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參數(shù)資料
| 型號： | L6995S |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO20 |
| 封裝： | MO-153-AC, TSSOP-20 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大小： | 427K |
| 代理商： | L6995S |
1/26
L6995S
April 2004
1
FEATURES
■
CONSTANT ON TIME TOPOLOGY ALLOWS
OPERATION WITH LOWER DUTY THAN
PWM TOPOLOGY
■
VERY FAST LOAD TRANSIENTS
■
5V Vcc SUPPLY
■
1.5V TO 35V INPUT VOLTAGE RANGE
■
0.9V ±1% VREF
■
MINIMUM OUTPUT VOLTAGE AS LOW AS 0.9V
■
SELECTABLE SINKING MODE
■
LOSSLESS CURRENT LIMIT
■
REMOTE SENSING
■
OVP,UVP LATCHED PROTECTIONS
■
600
A TYP QUIESCENT CURRENT
■
POWER GOOD AND OVP SIGNALS
■
PULSE SKIPPING AT LIGHT LOADS
2
APPLICATIONS
■
I/O BUS FOR CPU CORE SUPPLY
■
NOTEBOOK COMPUTERS
■
NETWORKING DC-DC
■
DISTRIBUTED POWER
3
DESCRIPTION
The device is a step-down controller specifically de-
signed to provide extremely high efficiency conver-
sion, with losses current sensing tecnique.
The "constant on-time" topology assures fast load
transient response. The embedded "voltage feed-for-
ward" provides nearly constant switching frequency
operation.
An integrator can be introduced in the control loop to
reduce the static output voltage error.
The available remote sensing improve the static and
dynamic regulation recovering the wires voltage
drop. Pulse skipping technique reduces power con-
sumption at light load. Drivers current capability al-
lows output current in excess of 20A.
STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL
INPUT-OUTPUT CONVERSION
Figure 2. Minimum Component Count Application
SS
C
BOOT
OUT
C
SHDN
0.9V
Vo
L6995S
35V
Rin2
Rin1
CIN
RILIM
5V
VDR
INT
VFB
SS
OSC
BOOT
HGATE
PHASE
LGATE
PGND
GND
NOSKIP
ILIM
VSENSE
VREF
5V
VREF
C
L
BOOT
D
VCC
HS
LS
DS
REV. 1
Figure 1. Package
Table 1. Order Codes
Part Number
Package
L6995S
TSSOP20
L6995STR
Tape & Reel
TSSOP20
相關PDF資料 |
PDF描述 |
|---|---|
| LSP3124D33AE | 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM4040AIZ-2.5AMMOPACK | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PBCY3 |
| LM4040BIZ-10.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 10 V, PBCY3 |
| LM4040AIM3-2.5X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO3 |
| LM4040AIM3-5.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PDSO3 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6995STR | 功能描述:DC/DC 開關控制器 1.5 to 28V 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 |
| L6996 | 功能描述:DC/DC 開關控制器 Step-Down Contrllr 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 |
| L6996-1 | 制造商:Johanson 功能描述:TUNING ROTOR |
| L6996-13 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
| L6996-16 | 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT |
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