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LTC3129EUD-1#PBF

Description
Output current: 200mA Switch operating frequency: 1.2MHz Output type: Programmable Number of output voltage channels: 1 Function type: Step-Up/Step-Down Output configuration: Positive
CategoryPower/power management    DC - DC chip   
File Size2MB,30 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC3129EUD-1#PBF Overview

Output current: 200mA Switch operating frequency: 1.2MHz Output type: Programmable Number of output voltage channels: 1 Function type: Step-Up/Step-Down Output configuration: Positive

LTC3129EUD-1#PBF Parametric

Parameter NameAttribute value
Output voltage (minimum/fixed)2.5V
Output voltage (maximum)15V
Can output current200mA
Switching operating frequency1.2MHz
Output typeProgrammable
Number of output voltage channels1
Minimum input voltage1.92V
Maximum input voltage15V
Power topologyBuck-Boost
Synchronous rectification or notYes
Function typeStep-Up/Step-Down
Output configurationPositive
FeaTures
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LTC3129-1
15V, 200mA Synchronous
Buck-Boost DC/DC Converter
with 1.3µA Quiescent Current
DescripTion
The
LTC
®
3129-1
is a high efficiency, 200mA buck-boost
DC/DC converter with a wide V
IN
and V
OUT
range. It
includes an accurate RUN pin threshold to allow predict-
able regulator turn-on and a maximum power point control
(MPPC) capability that ensures maximum power extraction
from non-ideal power sources such as photovoltaic panels.
The LTC3129-1 employs an ultralow noise, 1.2MHz PWM
switching architecture that minimizes solution footprint by
allowing the use of tiny, low profile inductors and ceramic
capacitors. Built-in loop compensation and soft-start
simplify the design. For high efficiency operation at light
loads, automatic Burst Mode operation can be selected,
reducing the quiescent current to just 1.3µA. To further
reduce part count and improve light load efficiency, the
LTC3129-1 includes an internal voltage divider to provide
eight selectable fixed output voltages.
Additional features include a power good output, less than
10nA of shutdown current and thermal shutdown.
The LTC3129-1 is available in thermally enhanced
3mm × 3mm QFN and 16-lead MSOP packages. For an
adjustable output voltage, see the functionally equivalent
LTC3129.
L,
LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective owners.
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Regulates V
OUT
Above, Below or Equal to V
IN
Wide V
IN
Range: 2.42V to 15V, 1.92V to 15V After
Start-Up (Bootstrapped)
Fixed Output Voltage with Eight User-Selectable
Settings from 2.5V to 15V
200mA Output Current in Buck Mode
Single Inductor
1.3µA Quiescent Current
Programmable Maximum Power Point Control
1.2MHz Ultralow Noise PWM
Current Mode Control
Pin Selectable Burst Mode
®
Operation
Up to 95% Efficiency
Accurate RUN Pin Threshold
Power Good Indicator
10nA Shutdown Current
Thermally Enhanced 3mm
×
3mm QFN and
16-Lead MSOP Packages
Industrial Wireless Sensor Nodes
Post-Regulator for Harvested Energy
Solar Panel Post-Regulator/Charger
Intrinsically Safe Power Supplies
Wireless Microphones
Avionics-Grade Wireless Headsets
applicaTions
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Typical applicaTion
22nF
10µH
22nF
V
IN
2.42V TO 15V
10µF
V
CC
BST1 SW1
V
IN
LTC3129-1
RUN
MPPC
PWM
VS1
VS2
VS3
GND
PGND
31291 TA01a
Efficiency and Power Loss vs Load
100
90
EFFICIENCY
100
POWER LOSS (mW)
10
POWER LOSS
1000
SW2 BST2
V
OUT
EFFICIENCY (%)
V
OUT
5V AT
10µF 100mA V
IN
< V
OUT
200mA V
IN
> V
OUT
80
70
60
50
40
30
20
PGOOD
1
AA OR AAA
BATTERIES
V
CC
2.2µF
V
IN
= 2.5V
0.1
V
IN
= 3.6V
V
IN
= 5V
10
V
IN
= 15V
V
OUT
= 5V
0
0.01
0.01
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
3129 TA01b
31291fc
For more information
www.linear.com/LTC3129-1
1

LTC3129EUD-1#PBF Related Products

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Description Output current: 200mA Switch operating frequency: 1.2MHz Output type: Programmable Number of output voltage channels: 1 Function type: Step-Up/Step-Down Output configuration: Positive IC REG BUCK BST PROG 0.2A 16MSOP IC REG BUCK BST PROG 0.2A 16QFN IC REG BUCK BST PROG 0.2A 16MSOP IC REG BUCK BST PROG 0.2A 16MSOP IC REG BUCK BST PROG 0.2A 16QFN IC REG BUCK BST PROG 0.2A 16QFN IC REG BUCK BST PROG 0.2A 16MSOP
Output type Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable
Output configuration Positive just just just just just just just
Function - Boost/Buck Boost/Buck Boost/Buck Boost/Buck Boost/Buck Boost/Buck Boost/Buck
Topology - buck boost buck boost buck boost buck boost buck boost buck boost buck boost
Number of outputs - 1 1 1 1 1 1 1
Voltage - Input (minimum) - 1.92V 1.92V 1.92V 1.92V 1.92V 1.92V 1.92V
Voltage - input (maximum) - 15V 15V 15V 15V 15V 15V 15V
Voltage - Output (minimum/fixed) - 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V
Voltage - Output (maximum) - 15V 15V 15V 15V 15V 15V 15V
Current - Output - 200mA 200mA 200mA 200mA 200mA 200mA 200mA
Frequency - Switch - 1.2MHz 1.2MHz 1.2MHz 1.2MHz 1.2MHz 1.2MHz 1.2MHz
Synchronous rectifier - yes yes yes yes yes yes yes
Operating temperature - -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Installation type - surface mount surface mount surface mount surface mount surface mount surface mount surface mount
Package/casing - 16-TFSOP (0.118", 3.00mm wide) exposed pad 16-WFQFN Exposed Pad 16-TFSOP (0.118", 3.00mm wide) exposed pad 16-TFSOP (0.118", 3.00mm wide) exposed pad 16-WFQFN Exposed Pad 16-WFQFN Exposed Pad 16-TFSOP (0.118", 3.00mm wide) exposed pad
Supplier device packaging - 16-MSOP-EP 16-QFN(3x3) 16-MSOP-EP 16-MSOP-EP 16-QFN(3x3) 16-QFN(3x3) 16-MSOP-EP
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