Datasheet

LTC3562
4
3562fa
PARAMETER CONDITIONS MIN TYP MAX UNITS
Regulators R400A, R400B
PMOS Switch Current Limit Pulse Skip Mode 600 800 1000 mA
PMOS R
DS(ON)
0.5
Ω
NMOS R
DS(ON)
0.5
Ω
LDO Mode Open Loop R
OUT
LDO Mode 3
Ω
SW Pull-Down in Shutdown Shutdown 2.5 kΩ
Available Output Current Forced Burst Mode
LDO Mode, V
OUT
= 1.2V
50
50
100 mA
mA
Regulators R600A, R400A
V
FB(MAX)
DAC = XXX1111, Pulse Skip Mode
l
0.776 0.800 0.824 V
V
FB(MIN)
DAC = XXX0000, Pulse Skip Mode
l
0.412 0.425 0.438 V
V
FB(STEP)
(0 to 15) 25 mV
I
FB
FB Input Current
DAC = XXX1111 –50 0 50 nA
Regulators R600B, R400B
V
OUT(MIN)
V
IN
= 4V, DAC = 0000000, Pulse Skip Mode
l
0.582 0.600 0.618 V
V
OUT(MAX)
V
IN
= 4V, DAC = 1111111,
Pulse Skip Mode
l
3.661 3.775 3.889 V
V
OUT(STEP)
(0 to 127) V
IN
= 4V 25 mV
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C, V
IN
= 3.8V, V
OUTx
= 1.5V, unless otherwise noted.
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 specifi cations
from 0°C to 85°C. Specifi cations over the –40°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 specifi 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.