LTC1473L DDual Low Voltage PowerPath Switch Driver
The LTC®1473L provides reliable and efficient switching between two DC power sources. This device drives two external sets of back-to-back N-channel MOSFET switches to route power to the input of a low voltage system. An internal boost regulator provides the voltage to fully enhance the logic-level N-channel MOSFET switches while an internal undervoltage lock-out circuit keeps the system alive down to 2.8V. The LTC1473L senses current to limit inrush between the batteries and the system supply capacitor during switch-over transitions or during fault conditions. A user-programmable timer monitors the time the MOSFET switches are in current limit and latches them off when the programmed time is exceeded. A unique “2-diode” logic mode ensures system start-up regardless of which input receives power first
产品特点 Features
- Power Path Management for Systems with Multiple DC Sources
- Switches and Isolates Sources from 3.3V to 10V
- All N-Channel Switching to Reduce Power Losses and System Cost
- Built-In Step-Up Regulator for N-Channel Gate Drive
- Capacitor Inrush and Short-Circuit Current Limited
- User-Programmable Timer Prevents Overdissipation During Current Limiting
- Undervoltage Lockout Prevents Operation with Low Inputs
- Small Footprint: 16-Pin Narrow SSOP
|
应用
- Portable Computers
- Portable Instruments
- Fault Tolerant Computers
- Battery-Backup Systems
- 3.3V/5V Power Management
|
LTC1473L 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LTC1473CGN |
SSOP |
16 |
C |
$4.40 |
$3.55 |
| LTC1473CGN#PBF |
SSOP |
16 |
C |
$4.40 |
$3.55 |
| LTC1473CGN#TR |
SSOP |
16 |
C |
|
$3.61 |
| LTC1473CGN#TRPBF |
SSOP |
16 |
C |
|
$3.61 |
| LTC1473IGN |
SSOP |
16 |
I |
$5.30 |
$4.30 |
| LTC1473IGN#PBF |
SSOP |
16 |
I |
$5.30 |
$4.30 |
| LTC1473IGN#TR |
SSOP |
16 |
I |
|
$4.36 |
| LTC1473IGN#TRPBF |
SSOP |
16 |
I |
|
$4.36 |
| LTC1473LCGN |
SSOP |
16 |
C |
$4.40 |
$3.55 |
| LTC1473LCGN#PBF |
SSOP |
16 |
C |
$4.40 |
$3.55 |
| LTC1473LCGN#TR |
SSOP |
16 |
C |
|
$3.61 |
| LTC1473LCGN#TRPBF |
SSOP |
16 |
C |
|
$3.61 |
LTC1473L 数据手册及相关资料下载
- 数据手册(英文) : LTC1473L - Dual Low Voltage PowerPath Switch Driver.PDF
- 应用指南 (英文) : AN84 - linear Technology Magazine Circuit Collection, Volume IV .PDF
- 可靠性数据 : R336 Reliability Data .PDF
