Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LT3570 Datasheet(PDF) 4 Page - Linear Technology

Part No. LT3570
Description  1.5A Buck Converter, 1.5A Boost Converter and LDO Controller
Download  20 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo 

LT3570 Datasheet(HTML) 4 Page - Linear Technology

 
Zoom Inzoom in Zoom Outzoom out
 4 / 20 page
background image
LT3570
4
3570fb
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SW2
Error Amplifier 2 Transconductance
195
μMho
Error Amplifier 2 Voltage Gain
100
V/V
VC2 Pin Switching Threshold
700
mV
VC2 to SW2 Current Gain
5.4
A/V
SW2 Current Limit
(Note 7)
1.5
2.4
3.1
A
SW2 VCESAT
ISW2 = 1A (Note 7)
240
mV
SW2 Leakage Current
SW2 = 0V, VIN2 = 40V, VSHDN2 = 0V
0.2
5
μA
BOOST Pin Current
ISW2 = 0.5A
ISW2 = 1.5A
15
30
mA
mA
LDO
LDO Maximum Output Current
VFB3 = 600mV
10
20
mA
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN1,2,3 = 12V, VSHDN1,2,3 = 12V unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3570E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3570I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: VIN2 supplies power for the part. VIN1 supplies power only to the
boost converter. VIN3 supplies power only to the LDO Controller.
Note 4: Shutdown current is for each individual input current.
Note 5: Current flows into the pin.
Note 6: Current flows out of the pin.
Note 7: Switch current limit and switch VCESAT guaranteed by design
and/or correlation to static test.
Note 8: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
range when overtemperature protection is active. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
TYPICAL PERFORMANCE CHARACTERISTICS
Feedback Voltage vs Temperature
Frequency vs Temperature
Soft-Start Current vs Temperature
TEMPERATURE (°C)
–50
0.770
0.775
0.780
0.785
0.790
050
100
150
3570 G01
0.795
0.800
–25
25
75
125
TEMPERATURE (°C)
–50
1500
2000
2500
25
75
150
3570 G02
1000
500
0
–25
0
50
100 125
RT = 7.87k
RT = 20k
RT = 44.2k
TEMPERATURE (°C)
–50
4.4
4.6
4.8
25
50
75
100 125
3570 G03
4.2
4.0
–25
0
150
3.8
3.6
5.0


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn