參數(shù)資料
型號(hào)： TL5001AQDRG4Q1
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 14/18頁(yè)
文件大?。?/td> 274K
代理商： TL5001AQDRG4Q1
OUTPUT TRANSISTOR
www.ti.com .............................................................................................................................................. SLVS603B – AUGUST 2005 – REVISED FEBRUARY 2009
The timer operates by charging an external capacitor (CSCP) connected between the SCP terminal and ground,
towards 2.5 V through a 185-k
resistor (RSCP). The circuit begins charging from an initial voltage of
approximately 185 mV and times out when the capacitor voltage reaches 1 V. The output of SCP comparator 2
then goes high, turns on Q2, and latches the timer circuit. The expression for setting the SCP time period is
derived from Equation 3:
VSCP = (2.5 – 0.185) (1 – e
–t/
τ) + 0.185
(3)
Where
τ = R
SCPCSCP
The end of the time-out period (tSCP) occurs when VSCP = 1 V. Solving for CSCP yields Equation 4:
CSCP = 12.46 × tSCP
(4)
Where
t is in seconds, C is in
F
tSCP must be much longer (generally 10 to 15 times) than the converter start-up period, or the converter will not
start.
The output of the TL5001A is an open-collector transistor with a maximum collector current rating of 21 mA and a
voltage rating of 51 V. The output is turned on under the following conditions: the oscillator triangle wave is lower
than both the DTC voltage and the error-amplifier output voltage, the UVLO circuit is inactive, and the
short-circuit protection circuit is inactive.
Copyright 2005–2009, Texas Instruments Incorporated
5
Product Folder Link(s): TL5001A-Q1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL5001AQDRQ1 功能描述:軟開關(guān) PWM 控制器 Auto Ctlg Puls Width Mod Contrl Circuit RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
TL5001AQDRQ1E4 制造商:Texas Instruments 功能描述:
TL5001CD 功能描述:軟開關(guān) PWM 控制器 PWM w/wide range RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
TL5001CD 制造商:Texas Instruments 功能描述:PWM CONTROL IC SMD 5001 SOIC8
TL5001CDG4 功能描述:軟開關(guān) PWM 控制器 w/Wide Input Voltage Range RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
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