LT1310EMSE Linear Technology, LT1310EMSE Datasheet

IC DC/DC CONV 1.5A BOOST 10-MSOP

LT1310EMSE

Manufacturer Part Number
LT1310EMSE
Description
IC DC/DC CONV 1.5A BOOST 10-MSOP
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet

Specifications of LT1310EMSE

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
2.8 ~ 35 V
Current - Output
1.5A
Frequency - Switching
10kHz ~ 4.5MHz
Voltage - Input
2.8 ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-

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Part Number
Manufacturer
Quantity
Price
Part Number:
LT1310EMSE
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT1310EMSE
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1310EMSE#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1310EMSE#TR
Manufacturer:
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Quantity:
285
FEATURES
TYPICAL APPLICATIO
APPLICATIO 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
Adjustable Output from V
Small Thermally Enhanced 10-Lead MSOP Package
Instruments
Avionics
Data Acquisition
Communications
Imaging
Ultrasound
SHUTDOWN
CESAT
1.6MHz
SYNC
V
5V
Figure 1. 5V to 12V Converter Synchronized at 1.6MHz
IN
Switch: 240mV at 1A
C1: 4.7 F, X5R OR X7R, 6.3V
C2: 4.7 F, X5R OR X7R, 16V
D1: MICROSEMI UPS120 OR EQUIVALENT
L1: PANASONIC ELL6SH-5R6M
*EXPOSED PAD MUST ALSO BE GROUNDED
1500pF
U
C1
4.7 F
CERAMIC
3.01k
IN
SHDN
SYNC
PLL-LPF
V
V
IN
to 35V
C
15k
LT1310
5.6 H
820pF
U
L1
GND*
SW
FB
C
T
D1
100pF
NP0
178k
20.5k
1310 F01a
C2
4.7 F
CERAMIC
DESCRIPTIO
The LT
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 10%
tolerance NP0 dielectric capacitors.
The LT1310 is available in the tiny thermally enhanced
10-lead MSOP package.
V
12V
400mA
OUT
, LTC and LT are registered trademarks of Linear Technology Corporation.
with Phase-Locked Loop
®
1310 boost DC/DC converter combines a 1.5A
90
85
80
75
70
65
60
55
50
45
40
35
DC/DC Converter
U
0
V
OUT
= 12V
100
LT1310 Efficiency
LOAD CURRENT (mA)
3.3V
IN
200
1.5A Boost
300
LT1310
5V
1310 F01b
IN
sn1310 1310fs
400
1

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LT1310EMSE Summary of contents

Page 1

... A wide capture range of nearly 2:1 allows the free-running frequency to be set using standard 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 OUT 12V 400mA ...

Page 2

... Shutdown Mode Note 2: The LT1310E is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, chacterization and correlation with statistical process controls ORDER PART NUMBER LT1310EMSE MSE PART MARKING = 40 C/W LTRZ MIN TYP MAX UNITS 2 ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Feedback Voltage 1.27 1.26 1.25 1.24 1.23 1.22 – 100 –25 TEMPERATURE ( C) 1310 G01 Oscillator Frequency vs C Capacitor T 6000 PLL-LPF = HIGH 5000 4000 3000 ...

Page 4

LT1310 W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Minimum On Time 100 –50 – 100 TEMPERATURE ( C) 1310 G10 Supply Current –50 ...

Page 5

CTIO S FB (Pin 1): Feedback Pin for Error Amplifier. Connect the resistor divider here to set output voltage according to the formula: V OUT V = 1.255(1 + R1/R2) OUT Minimize trace area at ...

Page 6

LT1310 W BLOCK DIAGRA FB 1 – 1.255V REF SHDN 2 SHUTDOWN GND EXPOSED 5 PAD U OPERATIO To understand operation, refer to the Block Diagram. The LT1310 contains a boost switching regulator that can be phase locked ...

Page 7

U OPERATIO C Selection for Operating Frequency T To synchronize to an external input signal, the timing capacitor and PLL filter components must be chosen properly. This is a simple process and can be done using the graph in Figure ...

Page 8

LT1310 U U APPLICATIO S I FOR ATIO Inductor Selection Several inductors that work well with the LT1310 are listed in Table 2. This table is not exclusive; there are many other manufacturers and inductors that can be used. Consult ...

Page 9

U U APPLICATIO S I FOR ATIO V OUT 100mV/DIV AC COUPLED I L 0.5A/DIV 200 s/DIV C Figure 3a. Transient Response Shows Excessive Ringing V OUT 100mV/DIV AC COUPLED I L 0.5A/DIV 200 ...

Page 10

LT1310 U U APPLICATIO S I FOR ATIO – 1.255V + REFERENCE – COMPENSATION CAPACITOR OUTPUT CAPACITOR OUT g : TRANSCONDUCTANCE ...

Page 11

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... Synchronous Step-Up DC/DC Converters SW LTC3401 3MHz, Synchronous Step-Up DC/DC Converter SW LTC3402 3MHz, Synchronous Step-Up DC/DC Converter SW ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 OUT 85 12V 400mA ...

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