Aug 01
853–2273 26807
GENERAL DESCRIPTION
The SA57255-XX is a highly integrated DC/DC converter circuit.
Efficient, compact power conversion is achieved with a pulse width
modulation (PWM) controlled switching regulator circuit designed
using CMOS processing. Low ripple and high efficiency of typically
83% are achieved through PWM control. The regulator has a high
precision output with
±2.4% accuracy. Few external components are
required.
The SA57255-XX has a built-in, soft-start circuit to reduce current
inrush and voltage overshoot during start up. The PWM control
circuit is designed to drive an external low resistance NPN bipolar
junction transistor (BJT). The DRIVE output provides typically 7 mA
at 100 kHz typical switching frequency to drive the BJT.
FEATURES
Operates from 0.7 to 9 V
DC
Ultra low operating supply current—typically 17 A
Uses external power BJT
High efficiency—typically 83%
High precision output—typically ±2.4%
Operating temperature range of –40 to +85 °C
Available output voltages: 2.0, 2.5, 2.8, 3.0, 3.3, 3.6, 5.0 V
DC
Available in SOT23-5 surface mount package
APPLICATIONS
Mobile and portable phones
Instrumentation and industrial products
Other portable, battery-operated equipment
SIMPLIFIED SYSTEM DIAGRAM
SL01508
1
VREF
5
4
VOUT
VBATT
SA57255-XX
GND
DRIVE
FB
PWM CONTROL
SOFT START
R
SA57255-XX as a boost (step-up) converter.
VDD 2
Figure 1. Simplified system diagram.
相關(guān)PDF資料
PDF描述
935269776118 SPECIALTY ANALOG CIRCUIT, PDSO8
935269775118 SPECIALTY ANALOG CIRCUIT, PDSO8
935269775112 SPECIALTY ANALOG CIRCUIT, PDSO8
935270142118 SPECIALTY ANALOG CIRCUIT, PDSO16
935270142112 SPECIALTY ANALOG CIRCUIT, PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
935269544557 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3
935269987557 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-1US1-V1.8 SUBBED TO 935269987557
935270713557 制造商:NXP Semiconductors 功能描述:SUB ONLY IC CHP
935270792551 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA
935270792557 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*