Part # MAX6427-MAX6438 datasheet

Part Manufacturer: Maxim


Part Description: MAX6427 DS

Part Details:

19-2323; Rev 2; 12/05 Low-Power, Single/Dual-Level Battery Monitors with Hysteresis MAX6427­MAX6438 General Description Features The MAX6427­MAX6438 are single/dual-level battery mon- Factory-Trimmed or User-Adjustable Threshold itors with internal hysteresis. These devices are offered with Options single (MAX6427/MAX6428/MAX6429, MAX6433/ Factory-Trimmed Low Thresholds from 1.6V to MAX6434/MAX6435) or dual (MAX6430/MAX6431/ 2.1V or 2.6V to 3.1V in 100mV Increments MAX6432, MAX6436/MAX6437/MAX6438) low-battery out- (MAX6427­MAX6432) put indicators, which can be used to indicate three battery Factory-Trimmed High Thresholds from 2.3V to conditions: battery is good (operate system in normal 2.6V or 3.3V to 3.6V in 100mV Increments mode), battery is weak (operate system in low-powermode), or battery is empty (disable the system). (MAX6427­MAX6432)User-Adjustable Low/High Thresholds with These devices are ideal for monitoring single lithium-ion 615mV Internal Reference (MAX6433­MAX6438) (Li+) cells or multicell alkaline/NiCd/NiMH power supplies. When the power-supply voltage drops below the specified Low Current (1µA, typ) low threshold, the low-battery output asserts. When the Single or Dual Low-Battery Outputs voltage rises above the specified high threshold, the low- Push-Pull LBO, Open-Drain LBO, and Open-Drain battery output is deasserted following a 140ms minimum LBO Options timeout period. The timeout period ensures that the supply 140ms Minimum LBO Timeout Period voltages have stabilized before power-converter or micro- Immune to Short Battery Voltage Transients processor activity is enabled. Guaranteed Valid LBO Logic State to BATT = 1.0V The MAX6427­MAX6438 family is available with several -40°C to +85°C Operating Temperature Range monitoring options. The MAX6427/MAX6428/MAX6429 Small 3, 4, 5 and 6-Pin SOT Packages offer factory-trimmed battery-monitor thresholds, with a sin- No External Components Required gle low-battery output. The MAX6430/MAX6431/MAX6432 (MAX6427­MAX6432) also feature factory-trimmed thresholds, but have two low-battery outputs. Ordering Information The MAX6433­MAX6438 have user-adjustable threshold PART TEMP RANGE PIN-PACKAGE voltages permitting the user to select the hysteresis range,

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MAX6427-MAX6438.pdf Datasheet