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LT1376HVCS#TR

Description
Conv DC-DC 5V to 30V Synchronous Step Down Single-Out 2.42V to 25.8V 1.5A 16-Pin SOIC N T/R
File Size482KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1376HVCS#TR Overview

Conv DC-DC 5V to 30V Synchronous Step Down Single-Out 2.42V to 25.8V 1.5A 16-Pin SOIC N T/R

LT1376HVCS#TR Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
TypeSynchronous Step Down
Output TypeAdjustable
Switching Frequency (kHz)560
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)2.42 to 25.8
Maximum Output Current (A)1.5
Minimum Input Voltage (V)5
Maximum Input Voltage (V)30
Operating Supply Voltage (V)5 to 30
Typical Switch Current (A)2
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)125
Supplier Temperature GradeCommercial
PackagingTape and Reel
Pin Count16
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length10.01(Max)
Package Width3.99(Max)
PCB changed16
Lead ShapeGull-wing
LT1375/LT1376
1.5A, 500kHz Step-Down
Switching Regulators
FEATURES
Constant 500kHz Switching Frequency
Uses All Surface Mount Components
Inductor Size Reduced to 5
µ
H
Easily Synchronizable
Saturating Switch Design: 0.4Ω
Effective Supply Current: 2.5mA
Shutdown Current: 20µA
Cycle-by-Cycle Current Limiting
is current mode for fast transient response and good loop
stability. Both fixed output voltage and adjustable parts are
available.
A special high speed bipolar process and new design
techniques achieve high efficiency at high switching fre-
quency. Efficiency is maintained over a wide output cur-
rent range by using the output to bias the circuitry and by
utilizing a supply boost capacitor to saturate the power
switch. A shutdown signal will reduce supply current to
20µA on both parts. The LT1375 can be externally syn-
chronized from 580kHz to 900kHz with logic level inputs.
The LT1375/LT1376 fit into standard 8-pin PDIP and SO
packages, as well as a fused lead 16-pin SO with much
lower thermal resistance. Full cycle-by-cycle short-cir-
cuit protection and thermal shutdown are provided.
Standard surface mount external parts are used, includ-
ing the inductor and capacitors.
For low input voltage applications with 3.3V output, see
LT1507. This is a functionally identical part that can
operate with input voltages between 4.5V and 12V.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
Portable Computers
Battery-Powered Systems
Battery Charger
Distributed Power
DESCRIPTIO
The LT
®
1375/LT1376 are 500kHz monolithic buck mode
switching regulators. A 1.5A switch is included on the die
along with all the necessary oscillator, control and logic
circuitry. High switching frequency allows a considerable
reduction in the size of external components. The topology
TYPICAL APPLICATIO
5V Buck Converter
D2
1N914
C2
0.1µF
V
SW
LT1376-5 BIAS
L1**
5µH
6V
TO 25V
C3*
10µF TO
50µF
+
DEFAULT
= ON
V
IN
EFFICIENCY (%)
INPUT
BOOST
SHDN
GND
* RIPPLE CURRENT
I
OUT
/2
** INCREASE L1 TO 10µH FOR LOAD CURRENTS ABOVE 0.6A AND TO 20µH ABOVE 1A
FOR INPUT VOLTAGE BELOW 7.5V, SOME RESTRICTIONS MAY APPLY.
SEE APPLICATIONS INFORMATION.
U
U
U
Efficiency vs Load Current
100
V
OUT
= 5V
V
IN
= 10V
L = 10µH
90
OUTPUT**
5V, 1.25A
80
FB
V
C
C
C
3.3nF
D2
1N5818
+
C1
100µF, 10V
SOLID
TANTALUM
70
60
50
0
1375/76 TA01
0.25
0.75
1.00
0.50
LOAD CURRENT (A)
1.25
1375/76 TA02
13756fd
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