- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄43901 > L6997D (STMICROELECTRONICS) SWITCHING CONTROLLER, PDSO20 PDF資料下載
參數(shù)資料
| 型號： | L6997D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO20 |
| 封裝： | MO-153AC, TSSOP-20 |
| 文件頁數(shù)： | 1/30頁 |
| 文件大?。?/td> | 591K |
| 代理商： | L6997D |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
1/30
L6997
May 2004
1
FEATURES
■
FROM 3V TO 5.5V VCC RANGE
■
MINIMUM OUTPUT VOLTAGE AS LOW AS
0.6V
■
1V TO 28V INPUT VOLTAGE RANGE
■
CONSTANT ON TIME TOPOLOGY
■
VERY FAST LOAD TRANSIENTS
■
0.6V, ±1% VREF
■
SELECTABLE SINKING MODE
■
LOSSLESS CURRENT LIMIT, AVAILABLE
ALSO IN SINKING MODE
■
REMOTE SENSING
■
OVP,UVP LATCHED PROTECTIONS
■
600
A TYP QUIESCENT CURRENT
■
POWER GOOD AND OVP SIGNALS
■
PULSE SKIPPING AT LIGTH LOADS
■
94% EFFICIENCY FROM 3.3V TO 2.5V
2
APPLICATIONS
■
NETWORKING
■
DC/DC MODULES
■
DISTRIBUTED POWER
■
MOBILE APPLICATIONS
■
CHIP SET, CPU, DSP AND MEMORIES
SUPPLY
3
DESCRIPTION
The device is a high efficient solution for networking
dc/dc modules and mobile applications compatible
with 3.3V bus and 5V bus.
It's able to regulate an output voltage as low as 0.6V.
The constant on time topology assures fast load tran-
sient response. The embedded voltage feed-forward
provides nearly constant switching frequency opera-
tion in spite of a wide input voltage range.
An integrator can be introduced in the control loop to
reduce the static output voltage error.
The remote sensing improves the static and dynamic
regulation, recovering the wires voltage drop.
Pulse skipping technique reduces power consump-
tion at light loads. Drivers current capability allows
output currents in excess of 20A.
STEP DOWN CONTROLLER
FOR LOW VOLTAGE OPERATIONS
Figure 2. Minimum Component Count Application
L6997
SHDN
3.3V
INT
VDR
VSENSE
OVP
Vref
GND
GNDSENSE
VFB
VCC
SS
OSC
0.6V
PGOOD
PGND
LGATE
PHASE
HGATE
ILIM
BOOT
Rilim
Css
Cvref
HS
LS
Rin1
Rin2
Cin
Cboot
Dboot
L
Cout
Ro1
Ro2
DS
REV. 4
Figure 1. Package
Table 1. Order Codes
Part Number
Package
L6997D
TSSOP20
L6997DTR
Tape & Reel
TSSOP20
Obsolete
Product(s)
- Obsolete
Product(s)
相關PDF資料 |
PDF描述 |
|---|---|
| L6997DTR | SWITCHING CONTROLLER, PDSO20 |
| L7200 | DISK DRIVE MOTOR CONTROLLER, 2.6 A, PQFP64 |
| L7250 | VOICE COIL MOTOR CONTROLLER, PQFP64 |
| L7980A | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7980 | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6997DTR | 功能描述:DC/DC 開關控制器 Adjustable Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6997S | 功能描述:DC/DC 開關控制器 STEP DOWN CONTROLLER Lo Vltg Operations RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6997STR | 功能描述:DC/DC 開關控制器 3.0 to 5.5V Step-Dwn RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6998-0 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6998-1 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
發(fā)布緊急采購，3分鐘左右您將得到回復。