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參數資料
| 型號： | L6728 |
| 廠商： | 意法半導體 |
| 英文描述： | Single phase PWM controller with PowerGOOD |
| 中文描述： | 單相PWM控制器與電源良好 |
| 文件頁數： | 1/32頁 |
| 文件大小： | 942K |
| 代理商： | L6728 |
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September 2007
Rev 2
1/32
1
L6728
Single phase PWM controller with PowerGOOD
Features
■
Flexible power supply from 5V to 12V
■
Power conversion input as low as 1.5V
■
0.8V internal reference
■
0.8% output voltage accuracy
■
High-Current integrated drivers
■
PowerGOOD output
■
Sensorless and programmable OCP across
Low-Side R
dsON
■
OV / UV protections
■
VSEN disconnection protection
■
Oscillator internally fixed at 300kHz
■
LS-LESS to manage pre-bias start-up
■
Adjustable output voltage
■
Disable function
■
Internal Soft-Start
■
VFQFPN 10 package
Applications
■
Memory and termination supply
■
Subsystem power supply (MCH, IOCH, PCI...)
■
CPU & DSP power supply
■
Distributed power supply
■
General DC / DC converters
Description
L6728 is a single-phase step-down controller with
integrated high-current drivers that provides
complete control logic and protection to realize in
a simple way general DC-DC converters by using
a compact VFQFPN 10 package.
Device flexibility allows managing conversions
with power input V
IN
as low as 1.5V and device
supply voltage ranging from 5V to 12V.
L6728 provides simple control loop with voltage
mode EA. The integrated 0.8V reference allows
regulating output voltages with ±0.8% accuracy
over line and temperature variations. Oscillator is
internally fixed to 300kHz.
L6728 provides programmable dual level over
current protection as well as over and under
voltage protection. Current information is
monitored across the Low-Side MOSFET RdsON
saving the use of expensive and space-
consuming sense resistors.
PGOOD output easily provides real-time
information on Output Voltage status, through
VSEN dedicated output monitor.
VFQFPN 10
Table 1.
Device summary
Order codes
Package
Packaging
L6728
VFQFPN 10
Tube
L6728TR
VFQFPN 10
Tape & Reel
www.st.com
相關PDF資料 |
PDF描述 |
|---|---|
| L6728TR | Single phase PWM controller with PowerGOOD |
| L6731B | Transistor; Type: Amplifiers/Bipolar; VCEO (V): 25; Ic (A): 1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: 0.5; Package: TO-92Mod |
| L6731BTR | Transistor; Type: Amplifiers/Bipolar; VCEO (V): -25; Ic (A): -1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: -0.5; Package: TO-92Mod |
| L6732 | Adjustable step-down controller with synchronous rectification |
| L6732TR | Adjustable step-down controller with synchronous rectification |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L6728_0706 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single phase PWM controller with Power Good |
| L6728A | 功能描述:電壓模式 PWM 控制器 Hi-Freq. singl-phase PWM controller w/Po RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| L6728AH | 功能描述:軟開關 PWM 控制器 Sgl Output 600 KHz DFPN-10 RoHS:否 制造商:Fairchild Semiconductor 輸出端數量: 輸出電流: 開關頻率: 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L6728AHTR | 功能描述:電流型 PWM 控制器 HIGH FREQ PWM CNTRL W/PO RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6728ATR | 功能描述:電壓模式 PWM 控制器 HIGH FREQ SINGLE PHASE PWM CNTRL RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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