LTC3548EDD Datasheet, PDF (2/16 Pages) Linear Technology – Dual Synchronous, 400mA/800mA, 2.25MHz

LTC3548
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_IN Voltages .................................................– 0.3V to 6V
V_FB1, V_FB2 Voltages ...........................– 0.3V to V_IN +0.3V
RUN1, RUN2 Voltages ................................ – 0.3V to V_IN
MODE/SYNC Voltage .......................– 0.3V to V_IN + 0.3V
SW1, SW2 Voltage...........................– 0.3V to V_IN + 0.3V
POR Voltage.................................................– 0.3V to 6V
Operating Temperature Range (Note 2)....–40°C to 85°C
Junction Temperature (Note 5) ............................. 125°C
Storage Temperature Range...................– 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSE Only.......................................................... 300°C
PIN CONFIGURATION
TOP VIEW
V_FB1 1
RUN1 2
V_{IN 3}
SW1 ₄
GND ₅
10 V_FB2
9 RUN2
11
8 POR
7 SW2
6 MODE/
SYNC
DD PACKAGE
10-LEAD (3mm s 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 45°C/W, θ_JC = 3°C/W
EXPOSED PAD (PIN 11) IS PGND, MUST BE CONNECTED TO GND
(SOLDERED TO A 4-LAYER BOARD)
TOP VIEW
V_FB1 1
RUN1 2
10 V_FB2
9 RUN2
V_IN 3
11
8 POR
SW1 4
7 SW2
GND 5
6 ^MODE/
SYNC
MSE PACKAGE
10-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 45°C/W, θ_JC = 10°C/W
EXPOSED PAD (PIN 11) IS PGND, MUST BE CONNECTED TO GND
(SOLDERED TO A 4-LAYER BOARD)
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3548EDD#PBF
LTC3548EDD#TRPBF
LBNJ
10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LTC3548IDD#PBF
LTC3548EMSE#PBF
LTC3548IDD#TRPBF
LTC3548EMSE#TRPBF
LBNJ
LTBNH
10-Lead (3mm × 3mm) Plastic DFN
10-Lead Plastic MSOP
–40°C to 85°C
–40°C to 85°C
LTC3548IMSE#PBF
LTC3548IMSE#TRPBF LTBNH
10-Lead Plastic MSOP
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V, unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
V_IN
Operating Voltage Range
l 2.5
5.5
I_FB
Feedback Pin Input Current
l
30
V_FB
Feedback Voltage (Note 3)
0°C ≤ T_A ≤ 85°C
–40°C ≤ T_A ≤ 85°C
0.588 0.6 0.612
l 0.585 0.6 0.612
ΔV_LINEREG
Reference Voltage Line Regulation
V_IN = 2.5V to 5.5V (Note 3)
0.3
0.5
UNITS
V
nA
V
V
%V
3548fc
2