OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC3104IDE#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
LTC3104
1
3104fa
For more information www.linear.com/LTC3104
TYPICAL APPLICATION
FEATURES DESCRIPTION
2.6µA Quiescent Current,
15V, 300mA Synchronous
Step-Down DC/DC
Converter and 10mA LDO
The LTC
®
3104 is a high efficiency, monolithic synchronous
step-down converter using a current mode architecture
capable of supplying 300mA of output current. The
LTC3104 includes an integrated, adjustable 10mA LDO
to power noise sensitive functions.
The LTC3104 offers two operational modes: automatic
Burst Mode operation and forced continuous mode allow-
ing the user to optimize output voltage ripple, noise and
light load efficiency. With Burst Mode operation enabled,
the typical DC input supply current at no load drops to
2.6µA, maximizing the efficiency for light loads. Selec-
tion of forced continuous mode provides very low noise
constant frequency, 1.2MHz operation.
Additionally, the LTC3104 includes an accurate RUN com-
parator, thermal overload protection, a power good output
and an integrated soft-start feature to guarantee that the
power system start-up is well controlled.
Efficiency vs Output Current
APPLICATIONS
n
Ultralow Quiescent Current: 2.6µA
n
Synchronous Rectification Efficiency Up to 95%
n
Wide V
IN
Range: 2.5V to 15V
n
Wide V
OUT
Range: 0.6V to 13.8V
n
300mA Output Current
n
User-Selectable Automatic Burst Mode
®
Operation
or Forced Continuous Operation
n
Accurate and Programmable RUN Pin Threshold
n
1.2MHz Fixed Frequency PWM
n
Internal Compensation
n
Power Good Status Output for V
OUT
n
10mA Adjustable LDO
n
Available in Thermally Enhanced 3mm × 4mm ×
0.75mm, 14-Lead DFN and 16-Lead MSOP Packages
n
Remote Sensor Networks
n
Distributed Power Systems
n
Multicell Battery or SuperCap Regulator
n
Energy Harvesters
n
Portable Instruments
n
Low Power Wireless Systems
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
V
IN
22nF
BST3V TO 15V
ON
OFF
RUN
SW
RUNLDO
MODE
V
CC
PGOOD
FBLDO
V
INLDO
V
LDO
FB
LTC3104
GND
412k
10µH
2.2V
300mA
1.8V
10mA
3104 TA01a
27pF 47µF
4.7µF
1µF
10µF
825k
1.78M
665k
ON
OFF
OUTPUT CURRENT (A)
65
EFFICIENCY (%)
POWER LOSS (mW)
95
100
60
55
90
75
85
80
70
0.0001 0.01 0.1 1
3104 TA01b
50 0.1
1
10
100
0.001
V
IN
= 3V
V
IN
= 5V
V
IN
= 10V
V
IN
= 15V
LTC3104
2
3104fa
For more information www.linear.com/LTC3104
ABSOLUTE MAXIMUM RATINGS
V
IN
............................................................. –0.3V to 18V
SW
................................................ –0.3V to (V
IN
+ 0.3V)
FB, FBLDO
.................................................... –0.3V to 6V
BST
........................................ (SW – 0.3V) to (SW + 6V)
V
INLDO
........................................................ –0.3V to 17V
V
LDO
........................................................... –0.3V to 17V
RUN, MODE, RUNLDO
............................... –0.3V to V
IN
V
CC
, PGOOD ................................................. –0.3V to 6V
(Note 1)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3104EDE#PBF LTC3104EDE#TRPBF 3104 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LTC3104IDE#PBF LTC3104IDE#TRPBF 3104 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C
LTC3104EMSE#PBF LTC3104EMSE#TRPBF 3104 16-Lead Plastic MSOP –40°C to 125°C
LTC3104IMSE#PBF LTC3104IMSE#TRPBF 3104 16-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.
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//. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
INLDO
V
LDO
FBLDO
FB
RUN
V
CC
NC
MODE
V
IN
SW
BST
GND
RUNLDO
PGOOD
TOP VIEW
15
GND
DE PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 53°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
NC
MODE
V
IN
SW
BST
GND
RUNLDO
PGOOD
16
15
14
13
12
11
10
9
NC
V
INLDO
V
LDO
FBLDO
FB
RUN
V
CC
NC
TOP VIEW
17
GND
MSE PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 40°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
Operating Junction Temperature Range
(Notes 2, 3)
............................................ –40°C to 125°C
Storage Temperature Range
.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSE Only ..........................................................300°C
http://www.linear.com/product/LTC3104#orderinfo
LTC3104
3
3104fa
For more information www.linear.com/LTC3104
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 2). V
IN
= V
INLDO
= 10V unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Step-Down Converter
Input Voltage Range
After Start-Up
l
l
2.6
2.5
15 V
Input Undervoltage Lockout Threshold V
IN
Rising
V
IN
Rising, T
J
= 0°C to 85°C (Note 4)
l
2.1
2.1
2.6
2.5
V
V
Input Undervoltage Lockout Hysteresis (Note 4) 0.4 V
Feedback Voltage (Note 5)
l
0.588 0.6 0.612 V
Feedback Voltage Line Regulation V
IN
= 2.5V to 15V (Note 5) 0.02 0.05 %/V
Feedback Input Current (Note 5)
l
1 20 nA
Oscillator Frequency
T
J
= 0°C to 85°C (Note 4)
l
0.93
1.0
1.2
1.2
1.55
1.45
MHz
MHz
Quiescent Current, V
IN
—Active RUN = V
IN
, RUNLDO = V
IN
, MODE = 0V,
FB > 0.612, Nonswitching
600 µA
Quiescent Current, V
IN
—Sleep T
J
= 0°C to 85°C, RUN = MODE = V
IN
, FB > 0.612
RUNLDO = V
IN
(Note 4)
RUNLDO = 0V (Note 4)
2.6
1.8
3.3
2.6
µA
µA
RUN = MODE = V
IN
, FB > 0.612
RUNLDO = V
IN
RUNLDO = 0V
l
l
2.8
1.8
5.5
4.5
µA
µA
Quiescent Current, V
IN
—Shutdown
RUN = 0V, RUNLDO = 0V, T
J
= 0°C to 85°C (Note 4)
RUN = 0V, RUNLDO = 0V
l
1
1
1.7
3.3
µA
µA
N-Channel MOSFET Synchronous Rectifier Leakage
Current
V
IN
= V
SW
=15V, V
RUN
= 0V 0.01 0.3 µA
N-Channel MOSFET Switch Leakage Current V
IN
=15V, V
SW
= 0V, V
RUN
= 0V 0.01 0.3 µA
N-Channel MOSFET Synchronous Rectifier R
DS(ON)
I
SW
= 200mA 0.85 Ω
N-Channel MOSFET Switch R
DS(ON)
I
SW
= –200mA 0.65 Ω
Peak Current Limit
l
0.40 0.50 0.75 A
PGOOD Threshold FB Falling, Percentage Below FB –14 –10 –5 %
PGOOD Hysteresis Percentage of FB 2 %
PGOOD Voltage Low I
PGOOD
= 100µA 0.2 V
PGOOD Leakage Current V
PGOOD
= 5V 0.01 0.3 µA
Maximum Duty Cycle
l
89 92 %
Switch Minimum Off Time (t
OFF(MIN)
) (Note 4) 65 ns
Synchronous Rectifier Minimum On Time (t
ON(MIN)
) (Note 4) 70 ns
RUN Pin Threshold RUN Pin Rising
l
0.76 0.8 0.85 V
RUN Pin Hysteresis 0.06 V
RUN Input Current RUN = 1.2V
l
0.01 0.4 µA
MODE Threshold
l
0.5 0.8 1.2 V
MODE Input Current MODE = 1.2V 0.1 4 µA
Soft-Start Time V
IN
= 5V 0.7 1.4 2.5 ms
LDO Regulator
LDO Input Voltage Range (V
IN(LDO)
)
l
2.5 15 V
LDO Output Voltage Range (V
LDO
) I
LDO
= 1mA
l
0.6 14.5 V
LDO Feedback Voltage
l
0.576 0.6 0.624 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

LTC3104IDE#PBF

Mfr. #:
Buy LTC3104IDE#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 300mA, 15V Step-Down DC/DC Converter with Ultralow Quiescent Current and 10mA LDO
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet