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DS2770AE/R

Description
Battery Monitor and Charge Controller
File Size268KB,27 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
Download Datasheet View All

DS2770AE/R Overview

Battery Monitor and Charge Controller

DS2770
Battery Monitor and Charge Controller
www.maxim-ic.com
FEATURES
§
§
§
Integrated charge controller supporting both
rechargeable lithium and NiMH battery
technologies
Available in two configurations:
– Internal 25mW current-sense resistor
– External user-selectable sense resistor
Current measurement:
– 15-bit bidirectional measurement
– Internal sense resistor configuration:
62.5mA LSB and
±2A
dynamic range
– External sense resistor configuration:
1.56mV LSB and
±51.2mV
dynamic range
Current accumulation
– Internal sense resistor: 0.25mAh LSB
– External sense resistor: 6.25mVh LSB
Voltage measurement with 4.88mV resolution
Temperature measurement using integrated
sensor with 0.125°C resolution
40 bytes of lockable EEPROM
16 bytes of general-purpose SRAM
42-day timer
Dallas 1-Wire
â
interface with 64-bit ID
1.8V logic levels
Low power consumption:
– Active current:
80mA typical
– Sleep current:
0.5mA typical
PIN ASSIGNMENT
UV
CC
VCH
SNS
SNS
SNS
NC
IS2
1
2
3
2
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
VIN
DQ
VSS
VSS
VSS
NC
IS1
DS2770
16-Pin TSSOP
§
§
§
§
§
§
§
§
§
PIN DESCRIPTION
UV
CC
VCH
SNS
IS2
IS1
VSS
DQ
VIN
VDD
NC
– Battery Undervoltage Detect Output
– Charge Control Output
– Charge Supply Input
– Sense Resistor Connection
– Current-Sense Input
– Current-Sense Input
– Device Ground
– Data Input/Output
– Voltage Sense Input
– Power Supply Input
– No Connect
ORDERING INFORMATION
ORDERING NUMBER
DS2770AE
DS2770BE
DS2770AE/T&R
DS2770BE/T&R
DS2770AE-025
DS2770BE-025
DS2770AE-025/T&R
DS2770BE-025/T&R
MARKING
D2770EA
D2770EB
D2770EA
D2770EB
2770EAR
2770EBR
2770EAR
2770EBR
DESCRIPTION
TSSOP, Ext. Sense Res., 4.1V Charge Voltage
TSSOP, Ext. Sense Res., 4.2V Charge Voltage
DS2770AE on Tape & Reel
DS2770BE on Tape & Reel
TSSOP, 25mW Sense Res., 4.1V Charge Voltage
TSSOP, 25mW Sense Res., 4.2V Charge Voltage
DS2770AE-025 on Tape & Reel
DS2770BE-025 on Tape & Reel
041202
1-Wire is a registered trademark of Dallas Semiconductor.
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