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參數資料
| 型號： | L6910TR |
| 廠商： | 意法半導體 |
| 英文描述： | ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION |
| 中文描述： | 可調降壓控制器采用同步整流 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 453K |
| 代理商： | L6910TR |
1/21
L6910
L6910A
July 2003
FEATURE
I
OPERATING SUPPLY VOLTAGE FROM 5V
TO 12V BUSES
I
UP TO 1.3A GATE CURRENT CAPABILITY
I
ADJUSTABLE OUTPUT VOLTAGE
I
N-INVERTING E/A INPUT AVAILABLE
I
0.9V ±1.5% VOLTAGE REFERENCE
I
VOLTAGE MODE PWM CONTROL
I
VERY FAST LOAD TRANSIENT RESPONSE
I
0% TO 100% DUTY CYCLE
I
POWER GOOD OUTPUT
I
OVERVOLTAGE PROTECTION
I
HICCUP OVERCURRENT PROTECTION
I
200kHz INTERNAL OSCILLATOR
I
OSCILLATOR EXTERNALLY ADJUSTABLE
FROM 50kHz TO 1MHz
I
SOFT START AND INHIBIT
I
PACKAGES: SO-16 & HTSSOP16
APPLICATIONS
I
SUPPLY FOR MEMORIES AND TERMI-
NATIONS
I
COMPUTER ADD-ON CARDS
I
LOW VOLTAGE DISTRIBUTED DC-DC
I
MAG-AMP REPLACEMENT
DESCRIPTION
The device is a pwm controller for high performance
dc-dc conversion from 3.3V, 5V and 12V buses.
The output voltage is adjustable down to 0.9V; higher
voltages can be obtained with an external voltage di-
vider.
High peak current gate drivers provide for fast switch-
ing to the external power section, and the output
current can be in excess of 20A.
The device assures protections against load overcur-
rent and overvoltage. An internal crowbar is also pro-
vided turning on the low side mosfet as long as the
over-voltage is detected. In case of over-current de-
tection, the soft start capacitor is discharged and the
system works in HICCUP mode.
SO-16 (Narrow)
HTSSOP16 (Exposed Pad)
ORDERING NUMBERS:
(SO-16)
L6910A
L6910TR (Tape & Reel)
L6910
(HTSSOP16)
L6910ATR (Tape & Reel)
ADJUSTABLE STEP DOWN CONTROLLER
WITH SYNCHRONOUS RECTIFICATION
BLOCK DIAGRAM
L6910
PGND
PHASE
GND
VFB
LGATE
BOOT
UGATE
VCC
OCSET
Vin 5V to12V
Vo
PGOOD
COMP
SS
Monitor
Protection and Ref
OSC
+
-
+
-
E/A
PWM
EAREF
OSC
VREF
300k
R
T
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相關代理商/技術參數 |
參數描述 |
|---|---|
| L6911 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR |
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| L6911B | 制造商:STMicroelectronics 功能描述: |
| L6911C | 功能描述:DC/DC 開關控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER 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 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6911CTR | 功能描述:DC/DC 開關控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER 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 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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