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參數資料
| 型號： | 935269491115 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.3 A SWITCHING REGULATOR, 57.5 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | 1.50 MM, PLASTIC, MO-178, SOT-25, SOT-23, SOP-5 |
| 文件頁數： | 11/21頁 |
| 文件大小： | 333K |
| 代理商： | 935269491115 |
Philips Semiconductors - PIP - SA57254-XX; CMOS switching regulator (PWM controlled)
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Product Information
SA57254-XX; CMOS
switching regulator
(PWM controlled)
Information as of 2002-08-07
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Download datasheet
Block diagram
Parametrics
topGeneral description
The SA57254-XX is a fully 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 83pct are achieved through PWM control.
The regulator has a high precision output with +-2.4pct accuracy. Few external components are required.
The SA57254-XX has a built-in soft-start circuit which reduces inrush current and voltage overshoot during
start-up. A low resistance CMOS power FET, which has low leakage current and low parasitic capacitance,
is on-chip.
topFeatures
q
Operates from 0.7 to 9 V DC
q
Ultra low operating supply currenttypically 17 mA
q
Built-in power FET
q
High efficiency-typically 83pct
q
High precision output-typically +-2.4pct
q
Operating temperature range of -40 to +85 Cel
q
Available output voltages: 2.0, 2.5, 2.8, 3.0, 3.3, 3.6, 5.0 V DC
q
Available in SOT23-5 surface mount package
topApplications
q
Mobile and portable phones
q
Instrumentation and industrial products
q
Other portable, battery-operated equipment
file:///G|/imaging/BITTING/cpl_IMAGES/PhilipsSe...54-XX;CMOSswitchingregulator(PWMcontrolled).htm (1 of 3) [Aug-28-2002 9:21:24 AM]
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