BQ2023
器件描述：SINGLE-WIRE ADVANCED BATTERY MONITOR IC FOR CELLULAR AND PDA APPLICATIONS
器件厂商：TI [Texas Instruments]
厂商主页：http://www.ti.com/
文件大小：330.43KB，共27页
Sponsor by e络盟器件资料摘要：
C0098C0113C0050C0048C0050C0051
C0083C0073C0078C0071C0076C0069C0262C0087C0073C0082C0069 C0065C0068C0086C0065C0078C0067C0069C0068 C0066C0065C0084C0084C0069C0082C0089 C0077C0079C0078C0073C0084C0079C0082 C0073C0067
C0070C0079C0082 C0067C0069C0076C0076C0085C0076C0065C0082 C0065C0078C0068 C0080C0068C0065 C0065C0080C0080C0076C0073C0067C0065C0084C0073C0079C0078C0083
SLUS480B – MAY 2001
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Multifunction Monitoring IC Designed to
Work With an Intelligent Host Controller:
– Provides Accurate State of Charge
Information for Rechargeable Batteries
– Enhances Power and Charge
Management in the System
C0068 Supply Operation Down to 2.4 V; Ideal for
Single-Cell Li-Ion or Li-Pol Applications
C0068 Communicates Over Single-Wire SDQ
Serial Interface
C0068 Resolves Signals Down to 3.05 µVh
C0068 High-Accuracy Coulometric Charge and
Discharge Current Integration
C0068 Differential Current Sense Input
C0068 Automatic and Continuous Offset
Calibration and Compensation
C0068 32 Bytes of General-Purpose RAM, 224
Bytes of FLASH, and 8 Bytes of Secure ID
ROM
C0068 Internal Temperature Sensor With 0.25°K
Resolution Eliminates the Need for an
External Thermistor
C0068 Programmable Digital Output Port
C0068 Battery-Pack Removal Detection Input
Places the IC in the Sleep Mode When
System Is Not Present
C0068 High-Accuracy Internal Timebase
Eliminates External Crystal Oscillator
C0068 Low Power Consumption:
– Operating: 40 µA
– Sleep: 1.5 µA
description
The bq2023 is an advanced battery monitoring IC
that accurately measures the charge and dis-
charge currents in rechargeable battery packs.
Intended for pack integration, the bq2023
contains all the necessary functions to form the
basis for an accurate battery gas gauge in cellular
phones, PDAs, or other portable products.
Gas gauging is accomplished by coulomb counting (i.e., measuring the charge input to and subsequently
removed from the battery). The bq2023 achieves that by measuring the differential voltage drop across a
low-value series sense resistor between the negative terminal of the battery and the battery-pack negative
contact. An internal voltage-to-frequency converter (VFC) converts this voltage into charge and discharge
counts. The VFC is capable of resolving signals down to 3.05 µV. By using the accumulated counts in the
charge, discharge, and self-discharge registers, an intelligent host controller can determine battery
state-of-charge information. To improve accuracy, the bq2023 continuously measures and compensates offset
errors in the VFC.
The bq2023 works with the host controller in the portable system to implement the battery management system.
The host controller interprets the bq2023 data and communicates meaningful battery data to the end-user or
power-management system. The SDQ single-wire bus architecture allows multiple bq2023s to exist on the
same communications node simultaneously.
The bq2023 provides 224 bytes of flash memory, 8-bytes of secure ID ROM, and 32 bytes of RAM. The
nonvolatile memory maintains formatted battery monitor information, identification codes, warranty information,
or other critical battery parameters while the battery is temporarily shorted or deeply discharged.
AVAILABLE OPTIONS
PACKAGED DEVICE
T
A
8-LEAD TSSOP
(PW)
–20°C to 70°C bq2023PW
Copyright 2001, Texas Instruments Incorporated
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046
C0080C0114C0111C0100C0117C0099C0116C0115 C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115
C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046 C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101
C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SDQ is a trademark of Texas Instruments.
1
2
3
4
8
7
6
5
RBI
V
CC
V
SS
SDQ
STAT
SRP
SRN
PDET
PW PACKAGE
(TOP VIEW)
C0083C0073C0078C0071C0076C0069C0262C0087C0073C0082C0069 C0065C0068C0086C0065C0078C0067C0069C0068 C0066C0065C0084C0084C0069C0082C0089 C0077C0079C0078C0073C0084C0079C0082 C0073C0067
C0070C0079C0082 C0067C0069C0076C0076C0085C0076C0065C0082 C0065C0078C0068 C0080C0068C0065 C0065C0080C0080C0076C0073C0067C0065C0084C0073C0079C0078C0083
SLUS480B – MAY 2001
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Multifunction Monitoring IC Designed to
Work With an Intelligent Host Controller:
– Provides Accurate State of Charge
Information for Rechargeable Batteries
– Enhances Power and Charge
Management in the System
C0068 Supply Operation Down to 2.4 V; Ideal for
Single-Cell Li-Ion or Li-Pol Applications
C0068 Communicates Over Single-Wire SDQ
Serial Interface
C0068 Resolves Signals Down to 3.05 µVh
C0068 High-Accuracy Coulometric Charge and
Discharge Current Integration
C0068 Differential Current Sense Input
C0068 Automatic and Continuous Offset
Calibration and Compensation
C0068 32 Bytes of General-Purpose RAM, 224
Bytes of FLASH, and 8 Bytes of Secure ID
ROM
C0068 Internal Temperature Sensor With 0.25°K
Resolution Eliminates the Need for an
External Thermistor
C0068 Programmable Digital Output Port
C0068 Battery-Pack Removal Detection Input
Places the IC in the Sleep Mode When
System Is Not Present
C0068 High-Accuracy Internal Timebase
Eliminates External Crystal Oscillator
C0068 Low Power Consumption:
– Operating: 40 µA
– Sleep: 1.5 µA
description
The bq2023 is an advanced battery monitoring IC
that accurately measures the charge and dis-
charge currents in rechargeable battery packs.
Intended for pack integration, the bq2023
contains all the necessary functions to form the
basis for an accurate battery gas gauge in cellular
phones, PDAs, or other portable products.
Gas gauging is accomplished by coulomb counting (i.e., measuring the charge input to and subsequently
removed from the battery). The bq2023 achieves that by measuring the differential voltage drop across a
low-value series sense resistor between the negative terminal of the battery and the battery-pack negative
contact. An internal voltage-to-frequency converter (VFC) converts this voltage into charge and discharge
counts. The VFC is capable of resolving signals down to 3.05 µV. By using the accumulated counts in the
charge, discharge, and self-discharge registers, an intelligent host controller can determine battery
state-of-charge information. To improve accuracy, the bq2023 continuously measures and compensates offset
errors in the VFC.
The bq2023 works with the host controller in the portable system to implement the battery management system.
The host controller interprets the bq2023 data and communicates meaningful battery data to the end-user or
power-management system. The SDQ single-wire bus architecture allows multiple bq2023s to exist on the
same communications node simultaneously.
The bq2023 provides 224 bytes of flash memory, 8-bytes of secure ID ROM, and 32 bytes of RAM. The
nonvolatile memory maintains formatted battery monitor information, identification codes, warranty information,
or other critical battery parameters while the battery is temporarily shorted or deeply discharged.
AVAILABLE OPTIONS
PACKAGED DEVICE
T
A
8-LEAD TSSOP
(PW)
–20°C to 70°C bq2023PW
Copyright 2001, Texas Instruments Incorporated
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046
C0080C0114C0111C0100C0117C0099C0116C0115 C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115
C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046 C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101
C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SDQ is a trademark of Texas Instruments.
1
2
3
4
8
7
6
5
RBI
V
CC
V
SS
SDQ
STAT
SRP
SRN
PDET
PW PACKAGE
(TOP VIEW)