参数资料
型号: LM3709YMBP-308
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA9
封装: MICRO, SMD-9
文件页数: 4/11页
文件大小: 200K
代理商: LM3709YMBP-308
Connection Diagram
Pin Description
Bump
No.
Name
Function
1MR
Manual-Reset input. When MR is less than V
MRT (Manual Reset Threshold)
RESET/RESET is engaged.
2V
CC
Power Supply input.
3
RESET
Reset Logic Output. Pulses low for t
RP (Reset Timeout Period) when triggered, and
stays low whenever V
CC is below the reset threshold or when MR is below VMRT.It
remains low for t
RP after either VCC rises above the reset threshold, or after MR input
rises above V
MRT (LM3708 only).
RESET
Reset Logic Output. RESET is the inverse of RESET (LM3709 only).
5
LLO
Low-Line Logic Output. Early Power-Fail warning output. Low when V
CC falls below
V
LLOT (Low-Line Output Threshold). This output can be used to generate an NMI
(Non-Maskable Interrupt) to provide an early warning of imminent power-failure.
6
GND
Ground reference for all signals.
7
WDI
Watchdog Input Transition Monitor: If no transition activity occurs for a period exceeding
t
WD (Watchdog Timeout Period), reset is engaged.
4, 8
NC
No Connect.
9
NC
No Connect. Bump 9 is test input used at factory only. Leave floating.
Top View
(looking from the coating side)
micro SMD 9 Bump Package
BPA09
DS200117-1
LM3708/LM3709
www.national.com
2
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