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參數(shù)資料
| 型號： | SG2525A |
| 廠商： | 意法半導體 |
| 英文描述： | REGULATING PULSE WIDTH MODULATORS |
| 中文描述： | 調控脈寬調制器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 117K |
| 代理商： | SG2525A |
SG2525A
SG3525A
REGULATING PULSE WIDTH MODULATORS
5.1V REFERENCETRIMMED TO
±
1%
.
100Hz TO 500KHz OSCILLATORRANGE
.
SEPARATEOSCILLATORSYNCTERMINAL
.
ADJUSTABLE DEADTIMECONTROL
.
INTERNALSOFT-START
.
PULSE-BY-PULSESHUTDOWN
.
INPUT UNDERVOLTAGE LOCKOUT WITH
HYSTERESIS
.
LATCHING PWM TO PREVENT MULTIPLE
PULSES
.
DUAL SOURCE/SINKOUTPUT DRIVERS
DESCRIPTION
The SG3525Aseriesof pulsewidthmodulatorinte-
grated circuits are designed to offer improved per-
formance and lowered external parts count when
used indesigningall typesof switchingpower sup-
plies. Theon-chip+ 5.1 V referenceistrimmedto
±
1 %andthe inputcommon-moderangeof theerror
amplifier includesthe referencevoltageeliminating
externalresistors. A sync input to the oscillator al-
lowsmultipleunitsto beslavedorasingleunittobe
synchronizedto an externalsystem clock. A single
resistorbetweentheC
T
andthedischargeterminals
provide a wide range of dead time ad-
justment.
Thesedevicesalsofeaturebuilt-insoft-startcircuitry
with only an external timing capacitor required. A
shutdownterminalcontrolsboththesoft-startcircu-
ity and the outputstages, providing instantaneous
.
8 TO 35 V OPERATION
turn off through the PWM latch with pulsed shut-
down,as wellassoft-startrecycle with longershut-
downcommands.Thesefunctionsarealsocontrol-
ledbyan undervoltagelockoutwhichkeepstheout-
puts off and the soft-start capacitor discharged for
sub-normal input voltages.This lockoutcircuitry in-
cludesapproximately500mVofhysteresisforjitter-
free operation. Another feature of thesePWM cir-
cuits is a latch following the comparator. Once a
PWM pulses has been terminated for any reason,
theoutputswill remainoffforthedurationof thepe-
riod. The latch is reset with each clock pulse. The
output stages are totem-pole designs capable of
sourcing or sinking in excess of 200 mA. The
SG3525AoutputstagefeaturesNORlogic,givinga
LOWoutputfor an OFF state.
DIP16
16(Narrow)
Type
Plastic DIP
SO16
SG2525A
SG2525AN
SG2525AP
SG3525A
SG3525AN
SG3525AP
PIN CONNECTIONS AND ORDERING NUMBERS
(top view)
June 2000
1/12
相關PDF資料 |
PDF描述 |
|---|---|
| SG2525AN | REGULATING PULSE WIDTH MODULATORS |
| SG2525AP | REGULATING PULSE WIDTH MODULATORS |
| SG3525A | REGULATING PULSE WIDTH MODULATOR |
| SG3525ADW | REGULATING PULSE WIDTH MODULATOR |
| SG3525AJ | REGULATING PULSE WIDTH MODULATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SG2525ADW | 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| SG2525ADWTANDR | 制造商:Microsemi Corporation 功能描述:Voltage Mode PWMs |
| SG2525AJ | 制造商:Microsemi Corporation 功能描述:Voltage Mode PWM Controller 400mA 16-Pin CDIP 制造商:Microsemi Corporation 功能描述:SG2525AJ - Bulk |
| SG2525AN | 功能描述:開關變換器、穩(wěn)壓器與控制器 Voltage Mode w/Sync RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SG2525AP | 功能描述:開關變換器、穩(wěn)壓器與控制器 Voltage Mode w/Sync RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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