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LT1614IMS8#PBF

Description
Conv DC-DC 0.92V to 6V Inv Single-Out -24V Automotive 8-Pin MSOP Tube
File Size255KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1614IMS8#PBF Overview

Conv DC-DC 0.92V to 6V Inv Single-Out -24V Automotive 8-Pin MSOP Tube

LT1614IMS8#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
TypeInverting
Output TypeAdjustable
Switching Frequency (kHz)750
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)-24(Min)
Minimum Input Voltage (V)0.92
Maximum Input Voltage (V)6
Operating Supply Voltage (V)0.92 to 6
Typical Switch Current (A)1.2
Typical Quiescent Current (uA)1000
Line Regulation1.1%/V
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTube
Pin Count8
Standard Package NameSOP
Supplier PackageMSOP
MountingSurface Mount
Package Height0.86
Package Length3
Package Width3
PCB changed8
Lead ShapeGull-wing
LT1614
Inverting 600kHz
Switching Regulator
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Better Regulation Than a Charge Pump
0.1
Effective Output Impedance
– 5V at 200mA from a 5V Input
600kHz Fixed Frequency Operation
Operates with V
IN
as Low as 1V
1mA Quiescent Current
Low Shutdown Current: 10µA
Low-Battery Detector
Low V
CESAT
Switch: 295mV at 500mA
The LT
®
1614 is a fixed frequency, inverting mode switch-
ing reglator that operates from an input voltage as low as
1V. Utilizing a low noise topology, the LT1614 can gener-
ate a negative output down to – 24V from a 1V to 5V input.
Fixed frequency switching ensures a clean output free
from low frequency noise. The device contains a low-
battery detector with a 200mV reference and shuts down
to less than 10µA. No load quiescent current of the LT1614
is 1mA and the internal NPN power switch handles a
500mA current with a voltage drop of just 295mV.
High frequency switching enables the use of small induc-
tors and capacitors. Ceramic capacitors can be used in
many applications, eliminating the need for bulky tanta-
lum types.
The LT1614 is available in 8-lead MSOP or SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
MR Head Bias
LCD Bias
GaAs FET Bias
Positive-to-Negative Conversion
TYPICAL APPLICATIO
L1
22µH
C3
1µF
V
IN
5V
L2
22µH
5V to – 5V Converter Efficiency
90
+
V
IN
C1
33µF
100k
1nF
SW
69.8k
D1
24.9k
EFFICIENCY (%)
C1, C2: AVX TAJB336M010
C3: TAIYO YUDEN EMK316BJ105MF
D1: MBR0520
L1, L2: MURATA LQH3C220
Figure 1. 5V to – 5V/200mA Converter
+
SHDN
LT1614
V
C
NFB
GND
V
OUT
– 5V
200mA
C2
33µF
80
70
60
1614 TA01
50
40
3
100
10
30
LOAD CURRENT (mA)
300
1614 TA02
U
U
U
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