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LTC3527EUD#PBF

Description
Output current: 400mA (Switch), 800mA (Switch) Switch operating frequency: 1.2MHz, 2.2MHz Output type: Adjustable Number of output voltage channels: 2 Function type: Step-Up Output configuration: Positive dual channel, 800mA, 1.2MHz , synchronous boost type
CategoryPower/power management    The power supply circuit   
File Size356KB,22 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC3527EUD#PBF Overview

Output current: 400mA (Switch), 800mA (Switch) Switch operating frequency: 1.2MHz, 2.2MHz Output type: Adjustable Number of output voltage channels: 2 Function type: Step-Up Output configuration: Positive dual channel, 800mA, 1.2MHz , synchronous boost type

LTC3527EUD#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVQCCN, LCC16,.12SQ,20
Contacts16
Manufacturer packaging codeUD
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V
Analog Integrated Circuits - Other TypesDUAL SWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5 V
Minimum input voltage0.5 V
Nominal input voltage1.2 V
JESD-30 codeS-PQCC-N16
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current0.8 A
Package body materialPLASTIC/EPOXY
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC16,.12SQ,20
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency2800 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature30
width3 mm
Base Number Matches1
LTC3527/LTC3527-1
Dual 800mA/400mA,
1.2MHz/2.2MHz Synchronous
Step-Up DC/DC Converters
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LTC
®
3527/LTC3527-1 are dual high efficiency, step-up
DC/DC converters in a space saving 16-lead 3mm
×
3mm
QFN package. Battery life is maximized with a 700mV start-
up voltage and operation down to 500mV once started.
The
SHDN
and PGOOD pins enable the converters to be
sequenced or started together.
The LTC3527/LTC3527-1 limit inrush current during start-
up. Selectable 1.2MHz or 2.2MHz operation provides a
choice between the highest efficiency or smallest solu-
tion footprint. The current mode PWM design is internally
compensated reducing external parts count. Burst Mode
operation or fixed frequency operation is selectable via the
MODE pin. Anti-ring circuitry reduces EMI in discontinuous
mode. This device also features thermal shutdown.
True output disconnect allows the output to be completely
open in shutdown. The LTC3527-1 actively discharges
V
OUT1
or V
OUT2
when its respective
SHDN
goes low. Qui-
escent current in shutdown is less than 2μA.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Dual Synchronous Step-Up DC/DC Converters
Delivers 3.3V at 200mA/100mA from one Alkaline/
NiMH Cell, or 3.3V at 400mA/200mA from Two Cells
V
IN
Start-Up Voltage: 700mV
0.5V to 5V V
IN
Range After Start-Up
1.6V to 5.25V V
OUT
Range
Output Disconnect in Shutdown
V
IN
> V
OUT
Operation
1.2MHz or 2.2MHz Operation
Up to 94% Efficiency
12μA Quiescent Current in Burst Mode
®
Operation
Inrush Current Limiting and Soft-Start
Internal Synchronous Rectifiers
Logic-Controlled Shutdown (< 2μA)
Quick V
OUT
Discharge (LTC3527-1)
16-Lead, 0.75mm
×
3mm
×
3mm QFN Package
APPLICATIONS
n
n
n
n
MP3/Personal Media Players
Noise Canceling/Bluetooth Headsets
Wireless Mice
Portable Medical Instruments
TYPICAL APPLICATION
Two-Cell Alkaline to 3.3V/1.8V Synchronous Boost Converters
+
1.6V to 3.2V
V
IN
4.7μF
4.7μH
V
OUT
3.3V
150mA
V
IN1
SW1
V
OUT1
4.7μF
1.78M
1M
15pF
FB1
ON
OFF
ON
OFF
35271 TA01
1.2MHz Efficiency and Power Loss
100
BURST
90 EFFICIENCY
1000
V
IN
V
IN2
SW2
V
OUT2
4.7μH
EFFICIENCY (%)
V
OUT
1.8V
150mA
80
70
60
50
40
30
POWER
20 LOSS
10
BURST
0
0.1
0.01
FIXED
FREQUENCY
100
POWER LOSS (mW)
10
LTC3527
FB2
PGOOD2
SHDN2
GND
F
SEL
PGOOD1
SHDN1
MODE
15pF
619k
1.21M
1
4.7μF
0.1
V
IN
= 2.4V
V
OUT1
= 3.3V
1
10
100
LOAD CURRENT (mA)
0.01
1000
35271 TA01b
35271fc
1

LTC3527EUD#PBF Related Products

LTC3527EUD#PBF LTC3527EUD-1#TR LTC3527EUD#TR LTC3527EUD#TRPBF LTC3527EUD-1#TRPBF LTC3527EUD-1#PBF
Description Output current: 400mA (Switch), 800mA (Switch) Switch operating frequency: 1.2MHz, 2.2MHz Output type: Adjustable Number of output voltage channels: 2 Function type: Step-Up Output configuration: Positive dual channel, 800mA, 1.2MHz , synchronous boost type IC 0.8 A DUAL SWITCHING CONTROLLER, 2800 kHz SWITCHING FREQ-MAX, PQCC16, 3 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WEED-2, QFN-16, Switching Regulator or Controller IC 0.8 A DUAL SWITCHING CONTROLLER, 2800 kHz SWITCHING FREQ-MAX, PQCC16, 3 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WEED-2, QFN-16, Switching Regulator or Controller IC REG BOOST ADJ DL SYNC 16QFN IC REG BOOST ADJ DL SYNC 16QFN IC REG BOOST ADJ DL SYNC 16QFN
Is it Rohs certified? conform to incompatible incompatible conform to conform to conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code QFN QFN QFN QFN QFN QFN
package instruction HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20
Contacts 16 16 16 16 16 16
Reach Compliance Code compliant not_compliant not_compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Other features ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V ALSO OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V
Analog Integrated Circuits - Other Types DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 5 V 5 V 5 V 5 V 5 V 5 V
Minimum input voltage 0.5 V 0.5 V 0.5 V 0.5 V 0.5 V 0.5 V
Nominal input voltage 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V
JESD-30 code S-PQCC-N16 S-PQCC-N16 S-PQCC-N16 S-PQCC-N16 S-PQCC-N16 S-PQCC-N16
JESD-609 code e3 e0 e0 e3 e3 e3
length 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
Humidity sensitivity level 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1
Number of terminals 16 16 16 16 16 16
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Maximum output current 0.8 A 0.8 A 0.8 A 0.8 A 0.8 A 0.8 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN
Encapsulate equivalent code LCC16,.12SQ,20 LCC16,.12SQ,20 LCC16,.12SQ,20 LCC16,.12SQ,20 LCC16,.12SQ,20 LCC16,.12SQ,20
Package shape SQUARE SQUARE SQUARE SQUARE SQUARE SQUARE
Package form CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 260 235 235 260 260 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm
surface mount YES YES YES YES YES YES
Switch configuration SINGLE SINGLE SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency 2800 kHz 2800 kHz 2800 kHz 2800 kHz 2800 kHz 2800 kHz
technology CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level OTHER OTHER OTHER OTHER OTHER OTHER
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location QUAD QUAD QUAD QUAD QUAD QUAD
Maximum time at peak reflow temperature 30 20 20 30 30 30
width 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
Base Number Matches 1 1 1 1 1 1
Brand Name Linear Technology - - Linear Technology Linear Technology Linear Technology
Manufacturer packaging code UD - - UD UD UD
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