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參數(shù)資料
| 型號： | L6725TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | SOP-16 |
| 文件頁數(shù)： | 29/32頁 |
| 文件大?。?/td> | 812K |
| 代理商： | L6725TR |
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Pin connections and functions
L6725 - L6725A
6/32
3
Pin connections and functions
Figure 2.
Pins connection (top view)
Table 4.
Pin functions
Pin n°
Name
Function
1COMP
This pin is connected to the error amplifier output and is used to compensate the
voltage control feedback loop.
2
SS/INH
The soft-start time is programmed connecting an external capacitor from this pin to
GND. The internal current generator forces a current of 10
A through the capacitor.
When the voltage at this pin is lower than 0.5V the device is disabled.
3
EAREF
By setting the voltage at this pin is possible to select the internal/external reference
and the switching frequency:
VEAREF 0-80% of VCCDR -> External Reference/FSW = 250KHz
VEAREF = 80% - 95% of VCCDR -> VREF = 0.6V/FSW = 500KHz
VEAREF = 95% - 100% of VCCDR ->VREF = 0.6V/FSW = 250KHz
An internal clamp limits the maximum VEAREF at 2.5V (typ.). The device captures the
analog value present at this pin at the start-up when VCC meets the UVLO threshold.
4OCL
A resistor connected from this pin to ground sets the valley- current-limit. The valley
current is sensed through the low-side MOSFET(s). The internal current generator
sources a current of 100
A (I
OCL) from this pin to ground through the external resistor
(ROCL). The over-current threshold is given by the following equation:
1
2
3
4
5
6
11
12
SO16N
13
14
15
16
EAREF
HGATE
OCL
SS/INH
COMP
OCH
FB
SYNCH/NC
LGATE
PHASE
PGOOD/NC
7
10
SGND
VCC
VCCDR
BOOT
8
9
PGND
DSonLS
R
2
OCL
R
OCL
I
VALLEY
I
=
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6726 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726_08 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726_12 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:UNIVERSAL SPEECH CIRCUIT |
| L6726A | 功能描述:開關變換器、穩(wěn)壓器與控制器 Sngl phase PWM controller 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 |
| L6726A_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single phase PWM controller |
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