LTC3619B_15 Datasheet, PDF (2/20 Pages) Linear Technology – 400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit

LTC3619B
Absolute Maximum Ratings (Note 1)
Input Supply Voltage (V_IN).............................. –0.3 to 6V
V_FB1, V_FB2......................................... –0.3V to V_IN + 0.3V
RUN1, RUN2, RLIM........................... –0.3V to V_IN + 0.3V
SW1, SW2......................................... –0.3V to V_IN + 0.3V
PGOOD1, PGOOD2............................ –0.3V to V_IN + 0.3V
P-channel SW Source Current (DC) (Note 2)
Channel 1......................................................... 600mA
Channel 2.................................................................1A
N-channel SW Source Current (DC) (Note 2)
Channel 1......................................................... 600mA
Channel 2.................................................................1A
Peak SW Source and Sink Current (Note 2)
Channel 1......................................................... 900mA
Channel 2.............................................................. 2.7A
Operating Junction Temperature Range
(Notes 3, 6, 8).........................................–40 to 125°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSOP Package.................................................. 300°C
Reflow Peak Body Temperature............................. 260°C
Pin Configuration
TOP VIEW
V_FB1 1
RUN1 2
RLIM 3
PGOOD1 4
SW1 5
10 V_FB2
9 RUN2
11
GND
8 PGOOD2
7 SW2
6 V_IN
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
V_FB1 1
10 V_FB2
RUN1 2
RLIM 3
PGOOD1 4
11
GND
9 RUN2
8 PGOOD2
7 SW2
SW1 5
6 V_IN
MSE PACKAGE
10-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 45°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3619BEDD#PBF
LTC3619BEDD#TRPBF LFFH
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3619BIDD#PBF
LTC3619BIDD#TRPBF LFFH
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3619BEMSE#PBF
LTC3619BEMSE#TRPBF LTFFJ
10-Lead Plastic MSOP
–40°C to 125°C
LTC3619BIMSE#PBF
LTC3619BIMSE#TRPBF LTFFJ
10-Lead Plastic MSOP
–40°C to 125°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 l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN
V_IN Operating Voltage Range
V_UV
V_IN Undervoltage Lockout
V_IN Low to High
l 2.5
5.5
V
l
2.1
2.5
V
3619bfb
2