MAX8900B データシートの表示（PDF） - Maxim Integrated
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コンポーネント説明
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MAX8900B
Maxim Integrated
MAX8900B Datasheet PDF : 35 Pages
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MAX8900A/MAX8900B/MAX8900C
1.2A Switch-Mode Li+ Chargers with ±22V Input
Rating and JEITA Battery Temperature Monitoring
VIN < VOVLO
TIMER = RESUME
NO PWR OR
CHARGER DISABLED
VIN > VUVLO
AND VIN > VBAT + VIN2BAT
AND TJ < TSHDN
(SET TIMER = 0)
STAT1 = HI-Z
STAT2 = HI-Z
IBAT = 0
DEAD BAT
CEN = LOGIC-HIGH
OR TJ > TSHDN
VIN < VUVLO
OR < VBAT + VIN2BAT
ANY STATE
VIN TOO HIGH
STAT1 = HI-Z
STAT2 = LOW
IBAT = 0
STAT1 = LOW
STAT2 = HI-Z
IBAT = IDBAT
VBAT < VPQLTH
VBAT > VPQLTH
TIMER > tPQ
VIN > VOVLO
TIMER = SUSPEND
DEAD BAT +
PREQUAL
STAT1 = LOW
STAT2 = HI-Z
IBAT = IDBAT + IPQ
TIMER > tPQ
ANY CHARGING STATE
(DEAD BAT, PREQUAL,
FAST CHG,
OR TOP-OFF)
THERMISTOR > T4 OR
THERMISTOR < T1
TIMER = SUSPEND
T1 < THERMISTOR < T4
TIMER = RESUME
BATTERY COLD/
BATTERY HOT
STAT1 = HI-Z
STAT2 = LOW
IBAT = 0 IF VBAT > VDBAT
VBAT < VDBAT
VBAT > VDBAT
PREQUAL
STAT1 = LOW
STAT2 = HI-Z
IBAT = IPQ
TIMER > tPQ
VBAT < VPQUTH
(SET TIMER = 0)
VBAT > VPQUTH
SOFT-START
(SET TIMER = 0)
FAST CHG
STAT1 = LOW
STAT2 = HI-Z
IBAT = IFC
TIMER FAULT
STAT1 = HI-Z
STAT2 = LOW
IBAT = 0
TIMER > tFC
IBAT > IDN + 1mA
(SET TIMER = 0)
IBAT < IDN
TOP-OFF
STAT1 = LOW
STAT2 = HI-Z
VBAT < VRSTRT
NO SOFT-START
(SET TIMER = 0)
TIMER > tTO
DONE
STAT1 = HI-Z
STAT2 = HI-Z
IBAT = 0
Figure 8. Charger State Diagram (2-Pin Status)
Maxim Integrated
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