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LTC3245IDE#PBF

Description
LTC3245 - Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C
CategoryPower/power management    The power supply circuit   
File Size1MB,6 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC3245IDE#PBF Overview

LTC3245 - Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C

LTC3245IDE#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Objectid1281742188
Parts packaging codeDFN
package instruction3 X 4 MM, LEAD FREE, PLASTIC, MO-229WGED, DFN-12
Contacts12
Manufacturer packaging codeDE/UE
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 2.7V TO 38V; ALSO OPERATES AT 5V
Analog Integrated Circuits - Other TypesSWITCHED CAPACITOR REGULATOR
Maximum input voltage38 V
Minimum input voltage2.7 V
Nominal input voltage12 V
JESD-30 codeR-PDSO-N12
JESD-609 codee3
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals12
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current0.25 A
Nominal output voltage3.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeSOLCC12,.12,20
Package shapeRECTANGULAR
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBUCK-BOOST
technologyCMOS
Temperature levelAUTOMOTIVE
Terminal surfaceMATTE TIN
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3 mm
DEMO MANUAL DC1802A
LTC3245EMSE
Wide V
IN
Range, Low Noise
250mA Buck-Boost Charge Pump
Description
Demonstration circuit DC1802A is a wide V
IN
range, low
noise, 250mA buck-boost charge pump featuring the
LTC
®
3245EMSE.
Design files for this circuit board are available at
http://www.linear.com/demo
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.
performance summary
SYMBOL
V
IN
V
OUT1
V
OUT2
V
FB
I
VOUT
PARAMETER
Input Voltage Range
Output Voltage
Output Voltage
Feedback Voltage
Output Current
Specifications are at T
A
= 25°C
CONDITIONS
SEL2 = HIGH, SEL1 = LOW
SEL2 = HIGH, SEL1 = HIGH
SEL2 = LOW SEL1 = HIGH
V
IN
> 5V, V
OUT
±4%, Burst Mode
®
Operation
V
IN
> 5V, V
OUT
±4%, Low Noise Mode
MIN
2.7
4.80
3.168
1.176
1.200
TYP
MAX
38
5.20
3.432
1.224
250
200
UNITS
V
V
V
V
mA
mA
assembly test proceDure
Refer to Figure 1 for the proper measurement equipment
setup and jumper settings and follow the procedure below.
Note: When measuring the input or output voltage ripple,
care must be taken to avoid a long ground lead on the
oscilloscope probe. Measure the input or output voltage
ripple by touching the probe tip directly across the VBUS
or VOUT(x) and GND terminals. See Figure 2 for proper
scope probe technique.
1. Set PS1 = 13V, LD1 = 0A, SEL2 = HIGH, and SEL1 =
HIGH. Observe VOUT (VM2).
2. Set LD1 = 250mA. Observe VOUT (VM2).
3. Set SEL1 = LOW, LD1 = 0A. Observe VOUT (VM2).
4. Set LD1 to 250mA. Observe VOUT (VM2).
5. The value of V
OUT
can be programmed to any desired
value by populating R1 and R2.
dc1802af
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