Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LT3430 Datasheet(PDF) 3 Page - Linear Technology

Part # LT3430
Description  High Voltage, 3A, 200kHz/100kHz Step-Down Switching Regulators
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3430 Datasheet(HTML) 3 Page - Linear Technology

  LT3430_15 Datasheet HTML 1Page - Linear Technology LT3430_15 Datasheet HTML 2Page - Linear Technology LT3430_15 Datasheet HTML 3Page - Linear Technology LT3430_15 Datasheet HTML 4Page - Linear Technology LT3430_15 Datasheet HTML 5Page - Linear Technology LT3430_15 Datasheet HTML 6Page - Linear Technology LT3430_15 Datasheet HTML 7Page - Linear Technology LT3430_15 Datasheet HTML 8Page - Linear Technology LT3430_15 Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 28 page
background image
LT3430/LT3430-1
3
34301fa
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: Gain is measured with a VC swing equal to 200mV above the low
clamp level to 200mV below the upper clamp level.
Note 3: Minimum input voltage is not measured directly, but is guaranteed
by other tests. It is defined as the voltage where internal bias lines are still
regulated so that the reference voltage and oscillator remain constant.
Actual minimum input voltage to maintain a regulated output will depend
upon output voltage and load current. See Applications Information.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 5: Boost current is the current flowing into the BOOST pin with the
pin held 5V above input voltage. It flows only during switch on time.
Note 6: Input supply current is the quiescent current drawn by the input
pin when the BIAS pin is held at 5V with switching disabled. Bias supply
current is the current drawn by the BIAS pin when the BIAS pin is held
at 5V. Total input referred supply current is calculated by summing input
supply current (IVIN) with a fraction of bias supply current (IBIAS):
ITOTAL = IVIN + (IBIAS)(VOUT/VIN)
With VIN = 15V, VOUT = 5V, IVIN = 1.4mA, IBIAS = 2.9mA, ITOTAL = 2.4mA.
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. VIN = 15V, VC = 1.5V, ⎯S⎯H⎯D⎯N = 1V, BOOST = Open Circuit,
SW = Open Circuit, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Switch Duty Cycle (LT3430-1)
96
94
98
%
%
Switch Frequency (LT3430)
VC Set to Give DC = 50%
184
172
200
200
216
228
kHz
kHz
Switch Frequency (LT3430-1)
88
85
100
100
115
120
kHz
kHz
fSW Line Regulation
5.5V ≤ VIN ≤ 60V
0.05
0.15
%/V
fSW Shifting Threshold
Df = 10kHz
0.8
V
Minimum Input Voltage
(Note 3)
4.6
5.5
V
Minimum Boost Voltage
(Note 4) ISW ≤ 2.5A
1.8
3
V
Boost Current (Note 5)
Boost = VIN + 5V, ISW = 0.75A
Boost = VIN + 5V, ISW = 2.5A
25
75
50
120
mA
mA
Input Supply Current (IVIN)
(Note 6) VBIAS = 5V
1.5
2.2
mA
Bias Supply Current (IBIAS)
(Note 6) VBIAS = 5V
3.1
4.2
mA
Shutdown Supply Current
⎯S⎯H⎯D⎯N = 0V, VIN ≤ 60V, SW = 0V, VC Open
30
100
200
µA
µA
Lockout Threshold
VC Open
2.3
2.42
2.53
V
Shutdown Threshold
VC Open, Shutting Down
VC Open, Starting Up
0.15
0.25
0.37
0.42
0.58
0.60
V
V
Minimum SYNC Amplitude
1.5
V
SYNC Frequency Range (LT3430)
228
700
kHz
SYNC Frequency Range (LT3430-1)
125
250
kHz
SYNC Input Resistance
20
Note 7: Switch on resistance is calculated by dividing VIN to SW voltage
by the forced current (3A). See Typical Performance Characteristics for the
graph of switch voltage at other currents.
Note 8: The LT3430EFE/LT3430EFE-1 are 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 LT3430IFE/LT3430IFE-1 are guaranteed over the full –40°C to 125°C
operating junction temperature range.
Note 9: See Peak Switch Current Limit vs Junction Temperature graph in
the Typical Performance Characteristics section.
Note 10: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 11: The maximum operational Boost-SW voltage is limited by
thermal and load current constraints. See ‘Boost Pin’ and ‘Thermal
Calculations’ in the Applications Information section.


Similar Part No. - LT3430_15

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LT3430-1 LINER-LT3430-1 Datasheet
326Kb / 28P
   High Voltage, 3A,200kHz/100kHz Step-Down Switching Regulators
LT3430-1 LINER-LT3430-1_15 Datasheet
332Kb / 28P
   High Voltage, 3A, 200kHz/100kHz Step-Down Switching Regulators
More results

Similar Description - LT3430_15

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LT3430-1 LINER-LT3430-1_15 Datasheet
332Kb / 28P
   High Voltage, 3A, 200kHz/100kHz Step-Down Switching Regulators
LT3430-1 LINER-LT3430-1 Datasheet
326Kb / 28P
   High Voltage, 3A,200kHz/100kHz Step-Down Switching Regulators
LT3430 LINER-LT3430 Datasheet
302Kb / 28P
   High Voltage, 3A, 200kHz Step-Down Switching Regulator
logo
Gamma Microelectronics ...
GM7130 GAMMA-GM7130_1 Datasheet
142Kb / 9P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
GM7130 GAMMA-GM7130 Datasheet
244Kb / 14P
   3A STEP-DOWN VOLTAGE SWITCHING REGULATORS
GM7130HV GAMMA-GM7130HV Datasheet
143Kb / 9P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
logo
Shanghai Leiditech Elec...
GM7130HV LEIDITECH-GM7130HV Datasheet
696Kb / 10P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
logo
Gamma Microelectronics ...
GM7130_1312 GAMMA-GM7130_1312 Datasheet
2Mb / 10P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
GM7130 GAMMA-GM7130_13 Datasheet
501Kb / 10P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
GM7130HV GAMMA-GM7130HV_13 Datasheet
470Kb / 10P
   3A STEP DOWN VOLTAGE SWITCHING REGULATORS
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com