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DS2770BE+T&R

Description
IC battery monitor 16-tssop
CategoryPower/power management    The power supply circuit   
File Size293KB,27 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

DS2770BE+T&R Overview

IC battery monitor 16-tssop

DS2770BE+T&R Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeTSSOP
package instructionTSSOP, TSSOP16,.25
Contacts16
Reach Compliance Codecompliant
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length5 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply3/5 V
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply current (Isup)0.12 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.7 V
Nominal supply voltage (Vsup)4.1 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width4.4 mm
Base Number Matches1
DS2770
Battery Monitor and
Charge Controller
www.maxim-ic.com
§
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
FEATURES
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
DESCRIPTION
The DS2770 battery monitor and charge controller performs several functions needed for thorough
battery maintenance. When used in conjunction with the host system’s processor, a battery-pack resident
DS2770 may be utilized for applications that include charging, remaining capacity estimation, safety
monitoring, and nonvolatile (NV) parametric storage.
Description continued on page 2.
1-Wire is a registered trademark of Dallas Semiconductor.
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