900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC3419IMS-1 Datasheet

Dual Monolithic 600mA Synchronous Step-Down Regulator

No Preview Available !

FEATURES
n High Efficiency Dual Step-Down Outputs: Up to 96%
n 600mA Current per Channel at VIN = 3V
n Only 35μA Quiescent Current During Operation
(Both Channels)
n 2.25MHz Constant-Frequency Operation
n 2.5V to 5.5V Input Voltage Range
n Low Dropout Operation: 100% Duty Cycle
n No Schottky Diodes Required
n Internally Compensated for All Ceramic Capacitors
n Independent Internal Soft-Start for Each Channel
n Available in Fixed Output Versions
n Current Mode Operation for Excellent Line and Load
Transient Response
n 0.6V Reference Allows Low Output Voltages
n User-Selectable Burst Mode® Operation
n Short-Circuit Protected
n Ultralow Shutdown Current: IQ < 1μA
n Available in Small MSOP or 3mm × 3mm DFN-8
Packages
APPLICATIONS
n Cellular Telephones
n Digital Still Cameras
n Wireless and DSL Modems
n Portable Media Players
n PDAs/Palmtop PCs
LTC3419
Dual Monolithic 600mA
Synchronous Step-Down
Regulator
DESCRIPTION
The LTC®3419 is a dual, 2.25MHz, constant-frequency,
synchronous step-down DC/DC converter in a tiny
3mm × 3mm DFN package. 100% duty cycle provides
low dropout operation, extending battery life in portable
systems. Low output voltages are supported with the 0.6V
feedback reference voltage. Each regulator can supply
600mA output current.
The input voltage range is 2.5V to 5.5V, making it ideal
for Li-Ion and USB powered applications. Supply current
during operation is only 35μA and drops to <1μA in
shutdown. A user-selectable mode input allows the user
to trade off between high efficiency Burst Mode operation
and pulse-skipping mode.
An internally set 2.25MHz switching frequency allows the
use of tiny surface mount inductors and capacitors. Internal
soft-start reduces inrush current during start-up. Both
outputs are internally compensated to work with ceramic
output capacitors. The LTC3419 is available in a low profile
(0.75mm) 3mm × 3mm DFN package. The LTC3419 is also
available in a fixed output voltage configuration selected
via internal resistor dividers (see Table 2).
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents,
including 5481178, 6127815, 6304066, 6498466, 6580258, 6611131.
TYPICAL APPLICATION
Dual Monolithic Buck Regulator in 8-Lead 3 × 3 DFN
VIN
2.5V TO 5.5V
VOUT2
1.8V AT
600mA
10μF
3.3μH
22pF
RUN2 VIN RUN1
MODE
LTC3419
SW2
SW1
3.3μH
22pF
VOUT1
2.5V AT
600mA
10μF
118k
VFB2
VFB1
GND
59k
59k 187k
10μF
3419 TA01
Efficiency and Power Loss
vs Output Current
100 VIN = 3.6V
10
90
80
1
70
60
0.1
50
40
0.01
30
20
10
0
0.1
VOUT = 1.2V
VOUT = 1.8V
VOUT = 2.5V
0.001
0.0001
1
10
100
1000
OUTPUT CURRENT (mA)
3419 TA01b
3419fa
1


Linear Technology Electronic Components Datasheet

LTC3419IMS-1 Datasheet

Dual Monolithic 600mA Synchronous Step-Down Regulator

No Preview Available !

LTC3419
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (VIN) ............................. –0.3 to 6V
VFB1, VFB2 ........................................ –0.3V to VIN + 0.3V
RUN1, RUN2, MODE........................ –0.3V to VIN + 0.3V
SW1, SW2 ....................................... –0.3V to VIN + 0.3V
P-Channel SW Source Current (DC) (Note 2).......800mA
N-Channel SW Source Current (DC) (Note 2) ......800mA
Peak SW Source and Sink Current (Note 2) .............1.3A
Operating Junction Temperature Range
(Note 3) .................................................–40 to 125°C
Junction Temperature (Note 6) ............................. 125°C
Storage Temperature Range...................–65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSOP Package ................................................. 300°C
PIN CONFIGURATION
TOP VIEW
VFB1 1
8 VFB2
RUN1 2
7 RUN2
9
MODE 3
6 SW2
SW1 4
5 VIN
DD PACKAGE
8-LEAD (3mm s 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 40°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
VFB1 1
RUN1 2
MODE 3
SW1 4
GND 5
TOP VIEW
10 VFB2
9 RUN2
8 SW2
7 VIN
6 GND
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 120°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3419EDD#PBF
LTC3419EDD#TRPBF LCQJ
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3419EDD-1#PBF
LTC3419EDD-1#TRPBF LCWW
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3419IDD#PBF
LTC3419IDD#TRPBF
LCQJ
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3419IDD-1#PBF
LTC3419IDD-1#TRPBF LCWW
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3419EMS#PBF
LTC3419EMS#TRPBF LTCQK
10-Lead Plastic MSOP
–40°C to 125°C
LTC3419EMS-1#PBF
LTC3419EMS-1#TRPBF LTCWX
10-Lead Plastic MSOP
–40°C to 125°C
LTC3419IMS#PBF
LTC3419IMS#TRPBF LTCQK
10-Lead Plastic MSOP
–40°C to 125°C
LTC3419IMS-1#PBF
LTC3419IMS-1#TRPBF LTCWX
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/
3419fa
2


Part Number LTC3419IMS-1
Description Dual Monolithic 600mA Synchronous Step-Down Regulator
Maker Linear
PDF Download

LTC3419IMS-1 Datasheet PDF






Similar Datasheet

1 LTC3419IMS-1 Dual Monolithic 600mA Synchronous Step-Down Regulator
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy