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參數(shù)資料
| 型號： | LTM8062EV#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | BATTERY CHARGE CONTROLLER, 1150 kHz SWITCHING FREQ-MAX, PBGA77 |
| 封裝： | 15 X 9 MM, 4.32 MM HEIGHT, ROHS COMPLIANT, MO-222, LGA-77 |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 580K |
| 代理商： | LTM8062EV#PBF |
LTM8062/LTM8062A
8
8062fa
BLOCK DIAGRAM
8062 BD
VINA
8.2H
SENSE
RESISTOR
10F (LTM8062)
2.2F (LTM8062A)
0.1F
RUN
VINREG
ADJ
TMR
NTC
BIAS
ADJ
GND
FAULT
CHRG
VIN
BAT
CURRENT
MODE
BATTERY
MANAGEMENT
CONTROLLER
INTERNAL
COMPENSATION
100k
PIN FUNCTIONS
A 0.68μF capacitor is often used, which generates a timer
EOC at three hours, and a precondition limit time of 22.5
minutes. If a timer-based termination is not desired, the
timer function can be disabled by connecting the TMR
pin to ground. With the timer function disabled, charging
terminates when the charge current drops below a C/10
rate, approximately 200mA.
VINREG (Pin L6): Input Voltage Regulation Reference. The
maximumchargecurrentisreducedwhenthispinisbelow
2.7V. There is a 100k resistor to GND. Connecting a resis-
tor from VIN to this pin sets the minimum operational VIN
voltage. This is typically used to program the peak power
voltage for a solar panel. The LTM8062/LTM8062A servo
the maximum charge current required to maintain the
programmed operational VIN voltage, through maintain-
ing the voltage on VINREG at or above 2.7V. If the voltage
regulation feature is not used, connect the pin to VIN.
RUN (Pin K6): Precision Threshold Enable Input Pin. The
RUN threshold is 1.25V (rising), with 120mV of input hys-
teresis.Wheninshutdownmode,allchargingfunctionsare
disabled. The precision threshold allows use of the RUN
pin to incorporate UVLO functions. If the RUN pin is pulled
below 0.4V, the IC enters a low current shutdown mode
where the VIN pin current is reduced to 15μA. Typical RUN
pin input bias current is 10nA. If the shutdown function is
not desired, connect the pin to the VIN pin.
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