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參數(shù)資料
| 型號： | MIC79050-4.2BM |
| 廠商： | MICREL INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Simple Lithium-Ion Battery Charger Preliminary Information |
| 中文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 103K |
| 代理商： | MIC79050-4.2BM |
June 2000
1
MIC79050
MIC79050
Micrel
Typical Applications
Li-Ion
Cell
4.2V
±
0.75% Over Temp
IN
BAT
GND
MIC79050-4.2BS
Regulated or
unregulated
wall adapter
Simplest Battery Charging Solution
4.2V
±
0.75%
Li-Ion
Cell
External PWM*
IN
EN
BAT
FB
GND
MIC79050-4.2BMM
*See Applications Information
Regulated or
unregulated
wall adapter
Pulse-Charging Application
MIC79050
Simple Lithium-Ion Battery Charger
Preliminary Information
General Description
The MIC79050 is a simple single-cell lithium-ion battery
charger. It includes an on-chip pass transistor for high preci-
sion charging. Featuring ultrahigh precision (+0.75% over the
Li-ion battery charging temperature range) and “zero” off
mode current, the MIC79050 provides a very simple, cost
effective solution for charging lithium-ion battery.
Other features of the MIC79050 include current limit and
thermal shutdown protection. In the event the input voltage to
the charger is disconnected, the MIC79050 also provides
minimal reverse-current and reversed-battery protection.
The MIC79050 is a fixed 4.2V device and comes in the
thermally-enhanced MSO-8, SO-8, and SOT-223 packages.
The 8-pin versions also come equipped with enable and
feedback inputs. All versions are specified over the tempera-
ture range of –40
°
C to +125
°
C.
Features
High accuracy charge voltage:
±
0.75% over -5
°
C to + 60
°
C (Li-ion charging
temperature range)
“Zero” off-mode current
10
μ
A reverse leakage
Ultralow 380mV dropout at 500mA
Wide input voltage range
Logic controlled enable input (8-pin devices only)
Thermal shutdown and current limit protection
Power MSOP-8, Power SOP-8, and SOT-223
Pulse charging capability
Applications
Li-ion battery charger
Celluar phones
Palmtop computers
PDAs
Self charging battery packs
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Ordering Information
Part Number
MIC79050-4.2BS
MIC79050-4.2BM
MIC79050-4.2BMM
Voltage
4.2V
4.2V
4.2V
Junct. Temp. Range
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
Package
SOT-223
SOP-8
MSOP-8
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| MIC79110-4.2YML TR | 功能描述:電池管理 1.2A Li-Ion Linear Battery Charger(Lead Free) RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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