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LT1310EMSE Datasheet

  • LT1310EMSE

  • 1.5A Boost DC/DC Converter with Phase-Locked Loop

  • 378.32KB

  • 12頁

  • LINER

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LT1310
1.5A Boost
DC/DC Converter
with Phase-Locked Loop
FEATURES
s
s
s
s
DESCRIPTIO
s
s
s
Synchronizable or Constant Frequency
Low Noise Output
Synchronizable Up to 4.5MHz
Wide Input Voltage Range: 2.8V to 18V
Low Profile Surface Mount Solution
(All Ceramic Capacitors)
Low V
CESAT
Switch: 240mV at 1A
Adjustable Output from V
IN
to 35V
Small Thermally Enhanced 10-Lead MSOP Package
The LT
廬
1310 boost DC/DC converter combines a 1.5A
current mode PWM switcher with an integrated phase-
locked loop, allowing the user to set the switching fre-
quency anywhere from 10kHz to 4.5MHz. Intended for use
in applications where switching frequency must be accu-
rately controlled, the LT1310 can generate 12V at up to
400mA from a 5V input.
Switching frequency is set with an external capacitor, and
the device can be operated in either free-running or phase-
locked mode. A wide capture range of nearly 2:1 allows the
free-running frequency to be set using standard
鹵10%
tolerance NP0 dielectric capacitors.
The LT1310 is available in the tiny thermally enhanced
10-lead MSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
Instruments
Avionics
Data Acquisition
Communications
Imaging
Ultrasound
TYPICAL APPLICATIO
V
IN
5V
L1
5.6碌H
C1
4.7碌F
CERAMIC
LT1310
V
IN
SHDN
SYNC
PLL-LPF
V
C
3.01k
1500pF
15k
820pF
C
T
GND*
SW
FB
D1
V
OUT
12V
400mA
178k
90
85
80
75
SHUTDOWN
SYNC
1.6MHz
20.5k
EFFICIENCY (%)
70
65
60
55
50
45
40
35
0
100
200
300
LOAD CURRENT (mA)
400
1310 F01b
100pF
NP0
C2
4.7碌F
CERAMIC
1310 F01a
C1: 4.7碌F, X5R OR X7R, 6.3V
C2: 4.7碌F, X5R OR X7R, 16V
D1: MICROSEMI UPS120 OR EQUIVALENT
L1: PANASONIC ELL6SH-5R6M
*EXPOSED PAD MUST ALSO BE GROUNDED
Figure 1. 5V to 12V Converter Synchronized at 1.6MHz
1310f
U
LT1310 Efficiency
V
OUT
= 12V
3.3V
IN
5V
IN
U
U
1

LT1310EMSE 產(chǎn)品屬性

  • LT1310

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 升壓（升壓）

  • 可調(diào)式

  • 1

  • 2.8 V ~ 35 V

  • 2.8 V ~ 18 V

  • 電流模式

  • 10kHz ~ 4.5MHz

  • 1.5A

  • 無

  • -40°C ~ 85°C

  • 表面貼裝

  • 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤

  • 管件

  • 10-MSOP

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