Electronic Components Datasheet Search |
|
MAX1874 Datasheet(PDF) 5 Page - Maxim Integrated Products |
|
MAX1874 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 16 page Dual-Input, USB/AC Adapter, 1-Cell Li+ Charger with OVP and Thermal Regulation _______________________________________________________________________________________ 5 ELECTRICAL CHARACTERISTICS (continued) (VUSB = VDC = VDCLV = VEN = VUSEL = 5V, VBATT = 4.2V, VTHRM = VREF / 2, Circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS BATTERY VOLTAGE BATT Regulation Voltage 4.1685 4.2315 V BATT Prequal Voltage Threshold BATT rising 2.8 3.2 V REF Voltage (Buffered Output) IREF = 0 to 500µA, 4V < VDC or VUSB < 6.5V; does not affect BATT regulation accuracy 2.94 3.06 V BATTERY CHARGING AND PRECHARGE CURRENT DCI Voltage Range 0.1 x VREF VREF V VDCI = VREF 930 1070 DCI Voltage to BATT Current VDCI = VREF / 2 490 565 mA USEL = high 495 USB Charging Current USEL = low 95 mA Prequal Charging Current VBATT = 2.5V 40 70 mA BATT Input Current No DC or USB power, VBATT = 4.2V 7.5 µA BATT Shutdown Current EN = GND, USB and/or DC powered 2 µA THERMISTOR MONITOR AND DIE-TEMPERATURE REGULATION THRM COLD Trip Level (Note 2) 0.72 0.76 VREF THRM HOT Trip Level (Note 2) 0.28 0.30 VREF THRM Disable Threshold 50 150 mV LOGIC INPUT/OUTPUTS AND GATE DRIVERS DCOK Off-Leakage Current V DCOK = 12V, VDC = 0V 1 µA UOK Off-Leakage Current V UOK = 6.5V 1 µA DC input (% of charge current set at DCI) 8 20 CHG Threshold to Indicate Battery Full, Battery Current Falling (Note 3) USB input, USEL = 5V (% of USB charging current) 20 30 % CHG Logic-Low Output Sinking 10mA sink 0.4 V CHG Leakage Current V CHG = 6.5V 1 µA EN, USEL Logic-Input High Level 1.6 V EN, USEL Logic-Input Low Level 0.4 V EN, USEL Input Bias Current 1µA Note 1: BYP internally connects to the active power input (DCLV or USB). DCLV takes priority if both inputs are powered. Note 2: These limits guarantee +5°C accuracy with 5% accuracy of thermistor beta (3450 nominal) with 2°C of hysteresis. Note 3: The CHG output does not go high unless charge current is below the indicated threshold (as set by DCI) and the charger is in voltage-mode operation. In 100mA USB mode, CHG goes high when the charger transitions from current to voltage mode. Note 4: Specifications to -40°C are guaranteed by design, not production tested. |
Similar Part No. - MAX1874 |
|
Similar Description - MAX1874 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |