EEWORLDEEWORLDEEWORLD

Part Number

Search

LT3650-4.1

Description
High Voltage 2 Amp Monolithic Li-Ion Battery Charger
File Size207KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LT3650-4.1 Overview

High Voltage 2 Amp Monolithic Li-Ion Battery Charger

LT3650-4.1/LT3650-4.2
High Voltage 2 Amp
Monolithic Li-Ion Battery Charger
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LT
®
3650 is a complete monolithic single-cell Li-Ion/
Polymer battery charger that operates over a 4.75V to
32V input voltage range (7.5V minimum start-up voltage).
The LT3650 provides a constant-current/constant-volt-
age charge characteristic, with maximum charge current
externally programmable up to 2A, set using an external
current sense resistor. A precondition feature trickle-
charges a low voltage battery, and bad-battery detection
provides a signal and suspends charging if a battery does
not respond to preconditioning.
The LT3650 can be configured to terminate charging when
charge current falls to C/10, or one-tenth the programmed
maximum current. Once charging is terminated, the LT3650
enters a low current (85μA) standby mode. An auto-restart
feature starts a new charging cycle if the battery voltage
drops 2.5% from the float voltage, or if a new battery is
inserted into a charging system.
The LT3650 contains a user-programmable internal safety
timer (typically set to a three hour full cycle time). The IC
can be configured to use this internal timer if a time-based
termination scheme is desired in which charging can con-
tinue below C/10 until a desired time is reached.
The LT3650 is available in a low profile (0.75mm) 3mm
×
3mm 12-pin DFN and 12-pin MSOP packages.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Wide Input Voltage Range: 4.75V to 32V
(40V Absolute Maximum)
Programmable Charge Current Up to 2A
User-Selectable Termination: C/10 or Onboard
Termination Timer
Dynamic Charge Rate Programming/Soft-Start Pin
Programmable Input Current Limit
No V
IN
Blocking Diode Required
1MHz Fixed Frequency
Average Current Mode Control
0.5% Float Voltage Accuracy
5% Charge Current Accuracy
2.5% C/10 Detection Accuracy
NTC Resistor Temperature Monitor
Auto-Recharge at 97.5% Float Voltage
Auto-Precondition at <70% Float Voltage
Bad-Battery Detection with Auto-Reset
Binary Coded Open-Collector Status Pins
3mm
×
3mm DFN-12 or MSOP-12 Package
APPLICATIONS
n
n
n
n
Industrial Handheld Instruments
12V to 24V Automotive and Heavy Equipment
Desktop Cradle Chargers
Notebook Computers
TYPICAL APPLICATION
7.5V to 32V Single-Cell Li-Ion 2A Charger
CMSH3-40MA
1μF
CLP
LT3650-4.2
SHDN
CHRG
FAULT
TIMER
BAT
NTC
RNG/SS
10μF
SENSE
0.05Ω
BOOST
CMPSH1-4
6.8μH
EFFICIENCY (%)
V
IN
7.5V to 32V
10μF
V
IN
SW
90
100
V
BAT
and Efficiency vs I
BAT
V
BAT
4.20
V
IN
= 12V
80
V
IN
= 20V
4.15
V
BAT
(V)
4.10
70
+
Li-ION
BATTERY
3650 TA01a
4.05
60
0
0.5
1
I
BAT
(A)
1.5
2
365042 TA01b
36504142fb
1
2015 recommended books for programmers
[b][size=4][color=#0000ff]2015 Programmer Recommended Book List[/color][/size][/b][align=left][size=5][color=#ff0000] Programming Life[/color][/size][/align] [align=left][color=#14191e] How did the wo...
tiankai001 Download Centre
Verilog Golden Reference Guide
Verilog Golden Reference Guide...
douglas816 Embedded System
I can't find any information about these two chips.
From searching online, I found that it is a driver optocoupler used in inverters, but I can't find the relevant datasheet. The content above is very simple A T350 1020. This device is in TO-220 packag...
呜呼哀哉 Analog electronics
GTM900-C Wireless Module Product Overview V1.01_0520
GTM900-C Wireless Module Product Overview V1.01_0520...
zhaojun_xf DIY/Open Source Hardware
【GD32F350 Sharing】【Part 3】Writing OLED Driver
Next, we will start writing the first peripheral program. This work is a simple pedometer design. First, we need to use OLED as the display. OLED is written using analog IIC program. The reason for us...
hanyeguxingwo GD32 MCU
uCOS51 transplant experience
I'm going to upload something today, it was written by Yang Yi from the System Integration Development Department of Julong Company....
xingkong911 Real-time operating system RTOS

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 346  1628  54  2376  1714  7  33  2  48  35 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号