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參數(shù)資料
| 型號： | NCP1421 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 600 mA Sync-Rect PFM Step-Up DC-DC Converter with True-Cutoff and Ring-Killer(帶真切斷（true-cutoff）和振蕩消除（ring-killer）的600mA同步整流PFM步升DC-DC 轉(zhuǎn)換器) |
| 中文描述： | 600毫安同步整流PFM升壓型DC - DC轉(zhuǎn)換器與True - Cutoff和Ring殺手（帶真切斷（真實截止）和振蕩消除（環(huán)殺手）的600毫安同步整流PFM型步升的DC - DC轉(zhuǎn)換器） |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 116K |
| 代理商： | NCP1421 |
NCP1421
http://onsemi.com
3
PIN FUNCTION DESCRIPTIONS
Pin
Symbol
Description
1
FB
Output Voltage Feedback Input.
2
LBI/EN
LowBattery Detector Input and IC Enable. With this pin pulled down below 0.5 V, the device is disabled and
enters the shutdown mode.
3
LBO
OpenDrain LowBattery Detector Output. Output is LOW when V
LBI
is < 1.20 V. LBO is high impedance in
shutdown mode.
4
REF
1.20 V Reference Voltage Output, bypass with 1.0 F capacitor. If this pin is not loaded, bypass with 300 nF
capacitor; this pin can be loaded up to 2.5 mA @ V
OUT
= 3.3 V.
5
BAT
Battery input connection for internal ringkiller.
6
GND
Ground.
7
LX
NChannel and PChannel Power MOSFET drain connection.
8
OUT
Power Output. OUT also provides bootstrap power to the device.
MAXIMUM RATINGS
(T
C
= 25
°
C unless otherwise noted.)
Rating
Symbol
Value
Unit
Power Supply (Pin 8)
V
OUT
0.3, 5.5
V
Input/Output Pins (Pin 15, Pin 7)
V
IO
0.3, 5.5
V
Thermal Characteristics
Micro8 Plastic Package
Thermal Resistance JunctiontoAir
P
D
R
JA
520
240
mW
C/W
Operating Junction Temperature Range
T
J
40 to +150
C
Operating Ambient Temperature Range
T
A
40 to +85
C
Storage Temperature Range
T
stg
55 to +150
C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values
(not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage
may occur and reliability may be affected.
1. This device contains ESD protection and exceeds the following tests:
Human Body Model (HBM)
±
2.0 kV per JEDEC standard: JESD22A114. *Except OUT pin, which is 1k V.
Machine Model (MM)
±
200 V per JEDEC standard: JESD22A115. *Except OUT pin, which is 100 V.
2. The maximum package power dissipation limit must not be exceeded.
TJ(max)
TA
RJA
3. Latchup Current Maximum Rating:
±
150 mA per JEDEC standard: JESD78.
4. Moisture Sensitivity Level: MSL 1 per IPC/JEDEC standard: JSTD020A.
PD
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