參數(shù)資料
型號(hào)： TC3827-4.2VUA
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： MSOP-8
文件頁(yè)數(shù)： 1/10頁(yè)
文件大?。?/td> 132K
代理商： TC3827-4.2VUA
TC3827
TC3827-2 12/12/00
2001 Microchip Technology Inc.
DS21558A
Lithium-Ion Battery Charger
FEATURES
s Low Power Dissipation
s Shutdown Current: 1
A (Typical)
s Space-Saving 8-Pin MSOP Package
s No Inductor Required
s 1% Overall System Accuracy
s Charge Current Monitor Output
s Charge Status Indicator Output
s Foldback Current Limiting
s –20
°C to +85°C Ambient Operating
Temperature Range
TYPICAL APPLICATIONS
s PDAs
s Cradle Chargers
s Li-Ion Battery Chargers
s Desktop Computers
s Hand-Held Instruments
s Cellular Telephones
s Battery Operated Devices
s Self-Charging Battery Packs
GENERAL DESCRIPTION
The TC3827 is a battery charger controller for a single
cell Li-Ion battery. Using an external PMOS transistor, safe
and fast charging of a single Li-Ion cell is accomplished.
Features include over-current foldback, charge current
monitor, and charge status LED indicator output. An overall
system accuracy of 1% ensures that the cell capacity is fully
utilized without cycle life degradation. An external resistor
sets charge current.
The TC3827 operates with an input voltage range from
4.5V to 5.5V. It is specified over the ambient operating
temperature range of –20
°C to +85°C and is available in a
space-saving 8-Pin MSOP.
ORDERING INFORMATION
Temperature
Part No.
Package
Range
TC3827-4.1VUA
8-Pin MSOP
–20
°C to +85°C
TC3827-4.2VUA
8-Pin MSOP
–20
°C to +85°C
8-Pin MSOP
PIN CONFIGURATION
GND
VDRV
VSNS
VIN
MODE
IMON
VOUT
SHDN 1
2
3
4
8
7
6
5
TC3827
RSENSE
NDP6020P
PMOS
+5 V
IN
V
SNS
V
DRV
GND
V
IN
V
OUT
SHDN
IMON
MODE
LED
10
F
Controller
TC3827
Li-Ion
22
F
+
–
SHDN
MODE
IMON
FUNCTIONAL BLOCK DIAGRAM
TYPICAL APPLICATION CIRCUIT
E/A
SHDN
VOUT
GND
V
VIN
VSNS
VREF
+
–
E/A
+
–
C/A
+
–
CONTROL
BLOCK
K
IMON
MODE
TC3827
DRV
Figure 1. TC3827 Typical Application Circuit
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