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参数资料
| 型号： | L6910TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SO-16 |
| 文件页数： | 1/30页 |
| 文件大小： | 763K |
| 代理商： | L6910TR |
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L6910
L6910A
May 2005
1
FEATURES
■ OPERATING SUPPLY VOLTAGE FROM 5V
TO 12V BUSES
■ UP TO 1.3A GATE CURRENT CAPABILITY
■ ADJUSTABLE OUTPUT VOLTAGE
■ N-INVERTING E/A INPUT AVAILABLE
■ 0.9V ±1.5% VOLTAGE REFERENCE
■ VOLTAGE MODE PWM CONTROL
■ VERY FAST LOAD TRANSIENT RESPONSE
■ 0% TO 100% DUTY CYCLE
■ POWER GOOD OUTPUT
■ OVERVOLTAGE PROTECTION
■ HICCUP OVERCURRENT PROTECTION
■ 200kHz INTERNAL OSCILLATOR
■ OSCILLATOR EXTERNALLY ADJUSTABLE
FROM 50kHz TO 1MHz
■ SOFT START AND INHIBIT
■ PACKAGES: SO-16 & HTSSOP16
2
APPLICATIONS
■ SUPPLY FOR MEMORIES AND TERMI-
NATIONS
■ COMPUTER ADD-ON CARDS
■ LOW VOLTAGE DISTRIBUTED DC-DC
■ MAG-AMP REPLACEMENT
3
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 divider.
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.
ADJUSTABLE STEP DOWN CONTROLLER
WITH SYNCHRONOUS RECTIFICATION
Figure 2. Block Diagram
MONITOR
PROTECTION
& REF
OSC
E/A
PWM
UGATE
BOOT
LGATE
PGND
GND
VFB
SS
OSC
EAREF
RT
VREF
PGOOD
VCC
OCSET
COMP
300K
+
-
+
VO
Vin 5V to 12V
D03IN1509
Rev. 9
Figure 1. Packages
Table 1. Order Codes
Part Number
Package
L6910
SO-16
L6910TR
SO-16 in Tape & Reel
L6910A
HTSSOP16
L6910ATR
HTSSOP16 in Tape & Reel
SO-16 (Narrow)
HTSSOP16 (Exposed Pad)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6911 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR |
| L6911A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
| L6911B | 制造商:STMicroelectronics 功能描述: |
| L6911C | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER 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 |
| L6911CTR | 功能描述:DC/DC 开关控制器 5B PROGRAMMABLE STEP DOWN CONTROLLER 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 |
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