參數(shù)資料
型號(hào)： TLE7368G
廠商： INFINEON TECHNOLOGIES AG
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： PLASTIC, SOP-36
文件頁(yè)數(shù)： 18/39頁(yè)
文件大?。?/td> 932K
代理商： TLE7368G
Data Sheet
25
Rev. 1.1, 2007-11-08
TLE7368
Detailed Internal Circuits Description
5.4
Power Up and Power Down Sequencing
In a supply system with multiple outputs the sequence of enabling the individual regulators is important. Especially
32-bit microcontrollers require a defined power up and power down sequencing. Figure 4 shows the details for
the power up and power down sequence of the TLE7368.
At power up, the first circuit block to be enabled is the charge pump as it is mandatory for the other circuits to
operate. With the charge pump reaching its nominal value, the Buck converter starts to power up its output. Also
the output voltage the linear regulators are enabled. The three linear regulators power up simultaneously. The 5 V
regulator acts as the master, the 3.3 V/2.6 V regulator and the 1.5 V regulator follow. As the 5 V regulator powers
up also the tracking regulators follow. The ramp if the increasing output voltage of each line is determined by the
connected output capacitance, the load current and the current limit of the regulator under consideration. In
addition an integrated supervision circuit ensures the following two conditions during power-up:
-0.3 V < (
V
Q_LDO1 - VQ_LDO2) < 3.1 V and
(1)
-0.3 V < (
V
Q_LDO2 - VFB_EXT)
(2)
The power down sequence is practically vice versa to the start up procedure. With the battery decreasing to zero
the charge pump and Buck regulator will stop to operate at the minimum battery threshold, the Buck output voltage
will fall down and so will the outputs of the linear regulators.
In the event where the device is disabled, EN_IGN = low and EN_uC = low, the charge pump, the Buck converter
and the linear regulators are disabled immediately.
The linear regulators’ outputs are not discharged actively in any case of power down. Diode circuitry (i.e. Schottky
diodes) might be necessary to avoid violation of certain microcontrollers’ sequencing requirements.
相關(guān)PDF資料
PDF描述
TLGE158P(Q) T-1 3/4 SINGLE COLOR LED, HIGH INTENSITY GREEN, 5 mm
TLHY4601BT21 T-1 SINGLE COLOR LED, YELLOW, 3 mm
TLMG3102 SINGLE COLOR LED, GREEN, 2.4 mm
TLMM-109-01-L-D-RA 18 CONTACT(S), MALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER
TLMM-109-01-L-D-SM 18 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLE7368GNUMA1 制造商:Infineon Technologies AG 功能描述:Micro Controller Supply 36-Pin DSO 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC PS SYSTEM MULTI VOLT PDSO-36
TLE7368GZT 制造商:Infineon Technologies AG 功能描述:Micro Controller Supply 36-Pin DSO T/R
TLE7469 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:Dual Low Drop Voltage Regulator Ultra low quiescent current consumption < 55 μA
TLE7469_08 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:Dual Low Drop Voltage Regulator Ultra low quiescent current consumption < 55 μA
TLE7469G V52 功能描述:低壓差穩(wěn)壓器 - LDO Dual LW Drop VLT REG 5/2.6/3.3V 215/200mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*