參數(shù)資料
型號(hào)： TPS54350MPWPREP
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 7.2 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, PLASTIC, HTSSOP-16
文件頁(yè)數(shù)： 33/36頁(yè)
文件大小： 1057K
代理商： TPS54350MPWPREP
www.ti.com
PIN ASSIGNMENTS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VIN
UVLO
PWRGD
RT
SYNC
ENA
COMP
BOOT
PH
LSG
VBIAS
PGND
AGND
VSENSE
PWP PACKAGE
(TOP VIEW)
THERMAL
PAD
NOTE:
If there is not a Pin 1 indicator, turn device to enable
reading the symbol from left to right. Pin 1 is at the lower
left corner of the device.
TPS54350-EP
SGLS308 – OCTOBER 2005
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NO.
NAME
1, 2
VIN
Input supply voltage, 4.5 V to 20 V. Must bypass with a low ESR 10-F ceramic capacitor.
3
UVLO
Undervoltage lockout pin. Connecting an external resistive voltage divider from VIN to the pin overrides the
internal default VIN start and stop thresholds.
4
PWRGD
Power good output. Open drain output. A low on the pin indicates that the output is less than the desired output
voltage. There is an internal rising edge filter on the output of the PWRGD comparator.
5
RT
Frequency setting pin. Connect a resistor from RT to AGND to set the switching frequency. Connecting the RT pin
to ground or floating will set the frequency to an internally preselected frequency.
6
SYNC
Bidirectional synchronization I/O pin. SYNC pin is an output when the RT pin is floating or connected low. The
output is a falling edge signal out of phase with the rising edge of PH. SYNC may be used as an input to
synchronize to a system clock by connecting to a falling edge signal when an RT resistor is used. See the 180
°
Out of Phase Synchronization operation in the Application Information section.
7
ENA
Enable. Below 0.5 V, the device stops switching. Float pin to enable.
8
COMP
Error amplifier output. Connect frequency compensation network from COMP to VSENSE pins.
9
VSENSE
Inverting node error amplifier
10
AGND
Analog ground – internally connected to the sensitive analog ground circuitry. Connect to PGND and PowerPAD.
11
PGND
Power ground – noisy internal ground–return currents from the LSG driver output return through the PGND pin.
Connect to AGND and PowerPAD.
12
VBIAS
Internal 8-V bias voltage. A 1-F ceramic bypass capacitance is required on the VBIAS pin.
13
LSG
Gate drive for optional low side MOSFET. Connect gate of n-channel MOSFET for a higher efficiency synchronous
buck converter configuration. Otherwise, leave open and connect schottky diode from ground to PH pins.
14, 15
PH
Phase node – Connect to external L-C filter.
16
BOOT
Bootstrap capacitor for high side gate driver. Connect 0.1-F ceramic capacitor from BOOT to PH pins.
PowerPAD
PGND and AGND pins must be connected to the exposed pad for proper operation. See Figure 21 for an example
PCB layout.
6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54350MPWPREPG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Input,3A Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 制造商:Texas Instruments 功能描述:IC's
TPS54350PWPG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWPR 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 4.5 to 20V Inp 3A Step-Down Converter 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(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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