LTC3562 Datasheet, PDF (2/20 Pages) Linear Technology – I2C Quad Synchronous Step-Down DC/DC Regulator 2 × 600mA, 2 × 400mA

LTC3562
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
V_IN ............................................................... –0.3V to 6V
RUN600A ...................................... –0.3V to (V_IN + 0.3V)
RUN400A ...................................... –0.3V to (V_IN + 0.3V)
FBx............................................................... –0.3V to 6V
SWx ............................................................. –0.3V to 6V
OUTx............................................................ –0.3V to 6V
DV_CC, POR600A, SDA, SCL ......................... –0.3V to 6V
I_SW400x (DC) ........................................................600mA
I_SW600x (DC) ........................................................850mA
Operating Temperature (Note 2)...............–40°C to 85°C
Storage Temperature Range...................–65°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
PIN CONFIGURATION
TOP VIEW
20 19 18 17 16
AGND 1
15 POR600A
FB400A 2
14 FB600A
OUT400B 3
21
13 OUT600B
SW400B 4
12 SW600B
PGND 5
11 PGND
6 7 8 9 10
UD PACKAGE
20-LEAD (3mm × 3mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 68°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3562EUD#PBF
LTC3562EUD#TRPBF
LCPV
20-Lead (3mm × 3mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C, V_IN = 3.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN Input Voltage Range
V_IN Input Current (Per Regulator Enabled)
V_IN Shutdown Current
RUN600A, RUN400A Input High Threshold
RUN600A, RUN400A Input Low Threshold
RUN600A, RUN400A Input High Current
RUN600A, RUN400A Input Low Current
POR600A Threshold
POR600A On-Resistance
POR600A Delay
Pulse Skip Mode, I_OUT = 0
Burst Mode Operation, I_OUT = 0
Forced Burst Mode Operation, I_OUT = 0
LDO Mode, I_OUT = 0
Shutdown Mode, I_OUT = 0, DV_CC = 1.8V
All Regulators in Shutdown, DV_CC = 0V
RUNx = V_IN
RUNx = 0V
Percentage of R600A’s Final Output Voltage
l 2.7
5.5
V
220
μA
35
60
μA
25
40
μA
24
40
μA
0.7
3
μA
0.1
1
μA
l 1.0
V
l
0.3
V
–1
1
μA
–1
1
μA
–8
%
16
40
Ω
231
ms
3562fa
2