LTC4080X View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC4080X
Linear Technology
LTC4080X Datasheet PDF : 20 Pages
| |||
LTC4080X
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at TA = 25°C, VCC = 5V, VBAT = 3.8V, V⎯E⎯N⎯_⎯C⎯H⎯R⎯G = 0V, VEN_BUCK = VBAT, VMODE = 0V. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IBAT_NL_BM
No-Load Battery Current (Burst Mode No-Load for Regulator, V⎯E⎯N⎯_⎯C⎯H⎯R⎯G = 5V,
Operation)
MODE = VBAT, L = 10µH, C = 4.7µF
23
µA
IBAT_SLP
Battery Current in SLEEP Mode
V⎯E⎯N⎯_⎯C⎯H⎯R⎯G = 5V, MODE = VBAT,
VOUT > Regulation Voltage
● 10
15
20
µA
VUVLO_BUCK
Buck Undervoltage Lockout Voltage
VBAT Rising
VBAT Falling
● 2.6
2.7
2.8
V
● 2.4
2.5
2.6
V
RON_P
PMOS Switch On-Resistance
0.95
Ω
RON_N
NMOS Switch On-Resistance
0.85
Ω
ILIM_P
PMOS Switch Current Limit
375 520 700
mA
ILIM_N
NMOS Switch Current Limit
700
mA
IZERO_CF
NMOS Zero Current in Normal Mode
15
mA
IPEAK
Peak Current in Burst Mode Operation MODE = VBAT
50
100 150
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
µs
Logic
VIH
Input High Voltage
⎯E⎯N⎯_⎯C⎯H⎯R⎯G, EN_BUCK, MODE Pin Low to High ●
1.2
V
VIL
Input Low Voltage
E⎯ ⎯N⎯_⎯C⎯H⎯R⎯G, EN_BUCK, MODE Pin High to Low ● 0.4
V
VOL
Output Low Voltage (⎯C⎯H⎯R⎯G, ⎯A⎯C⎯P⎯R) ISINK = 5mA
●
60
105
mV
IIH
IIL
R⎯E⎯N⎯_⎯C⎯H⎯R⎯G
I⎯C⎯H⎯R⎯G
I⎯A⎯C⎯P⎯R
Input Current High
Input Current Low
⎯E⎯N⎯_⎯C⎯H⎯R⎯G Pin Input Resistance
⎯C⎯H⎯R⎯G Pin Leakage Current
⎯A⎯C⎯P⎯R Pin Leakage Current
EN_BUCK, MODE Pins at 5.5V, VBAT = 5V
⎯E⎯N⎯_⎯C⎯H⎯R⎯G, EN_BUCK, MODE Pins at GND
● –1
● –1
1
µA
1
µA
V⎯E⎯N⎯_⎯C⎯H⎯R⎯G = 5V
VBAT = 4.5V, V⎯C⎯H⎯R⎯G = 5V
VCC = 3V, V⎯C⎯H⎯R⎯G = 5V
1
1.45 3.3
MΩ
●
1
µA
●
1
µA
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 LTC4080X is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications 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.
Note 4: Although the LTC4080X charger functions properly at 3.75V, full
charge current requires an input voltage greater than the desired final
battery voltage per ΔVUVCL1 specification.
Note 5: The 2.8V maximum buck undervoltage lockout (VUVLO_BUCK) exit
threshold must first be exceeded before the minimum VBAT specification
applies.
Note 6: IC/10 is expressed as a fraction of measured full charge current
with indicated PROG resistor.
4080Xf
4
Share Link: 