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Part Name(s) : BD4201FV ROHM
ROHM Semiconductor
Description : BATTERY BACKUP IC

BD4201FV IS a BATTERY BACKUP IC. Switch that detect BATTERY VOLTAGE and switch inTO back up power supply and 3-channel regulaTOr are incorporated inTO a single chip. Current consumption IS 15µA (Max.). ThIS IC IS perfect for portable appliances.

zFeatures
1) LOW quiescent current Normal OPERATION < 15.0µA Max. BACKUP mode < 2.1µA Max.
2) 3 high accurate VOLTAGE regulaTOrs
3) LOW dropout VOLTAGE, and high accurate VOLTAGE detecTOrs (CS, RESET)
4) Control circuit; BACKUP
5) Special sequence; For shifting TO the BACKUP mode. It need TO make main BATTERY over +Vdet1 once.

Applications
    Portable video, Digital camera

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Part Name(s) : BA6129AF BA6162 BA6162F ROHM
ROHM Semiconductor
Description : Reset IC with BATTERY BACKUP function

The BA6129AF, BA6162, and BA6162F are reset ICs with a BATTERY BACKUP function, designed for equipment using SRAMs and other similar components. These ICs are configured of a reset signal and CS signal output unit and a power supply switching unit.

Features
1) Equipped with BATTERY BACKUP function.
2) Equipped with both CS signals (CS and CSB) and
   Reset signals.
3) LOW current dISsipation when powered from BATTERY.
4) LOW VOLTAGE loss when powered from BATTERY.
5) Smooth switching BEtween power supply and BATTERY.

Applications
   Equipment using SRAMs (cards, cassettes, facsimile machines,
   copiers, word processors, personal computers, etc.)

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Part Name(s) : 155833 15585 LTC1558 LTC1558-3.3 LTC1558-5 LTC1558CGN-3.3 LTC1558CGN-5 LTC1558CS-3.3 LTC1558CS-5 LTC1558CS8-3.3 LTC1558CS8-5 Linear
Linear Technology
Description : BACKUP BATTERY Controller with Programmable Output

DESCRIPTION
The LTC®1558 IS a BACKUP BATTERY controller that provides all the functions necessary TO implement a BACKUP power supply using a single NiCd cell. It includes a 1.2V boost converter, an intelligent 2-stage BATTERY charger, auTO matic BACKUP switching and a microprocessor reset generaTOr. The boost converter uses a synchronous switching architecture TO achieve a typical efficiency of 70%, ensuring maximum BACKUP lifetime from a small NiCd cell.

FEATURES
■ Complete BATTERY BACKUP System in an SO-8, 16-Pin GN or SO Package
■ Generates Adjustable BACKUP VOLTAGE from a Single 1.2V NiCd ButTOn Cell
■ AuTOmatic Main Supply TO BACKUP Switching
■ Minimum 100mW Output Power
■ AuTOmatic Fast Recharge of NiCd BATTERY
■ Programmable NiCd Trickle Charge Current
■ Smart NiCd Charger Minimizes Recharge Time and Maximizes System Efficiency After BACKUP
■ On-Chip Power-On Reset
■ PushbutTOn Reset Input
■ Reset Assertion Guaranteed at VCC= 1V
■ Short-Circuit Protection
■ Thermal Limiting

APPLICATIONS
■ Notebook Computers
■ PalmTOp Computers/PDAs
■ Portable Instruments
BATTERY-Powered Systems

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Part Name(s) : MB3790 MB3790PF MB3790PFT Fujitsu
Fujitsu
Description : BATTERY BACKUP IC

■DESCRIPTION
The MB3790 IS designed TO control power supplies TO SRAM, logic IC, or other circuit devices and protects them against momentary power failures by using BACKUP batteries. In addition TO its function TO supply the power TO these devices, it has a function TO switch the source of power TO the primary or secondary BACKUP BATTERY when the power supply VOLTAGE drops BELOW a predetermined level. Also, it outputs a reset signal when the power supply turns on or off or when a fault occurs in the power supply. Ideally designed as a single-chip IC for power supply control, the MB3790 consumes only a minimal current and comes in a thin-type package. Therefore, it IS BEst suited for power supply control in memory cards and similar other devices.

■FEATURES
• Input circuit current consumption when non-loaded: 50 µA [typ]
• Output drive current: 200 mA [max]
• ResIStance BEtween input and output: 0.5 ohms [typ]
• Input power-down detection level: 4.2 V ± 2.5 %
• On-chip power-on reset circuit
• Primary BATTERY VOLTAGE-down detection levels: 2.65 V, 2.37 V

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Part Name(s) : ACT2801 ACT2801CQL-T ACT2801QL-T ACT2801QL-T0550 ACT2801QL-T1026 ETC
Unspecified
Description : 5V/1.5A BACKUP BATTERY Pack Manager

[ACTIVE-SEMI]

GENERAL DESCRIPTION
ACT2801 IS a space-saving and high-performance LOW-profile single-chip solution for BACKUP BATTERY pack and standalone BATTERY charger. ACT2801 integrates all the functions that a BACKUP BATTERY pack needs, including switching charger, boost converter and LED indication.

FEATURES
Dedicated Single Chip Solution for Mobile Power With Minimal Component Count
5V/1.5A Constant Output Current in Boost Mode
1.5A Switching Charger
Programmable 4.1V TO 4.35V BATTERY VOLTAGE
95% Boost Efficiency (Vbat=4.1V)
Adaptive TO 10mA-2400mA Input Sources
BATTERY DISconnection at Output Short
<10µA LOW BATTERY Leakage Current at HZ
Mode During STOrage
Boost AuTO Turn-off at No Load and Push ButTOn Turn-on
BATTERY Over Current, Over VOLTAGE, Over Temperature and Short Circuit Protections
Boost AuTO Startup with Load Detection

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Part Name(s) : MAX703 MAX703-MAX704 MAX703C MAX703C/D MAX703CPA MAX703CSA MAX703EPA MAX703ESA MAX703MJA MAX704 MAX704C MAX704C/D MAX704CPA MAX704CSA MAX704EPA MAX704ESA MAX704MJA MaximIC
Maxim Integrated
Description : LOW-Cost Microprocessor SupervISory Circuits with BATTERY BACKUP

General Description
The MAX703/MAX704 microprocessor (μP) supervISory circuits reduce the complexity and numBEr of components required for power-supply moniTOring and BATTERY control functions in μP systems. These devices significantly improve system reliability and accuracy compared TO that obtained with separate ICs or dIScrete components.
The MAX703/MAX704 are available in 8-pin DIP and SO packages and provide four functions:

   1) An active-LOW reset during power-up, power-down, and
      brownout conditions.
   2) BATTERY-BACKUP switching for CMOS RAM, CMOS μPs,
      or other LOW-power logic circuitry.
   3) A 1.25V threshold detecTOr for power-fail warning,
      LOW-BATTERY detection, or for moniTOring a power supply
      other than +5V.
   4) An active-LOW manual reset input.
  
The MAX703 and MAX704 differ only in their supplyvolt age moniTOr levels. The MAX703 generates a reset when the supply drops BELOW 4.65V, while the MAX704 gener ates a reset BELOW 4.40V.

Features
BATTERY-BACKUP Power Switching
● PrecISion Supply-VOLTAGE MoniTOr
   • 4.65V (MAX703)
   • 4.40V (MAX704)
● 200ms Reset Pulse Width
● Debounced TTL/CMOS-Compatible Manual Reset
   Input
● 200μA Quiescent Current
● 50nA Quiescent Current in BATTERY-BACKUP Mode
VOLTAGE MoniTOr for Power-Fail or LOW-BATTERY
   Warning
● 8-Pin DIP and SO Packages
● Guaranteed RESET Assertion TO VCC = 1V

Applications
   ● Computers
   ● Controllers
   ● Intelligent Instruments
   ● Critical μP Power MoniTOring

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Part Name(s) : MAX16016 MAX16016_TB_-T MAX16016LTB MAX16016LTB-T MAX16016PTB MAX16016PTB-T MAX16020 MAX16020LTE MAX16020LTE-T MAX16020PTE MAX16020PTE-T MAX16020_TE_-T MAX16020_TE_T MAX16021 MAX16021LTE MAX16021LTE-T MAX16021PTE MAX16021PTE-T MAX16021_TE_-T MAX16021_TE_T MaximIC
Maxim Integrated
Description : LOW-Power µP SupervISory Circuits with BATTERY-BACKUP Circuit and Chip-Enable Gating

General Description
The MAX16016/MAX16020/MAX16021 supervISory circuits moniTOr power supplies, provide BATTERY-BACKUP control, and chip-enable (CE) gating TO write protect memory in microprocessor (µP)-based systems. These LOW-power devices improve system reliability by providing several supervISory functions in a small, single integrated solution.

Features
♦ System MoniTOring for 5V, 3.3V, 3V, 2.5V, or 1.8V
   Power-Supply VOLTAGEs
♦ 1.53V TO 5.5V Operating VOLTAGE Range
LOW 1.2µA Supply Current (0.25µA in BATTERY
   BACKUP Mode)
♦ 145ms (min) Reset Timeout Period
BATTERY Freshness Seal
♦ On-Board Gating of CE Signals, 1.5ns
   Propagation Delay (MAX16020/MAX16021)
♦ Debounced Manual Reset Input
♦ Watchdog Timer, 1.2s (typ) Timeout
♦ Power-Fail ComparaTOr and LOW-Line IndicaTOr for
   MoniTOring VOLTAGEs Down TO 0.6V
BATTERY-On, BATTERY-OK, and BATTERY Test
   IndicaTOrs
♦ Small 10-Pin TDFN or 16-Pin TQFN Packages
♦ UL®-Certified TO Conform TO IEC 60950-1

Applications
   Main/BACKUP Power for RTCs, CMOS Memories
   Industrial Control
   GPS Systems
   Set-TOp Boxes
   Point-of-Sale Equipment
   Portable/BATTERY Equipment

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Part Name(s) : ISL12008 ISL12008IB8Z ISL12008IB8Z-T Intersil
Intersil
Description : I2C Real Time Clock with BATTERY BACKUP

LOW Power RTC with BATTERY ReSeal™ Function

The ISL12008 device IS a LOW power real time clock/calendar that IS pin compatible and functionally equivalent TO the ST M41T00S and Maxim DS1340 with timing and crystal compensation. The device additionally provides power-fail indicaTOr, software alarm and intelligent BATTERY BACKUP.

Features
• Pin Compatible TO ST M41T00S and Maxim DS1340
• Functionality Equivalent TO ST M41T00S and Maxim DS1340
• Real Time Clock/Calendar
    - Tracks Time in Hours, Minutes, Seconds and Sub-seconds
    - Day of the Week, Day, Month, and Year
• 512Hz Frequency Outputs for On-Chip Crystal Compensation
• Software Alarm
    - Settable TO the Second, Minute, Hour, Day of the Week, Day, or Month
• AuTOmatic LOW-Drop BATTERY Switch for Longest BACKUP Life
• Power Failure Detection
BATTERY ReSeal™ for Long Shelf Life
• I2C Bus™
    - 400kHz Data Transfer Rate
• 800nA BATTERY Supply Current
• Small Package Option
    - 8 Ld SOIC
• Pb-Free (RoHS Compliant)

Applications
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Set-TOp Box/TelevISion
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office AuTOmation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/AuTOmotive

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Part Name(s) : ISL12008 ISL12008IB8Z ISL12008IB8Z-T Renesas
Renesas Electronics
Description : I2C Real Time Clock with BATTERY BACKUP

LOW Power RTC with BATTERY ReSeal™ Function

The ISL12008 device IS a LOW power real time clock/calendar that IS pin compatible and functionally equivalent TO the ST M41T00S and Maxim DS1340 with timing and crystal compensation. The device additionally provides power-fail indicaTOr, software alarm and intelligent BATTERY BACKUP.

Features
• Pin Compatible TO ST M41T00S and Maxim DS1340
• Functionality Equivalent TO ST M41T00S and Maxim DS1340
• Real Time Clock/Calendar
    - Tracks Time in Hours, Minutes, Seconds and Sub-seconds
    - Day of the Week, Day, Month, and Year
• 512Hz Frequency Outputs for On-Chip Crystal Compensation
• Software Alarm
    - Settable TO the Second, Minute, Hour, Day of the Week, Day, or Month
• AuTOmatic LOW-Drop BATTERY Switch for Longest BACKUP Life
• Power Failure Detection
BATTERY ReSeal™ for Long Shelf Life
• I2C Bus™
    - 400kHz Data Transfer Rate
• 800nA BATTERY Supply Current
• Small Package Option
    - 8 Ld SOIC
• Pb-Free (RoHS Compliant)

Applications
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Set-TOp Box/TelevISion
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office AuTOmation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/AuTOmotive

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Part Name(s) : TC70 TC71 TC70COA TC70CPA TC70EOA TC70EPA TC71COA TC71CPA TC71EOA TC71EPA TelCom-Semiconductor
TelCom Semiconductor Inc => Microchip
Description : MICROMASTER™ – SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP

GENERAL DESCRIPTION
The TC70/71 IS a fully-integrated power supply moniTOr, watchdog and BATTERY BACKUP circuit in a space-saving 8-pin package.
When power IS initially applied, the TC70/71 holds the processor in its reset state for a minimum of 500msec after VCC IS in TOlerance TO ensure stable system start-up. After start-up, processor sanity IS moniTOred by the on-board watchdog circuit. The processor must provide periodic high-TO-LOW level transitions TO the TC70/71 TO verify proper execution. Should the processor fail TO supply thIS signal within the specified timeout period, an out-of-control processor IS indicated and the TC70/71 ISsues a momentary processor reset as a result. The TC70 also features a watchdog dISable pin TO facilitate system test and debug.

FEATURES
■ Maximum Functional Integration: PrecISion Power
   Supply MoniTOr, Watchdog Timer, External RESET
   Override, Threshold DetecTOr and BATTERY BACKUP
   Controller in an 8-Pin Package
■ Generates Power-on RESET and Guards Against
   Unstable Processor OPERATION Resulting from
   Power "Brown-out"
■ AuTOmatically Halts and Restarts an Out-of
   Control Microprocessor
■ Output Can BE Wire-ORed, or Hooked TO Manual
   RESET PushbutTOn Switch
■ Watchdog DISable Pin for Easier ProTOtyping (TC70)
VOLTAGE MoniTOr for Power Fail or LOW BATTERY
   Warning (TC71)
■ Available in 8-Pin Plastic DIP or 8-Pin SOIC Packages
■ Cost Effective

TYPICAL APPLICATIONS
■ All Microprocessor-based Systems
■ Test Equipment
■ Instrumentation
■ Set-TOp Boxes

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