LTM8027EV#PBF Linear Technology, LTM8027EV#PBF Datasheet

IC BUCK SYNC ADJ 4A 113LGA

LTM8027EV#PBF

Manufacturer Part Number
LTM8027EV#PBF
Description
IC BUCK SYNC ADJ 4A 113LGA
Manufacturer
Linear Technology
Series
µModuler
Type
Point of Load (POL) Non-Isolatedr
Datasheet

Specifications of LTM8027EV#PBF

Design Resources
LTM8027 Spice Model
Output
2.5 ~ 24 V
Number Of Outputs
1
Power (watts)
96W
Mounting Type
Surface Mount
Voltage - Input
4.5 ~ 60 V
Package / Case
113-LGA
1st Output
2.5 ~ 24 VDC @ 4A
Size / Dimension
0.59" L x 0.59" W x 0.17" H (15mm x 15mm x 4.32mm)
Power (watts) - Rated
96W
Operating Temperature
-40°C ~ 125°C
Efficiency
95%
Primary Input Voltage
60V
No. Of Outputs
1
Output Voltage
24V
Output Current
4A
No. Of Pins
113
Operating Temperature Range
-40°C To +125°C
Voltage Regulator Type
Buck DC/DC Converter
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM8027EV#PBFLTM8027EV
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTM8027EV#PBF
Manufacturer:
SEMIKRON
Quantity:
116
FEATURES
APPLICATIONS
n
n
n
n
n
n
n
n
n
n
n
n
n
n
TYPICAL APPLICATION
16V TO 60V
Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 60V
(7.5V Minimum Voltage to Start)
Wide Output Voltage Range: 2.5V to 24V
(See Table 2)
4A Output Current
Programmable Soft-Start
9µA Shutdown Supply Current
Selectable Switching Frequency Current Mode
Control
Up to 95% Efficiency
Pb-Free (e4) RoHS Compliant Package with
Gold Pad Finish
Tiny, Low Profile (15mm × 15mm × 4.32mm)
Surface Mount LGA Package
12V and 42V Automotive and Heavy Equipment
48V Telecom Power Supplies
Avionics and Industrial Control Systems
Distributed Power Converters
V
48W, 16V
IN
4.7µF
×2
IN
to 60V
1M
48.7k
IN
DC/DC µModule
V
RUN
SS
SYNC
RT
IN
LTM8027
GND
BIAS1
BIAS2
V
AUX
ADJ
OUT
®
Regulator
56.2k
3845 TA01a
22µF
×4
V
12V
4A
OUT
DESCRIPTION
The LTM
supply. Included in the package are the switching control-
ler, power switches, inductor and all support components.
Operating over an input voltage range of 4.5V to 60V (7.5V
minimum voltage to start), the LTM8027 supports output
voltages up to 24V, and a switching frequency range of
100kHz to 500kHz, each set by a single resistor. Only the
bulk input and output filter capacitors are needed to finish
the design.
The low profile package (4.32mm) enables utilization of
unused space on the bottom of PC boards for high den-
sity point of load regulation. A built-in soft-start timer is
adjustable with a small capacitor.
The LTM8027 is packaged in a thermally enhanced, compact
(15mm × 15mm) and low profile (4.32mm) over-molded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8027 is Pb-free and RoHS compliant.
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
®
8027 is a complete 4A, DC/DC step-down power
100
60
90
80
70
50
40
30
20
10
0
µModule Regulator
0
24V
IN
60V, 4A DC/DC
Efficiency vs Load
1
LOAD (A)
2
3
LTM8027
8027 TA01b
4
8027fa
1

Related parts for LTM8027EV#PBF

LTM8027EV#PBF Summary of contents

Page 1

... The LTM8027 is Pb-free and RoHS compliant. L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Regulator ® ...

Page 2

... Maximum Soldering Temperature ......................... 245°C Storage Temperature Range .................. –55°C to 125°C ORDER INFORMATION LEAD FREE FINISH TRAY LTM8027EV#PBF LTM8027EV#PBF LTM8027IV#PBF LTM8027IV#PBF LTM8027MPV#PBF LTM8027MPV#PBF Consult LTC Marketing for parts specified with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V ADJ Voltage ADJ I Quiescent Current into IN Q(VIN) V BIAS1 Undervoltage Lockout (Rising) BIAS1 BIAS1 Undervoltage Lockout (Falling) I Current into BIAS1 BIAS1 V Minimum BIAS2 Voltage ...

Page 4

LTM8027 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load 2.5V OUT 100 12V IN 24V IN 10 36V LOAD (A) 8027 G01 Efficiency vs ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Input Current vs Load 2.5V OUT 3000 5V IN 12V IN 2500 24V IN 36V IN 2000 1500 1000 500 LOAD (A) 8027 G43 Input Current vs Load ...

Page 6

LTM8027 TYPICAL PERFORMANCE CHARACTERISTICS Bias Current vs Load 3.3V OUT 18.0 17.5 17.0 16.5 16.0 15.5 15.0 48V IN 36V IN 14.5 24V IN 12V IN 14 LOAD (A) 8027 G18 Bias Current vs ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Minimum V vs Load 12V OUT 16.0 15.5 15.0 14.5 14.0 13.5 13.0 12.5 12 LOAD (A) 8027 G27 Minimum V vs Load 24V OUT 32 30 ...

Page 8

LTM8027 TYPICAL PERFORMANCE CHARACTERISTICS Temperature Rise vs Load 2.5V OUT 42 36V IN 24V 37 IN 12V LOAD (A) 8027 G35 Temperature Rise vs ...

Page 9

PIN FUNCTIONS V (Bank 3): The V pins supply current to the LTM8027’ internal regulator and to the internal power switch. These pins must be locally bypassed with an external, low ESR capacitor (see Table 2). V (Bank ...

Page 10

LTM8027 BLOCK DIAGRAM V IN RUN SS SYNC OPERATION The LTM8027 is a standalone nonisolated step-down switching DC/DC power supply with an input voltage range of 4.5V to 60V that can deliver output current. This module ...

Page 11

APPLICATIONS INFORMATION For most applications, the design process is straight forward, summarized as follows: 1. Look at Table 2 and find the row that has the desired input range and output voltage. 2. Apply the recommended ...

Page 12

LTM8027 APPLICATIONS INFORMATION For example, suppose the LTM8027 needs to provide 5V from an input voltage source that is nominally 12V. From Table 2, the recommended R value is 162k, which cor- T responds to an operating frequency of 210kHz. ...

Page 13

APPLICATIONS INFORMATION Table 1 lists typical resistor values for common operating frequencies. Table 1. R Resistor Values vs Frequency T R (kΩ) T 187 118 82.5 63.4k 48.7k 40.2k 31.6k 27.4k 23. recommended that the user apply the ...

Page 14

... LTM8027. However, these capacitors can cause problems if the LTM8027 is plugged into a live supply (see Linear Technology Application Note 88 for 14 a complete discussion). The low loss ceramic capacitor combined with stray inductance in series with the power ...

Page 15

APPLICATIONS INFORMATION SS RUN R Ensure that the grounding and heatsinking are acceptable. A few rules to keep in mind are: 1. Place the R and R resistors as close as possible to ADJ T their respective pins. 2. Place ...

Page 16

LTM8027 APPLICATIONS INFORMATION The junction-to-air and junction-to-board thermal resis- tances given in the Pin Configuration diagram may also be used to estimate the LTM8027 internal temperature. These thermal coefficients are determined per JESD 51-9 (JEDEC standard, test boards for area ...

Page 17

TYPICAL APPLICATIONS 4.5V TO 40V 7.5V TO 60V 3.3V V Step-Down Converter OUT OUT 10µF 1M LTM8027 ×2 RUN BIAS1 SS BIAS2 AUX SYNC RT ADJ GND 102k *RUNNING VOLTAGE. SEE APPLICATIONS INFORMATION FOR ...

Page 18

LTM8027 TYPICAL APPLICATIONS 26V TO 60V V IN 20V TO 48V PACKAGE PHOTOGRAPH 18 18V V Step-Down Converter OUT OUT 4.7µF 1M LTM8027 ×2 RUN BIAS1 SS BIAS2 AUX SYNC RT ADJ GND 31.6k –12V ...

Page 19

PACKAGE DESCRIPTION Z Z bbb // 6.350 5.080 3.810 2.540 1.270 0.000 1.270 2.540 3.810 5.080 6.350 LTM8027 8027fa 19 ...

Page 20

LTM8027 PACKAGE DESCRIPTION PIN NAME A1 GND A2 ADJ A3 BIAS2 A4 RUN BIAS1 A7 AUX A8 GND A9 GND A10 GND A11 GND GND B3 GND B4 GND B5 GND B6 GND B7 ...

Page 21

... Updated Typical Applications Updated Related Parts 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTM8027 ...

Page 22

... LGA OUT ≤ 5V, 6.25mm × 6.25mm × 2.32mm LGA OUT ≤ 5V, 9mm × 11.25mm × 2.82mm LGA, OUT ≤ 5V, 9mm × 11.25mm × 2.82mm LGA, OUT LT 0111 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2009 8027fa ...

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