參數(shù)資料
型號(hào)： LTC4080EMSE
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.8 A BATTERY CHARGE CONTROLLER, 2750 kHz SWITCHING FREQ-MAX, PDSO10
封裝： PLASTIC, MSOP-10
文件頁(yè)數(shù)： 15/20頁(yè)
文件大?。?/td> 288K
代理商： LTC4080EMSE
LTC4080
4
4080fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RON_P
PMOS Switch On-Resistance
0.95
Ω
RON_N
NMOS Switch On-Resistance
0.85
Ω
ILIM_P
PMOS Switch Current Limit
375
520
650
mA
ILIM_N
NMOS Switch Current Limit
600
mA
IZERO_CF
NMOS Zero Current in Normal Mode
15
mA
IPEAK
Peak Current in Burst Mode Operation
MODE = VBAT
50
100
130
mA
IZERO_BM
Zero Current in Burst Mode Operation
MODE = VBAT
20
35
50
mA
tSS_BUCK
Buck Soft-Start Time
From the Rising Edge of EN_BUCK to 90%
of Buck Regulated Output
400
s
Logic
VIH
Input High Voltage
EN_CHRG, EN_BUCK, MODE Pin Low to High ●
1.2
V
VIL
Input Low Voltage
EN_CHRG, EN_BUCK, MODE Pin High to Low ●
0.4
V
VOL
Output Low Voltage (
CHRG, ACPR)
ISINK = 5mA
●
60
105
mV
IIH
Input Current High
EN_BUCK, MODE Pins at 5.5V, VBAT = 5V
●
–1
1
A
IIL
Input Current Low
EN_CHRG, EN_BUCK, MODE Pins at GND
●
–1
1
A
REN_CHRG
EN_CHRG Pin Input Resistance
VEN_CHRG = 5V
11.7
3.3
M
Ω
ICHRG
CHRG Pin Leakage Current
VBAT = 4.5V, VCHRG = 5V
●
1A
IACPR
ACPR Pin Leakage Current
VCC = 3V, VCHRG = 5V
●
1A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4080 is guaranteed to meet performance specications
from 0°C to 85°C. Specications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
43°C/W.
The
● denotes specications which apply over the full operating tempera-
ture range, otherwise specications are at TA = 25°C, VCC = 5V, VBAT = 3.8V, VEN_CHRG = 0V, VEN_BUCK = VBAT, VMODE = 0V. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 4: Although the LTC4080 charger functions properly at 3.75V, full
charge current requires an input voltage greater than the desired nal
battery voltage per
ΔVUVCL1 specication.
Note 5: The 2.8V maximum buck undervoltage lockout (VUVLO_BUCK) exit
threshold must rst be exceeded before the minimum VBAT specication
applies.
Note 6: IC/10 is expressed as a fraction of measured full charge current
with indicated PROG resistor.
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