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參數資料
| 型號： | 935269476115 |
| 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： | 11/20頁 |
| 文件大小： | 331K |
| 代理商： | 935269476115 |
Philips Semiconductors - PIP - SA57250-XX; CMOS switching regulator (PWM controlled)
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Product Information
SA57250-XX; CMOS
switching regulator
(PWM controlled)
Information as of 2002-08-07
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Download datasheet
Block diagram
Parametrics
topGeneral description
The SA57250-XX is a fully integrated DC/DC converter circuit built with CMOS technology. It uses a pulse
width modulation (PWM) controlled switching regulator circuit for low ripple and high efficiency (typically
83pct). The regulator has a high precision output with +-2.4pct accuracy. Few external components are
required. The SA57250 has an ON/OFF control that may be used to turn off the converter and conserve
power in battery powered applications. Power off supply current is no more than 0.5 mA. A built-in, soft-
start circuit reduces current inrush and voltage overshoot during start up. A low resistance CMOS power
FET, with 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 current-typically 17 uA
q
ON/OFF power control
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...50-XX;CMOSswitchingregulator(PWMcontrolled).htm (1 of 3) [Aug-28-2002 9:17:06 AM]
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| 935269478115 | 0.3 A SWITCHING REGULATOR, 57.5 kHz SWITCHING FREQ-MAX, PDSO5 |
| 935269482115 | 0.3 A SWITCHING REGULATOR, 57.5 kHz SWITCHING FREQ-MAX, PDSO5 |
| 935269477115 | 0.3 A SWITCHING REGULATOR, 57.5 kHz SWITCHING FREQ-MAX, PDSO5 |
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