參數(shù)資料
型號(hào)： L5994
廠商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32
封裝： TQFP-32
文件頁(yè)數(shù)： 5/26頁(yè)
文件大?。?/td> 322K
代理商： L5994
Obsolete
Product(s)
- Obsolete
Product(s)
13/26
L5994 - L5994A
The 5V regulator is always active, even if both PWM regulators are disabled, as long as power is applied to the
chip.
The 2.5V reference voltage generator, provides comparison levels for threshold detection and device operation.
It is allowed to source up to 5mA to an external load from its buffered output, externally available through pin
VREF.
The reference voltage generator is active if at least one of the two RUNx signal is asserted.
If either PREG5 or VREF does not deliver the correct voltage, the device is shut down.
Figure 6. Controlled timing sequencies
t
RUN2
VOUT2
RUN1
t
VOUT1
t
CRST
PWROK1
t
RUN2
VOUT2
H2GATE
t
R2GATE
t
CRST
t
PWROK2
t
RUN1
t
VOUT1
t
H1GATE
t
R1GATE
a) TURN-ON TIMING SEQUENCE
b) SHUTDOWN TIMING SEQUENCE (1)
t
RUN2
VOUT2
H2GATE
t
R2GATE
t
CRST
t
PWROK2
t
RUN1
t
VOUT1
t
H1GATE
t
R1GATE
c) SHUTDOWN TIMING SEQUENCE (2)
t
H2GATE
t
R2GATE
t
VOUT2
t
PWROK
t
VOUT1
CRST
t
H1GATE
t
R1GATE
d) OVP TIMING SEQUENCE
PWROK2
t
PWROK1
t
PWROK1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L5994_02 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER
L5994A 功能描述:監(jiān)控電路 ADJT TRIPLE OUTPUT POWER SUPPLY CNTLR RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
L5995 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Current-Mode SMPS Controller
L5996 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU
L-59BL/1EGW 制造商:Kingbright Corporation 功能描述: 制造商:Kingbright Corporation 功能描述:LED 5MM RED/GREEN 40MCD/60MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/GREEN, 40MCD/60MCD 制造商:Kingbright Corporation 功能描述:LED, 5MM, RED/GREEN, 40MCD/60MCD, LED Colour:Red, Green, Height:7.24mm, Width:7. 制造商:Kingbright Corporation 功能描述:Red/grn r/a cbi,5mm,L-59BL/1EGW
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