LTM8032IV#PBF Linear Technology, LTM8032IV#PBF Datasheet

IC BUCK ADJ 2A 71LGA

LTM8032IV#PBF

Manufacturer Part Number
LTM8032IV#PBF
Description
IC BUCK ADJ 2A 71LGA
Manufacturer
Linear Technology
Series
µModuler
Type
Point of Load (POL) Non-Isolatedr
Datasheet

Specifications of LTM8032IV#PBF

Design Resources
LTM8032 Spice Model
Output
0.8 ~ 10 V
Number Of Outputs
1
Power (watts)
20W
Mounting Type
Surface Mount
Voltage - Input
3.6 ~ 36 V
Package / Case
71-LGA
1st Output
0.8 ~ 10 VDC @ 2A
Size / Dimension
0.59" L x 0.35" W x 0.11" H (15mm x 9mm x 2.8mm)
Power (watts) - Rated
20W
Operating Temperature
-40°C ~ 125°C
Approvals
EN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM8032IV#PBFLTM8032IV
Manufacturer:
LT/凌特
Quantity:
20 000
Company:
Part Number:
LTM8032IV#PBF
Manufacturer:
LT
Quantity:
1 492
Company:
Part Number:
LTM8032IV#PBF
Manufacturer:
LINEAR
Quantity:
20 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
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n
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7VDC TO 36VDC
Complete Step-Down Switch Mode Power Supply
Wide Input Voltage Range: 3.6V to 36V
2A Output Current
0.8V to 10V Output Voltage
Selectable Switching Frequency: 200kHz to 2.4MHz
EN55022 Class B Compliant
Current Mode Control
(e4) RoHS Compliant Package with Gold Pad Finish
Programmable Soft-Start
Low Profi le (9mm × 15mm × 2.82mm)
Surface Mount LGA Package
Automotive Battery Regulation
Power for Portable Products
Distributed Supply Regulation
Industrial Supplies
Wall Transformer Regulation
Ultralow Noise 5V/2A DC/DC μModule Regulator
V
IN
*
*RUNNING VOLTAGE RANGE.
SEE APPLICATIONS FOR START-UP DETAILS
2.2μF
f
SW
44.2k
= 700kHz
V
FIN
RUN/SS
SHARE
RT
IN
SYNC GND
LTM8032
PGOOD
BIAS
ADJ
OUT
AUX
8032 TA01a
47.5k
10μF
V
5V
2A
OUT
DESCRIPTION
The LTM
36V, 2A DC/DC μModule
meet the radiated emissions requirements of EN55022.
Conducted emission requirements can be met by adding
standard fi lter components. Included in the package are the
switching controller, power switches, inductor, fi lters and
all support components. Operating over an input voltage
range of 3.6V to 36V, the LTM8032 supports an output
voltage range of 0.8V to 10V, and a switching frequency
range of 200kHz to 2.4MHz, each set by a single resistor.
Only the bulk input and output fi lter capacitors are needed
to fi nish the design. The low profi le package (2.82mm)
enables utilization of unused space on the bottom of PC
boards for high density point of load regulation.
The LTM8032 is packaged in a thermally enhanced, compact
(9mm × 15mm) and low profi le (2.82mm) overmolded land
grid array (LGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8032 is
RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
–10
90
80
70
60
50
40
30
20
10
0
®
0
8032 is an electromagnetic compatible (EMC)
100 200 300 400 500
EMC 36V, 2A DC/DC
µModule Regulator
LTM8032 EMI Performance
FREQUENCY (MHz)
®
Ultralow Noise
buck converter designed to
600 700 800 900 1000
LTM8032
8031 TA01b
EN55022
CLASS B
LIMIT
8032fc
1

Related parts for LTM8032IV#PBF

LTM8032IV#PBF Summary of contents

Page 1

... The LTM8032 is RoHS compliant. L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. V ...

Page 2

... LEAD FREE FINISH TRAY LTM8032EV#PBF LTM8032EV#PBF LTM8032IV#PBF LTM8032IV#PBF LTM8032MPV#PBF LTM8032MPV#PBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: This product is only offered in trays. For more information go to: ...

Page 3

... Note that the maximum internal temperature is determined by specifi c operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. Note 3: See Linear Technology Application Note 100. LTM8032 = 3V, unless otherwise specifi ed. MIN ...

Page 4

LTM8032 TYPICAL PERFORMANCE CHARACTERISTICS 3.3V Effi ciency OUT 100 5. 12V IN 24V IN 10 36V IN 0 0.01 1 0.1 OUTPUT CURRENT (A) 8031 G01 Input Current vs Output Current, ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Minimum Required Input Voltage vs Load Current OUT 7.5 7.0 6.5 6.0 5.5 TO RUN TO START RUN/SS ENABLED 5.0 0 500 1000 1500 LOAD CURRENT (mA) 8032 G10 Output Current vs Input Voltage ...

Page 6

LTM8032 TYPICAL PERFORMANCE CHARACTERISTICS Temperature Rise vs Load Current 10V OUT 24V 5 36V 0 0 500 1000 1500 2000 LOAD CURRENT (mA) 8032 G19 PIN FUNCTIONS V (Bank ...

Page 7

... ADJ (Pin J7): The LTM8032 regulates its ADJ pin to 0.79V. ® operation Connect the adjust resistor from this pin to ground. The value ADJ where R ADJ Burst Mode is a registered trademark of Linear Technology Corporation. is above 3.6V and IN CURRENT MODE CONTROLLER SYNC RT PGOOD LTM8032 ...

Page 8

LTM8032 OPERATION The LTM8032 is a standalone nonisolated step-down switching DC/DC power supply. It can deliver output current with only bulk external input and output capacitors. This module provides a precisely regulated output voltage programmable ...

Page 9

APPLICATIONS INFORMATION Table 1: Recommended Component Values and Confi guration OUT IN 3.6V to 36V 0.82V 2.2μF 3.6V to 36V 1.00V 2.2μF 3.6V to 36V 1.20V 2.2μF 3.6V to 36V 1.50V 2.2μF 3.6V to 36V 1.80V ...

Page 10

... EMC performance are given in the Typical Performance Characteristics section. Further data, operating conditions and test setup are detailed in an EMI Test report available from Linear Technology. Frequency Selection The LTM8032 uses a constant frequency PWM architecture that can be programmed to switch from 200kHz to 2.4MHz by using a resistor tied from the RT pin to ground ...

Page 11

APPLICATIONS INFORMATION than 56V. If BIAS power is applied from a remote or noisy voltage source, it may be necessary to apply a decoupling capacitor locally to the LTM8032. Load Sharing Two or more LTM8032s may be paralleled to produce ...

Page 12

LTM8032 APPLICATIONS INFORMATION RUN 15k RUN/SS GND 0.22μF 2ms/DIV Figure 2. To Soft-Start the LTM8032, Add a Resistor and Capacitor to the RUN/SS Pin Synchronization The internal oscillator of the LTM8032 can be synchro- nized by applying an external 250kHz ...

Page 13

... LTM8032. However, these capacitors can cause problems if the LTM8032 is plugged into a live or fast rising or falling supply (see Linear Technology Application Note 88 for a complete discussion). The low loss ceramic capacitor combined with stray inductance in ...

Page 14

LTM8032 APPLICATIONS INFORMATION CLOSING SWITCH SIMULATES HOT PLUG + LOW IMPEDANCE ENERGIZED 24V SUPPLY + 0.1μF + 22μF 35V AI.EI. Figure 5. A Well Chosen Input Network Prevents Input Voltage Overshoot and Ensures Reliable Operation When the LTM8032 is Hot-Plugged ...

Page 15

TYPICAL APPLICATIONS 3.6VDC TO 24VDC 3.6VDC TO 24VDC 0.82V Step-Down Converter OUT IN 2.2μF FIN LTM8032 AUX RUN/SS BIAS SHARE PGOOD RT SYNC GND ADJ 150k 5.62M 8032 TA02 *RUNNING VOLTAGE RANGE. SEE APPLICATIONS FOR START-UP ...

Page 16

LTM8032 TYPICAL APPLICATIONS 4.3VDC TO 36VDC 5.5VDC TO 36VDC 7VDC TO 36VDC 16 2.5V Step-Down Converter OUT IN 2.2μF FIN LTM8032 AUX RUN/SS 3.3V BIAS SHARE PGOOD RT SYNC GND ADJ 61.9k 115k 8032 TA04 *RUNNING ...

Page 17

TYPICAL APPLICATIONS 10.5VDC TO 36VDC 5.5VDC TO 36VDC OPTIONAL SYNC TIE TO GND IF NOT USED 8V Step-Down Converter OUT IN FIN AUX RUN/SS 2.2μF LTM8032 BIAS SHARE PGOOD RT SYNC GND ADJ 39.2k 27.4k 8032 ...

Page 18

LTM8032 PACKAGE DESCRIPTION aaa Z PAD 1 CORNER 4 15.00 BSC X 9.00 Y BSC PACKAGE TOP VIEW 6.350 5.080 3.810 2.540 1.270 0.000 1.270 2.540 3.810 5.080 6.350 SUGGESTED PCB LAYOUT TOP VIEW 18 LGA Package 71-Lead (15mm × ...

Page 19

... 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. PIN V F1 OUT V F2 OUT V F3 ...

Page 20

... V IN www.linear.com ● ≤ 5V, 15mm × 15mm × 2.8mm Package OUT ≤ 15V, 15mm × 15mm × 2.8mm Package OUT ≤ 10V, 9mm × 11.75mm × 2.8mm Package OUT 8032fc LT 1009 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2009 ...

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