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| LTC3562 Datasheet, PDF (4/20 Pages) Linear Technology – I2C Quad Synchronous Step-Down DC/DC Regulator 2 × 600mA, 2 × 400mA | |||
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LTC3562
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C, VIN = 3.8V, VOUTx = 1.5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Regulators R400A, R400B
PMOS Switch Current Limit
Pulse Skip Mode
600 800 1000
mA
PMOS RDS(ON)
NMOS RDS(ON)
LDO Mode Open Loop ROUT
SW Pull-Down in Shutdown
LDO Mode
Shutdown
0.5
Ω
0.5
Ω
3
Ω
2.5
kΩ
Available Output Current
Regulators R600A, R400A
Forced Burst Mode
LDO Mode, VOUT = 1.2V
50
100
mA
50
mA
VFB(MAX)
VFB(MIN)
VFB(STEP) (0 to 15)
IFB
DAC = XXX1111, Pulse Skip Mode
DAC = XXX0000, Pulse Skip Mode
FB Input Current
DAC = XXX1111
l 0.776 0.800 0.824
V
l 0.412 0.425 0.438
V
25
mV
â50
0
50
nA
Regulators R600B, R400B
VOUT(MIN)
VOUT(MAX)
VOUT(STEP) (0 to 127)
VIN = 4V, DAC = 0000000, Pulse Skip Mode
VIN = 4V, DAC = 1111111,
Pulse Skip Mode
VIN = 4V
l 0.582 0.600 0.618
V
l 3.661 3.775 3.889
V
25
mV
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 LTC3562E is guaranteed to meet performance speciï¬cations
from 0°C to 85°C. Speciï¬cations over the â40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process control.
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Overtemperature protection is active when junction temperature exceeds
the maximum operating junction temperature. Continuous operation above
the speciï¬ed maximum operating junction temperature may result in
device degradation or failure.
Note 4: The serial port is tested at rated operating frequency. Timing
parameters are tested and/or guaranteed by design.
3562fa
4
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