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参数资料
| 型号： | L6995D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 270 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | MO-153-AC, TSSOP-20 |
| 文件页数： | 1/25页 |
| 文件大小： | 674K |
| 代理商： | L6995D |
1/25
L6995
April 2004
FEATURE
■ CONSTANT ON TIME TOPOLOGY ALLOWS
OPERATION WITH LOWER DUTY THAN
PWM TOPOLOGY
■ VERY FAST LOAD TRANSIENTS
■ 5V Vcc SUPPLY
■ 1.5V TO 28V 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
APPLICATIONS
■ I/O BUS FOR CPU CORE SUPPLY
■ NOTEBOOK COMPUTERS
■ NETWORKING DC-DC
■ DISTRIBUTED POWER
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.
TSSOP20
ORDERING NUMBERS: L6995D
L6995DTR
STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL
INPUT-OUTPUT CONVERSION
MINIMUM COMPONENT COUNT APPLICATION
SS
C
BOOT
OUT
C
SHDN
0.9V
Vo
L6995
28V
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6995DTR | 功能描述:DC/DC 开关控制器 1.5 to 28V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6995STR | 功能描述:DC/DC 开关控制器 1.5 to 28V Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6996 | 功能描述:DC/DC 开关控制器 Step-Down Contrllr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体: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 |
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