POWER LOSS (W)
LTM8023
2A, 36V DC/DC
Step-Down Module
Regulator
FEATURES DESCRIPTION
n
Complete Step-Down Switch Mode Power Supply
The LTM 8023 is a complete 2A, DC/DC step-down power
n
Wide Input Voltage Range: 3.6V to 36V
supply. Included in the package are the switching controller,
n
2A Output Current
power switches, inductor, and all support components.
n
0.8V to 10V Output Voltage
Operating over an input voltage range of 3.6V to 36V, the
n
Selectable Switching Frequency: 200kHz to 2.4MHz
LTM8023 supports an output voltage range of 0.8V to 10V,
n
Current Mode Control
and a switching frequency range of 200kHz to 2.4MHz,
n
Programmable Soft-Start
each set by a single resistor. Only the bulk input and output
n
SnPb (BGA) or RoHS Compliant (LGA and BGA)
filter capacitors are needed to finish the design.
Finish
The low profile package enables utilization of unused
n
Tiny, Low Profile, Surface Mount LGA (9mm
space on the bottom of PC boards for high density point
11.25mm 2.82mm) and BGA (9mm 11.25mm
of load regulation.
3.42mm) Packages
The LTM8023 is packaged in a thermally enhanced, com-
pact and low profile over-molded land grid array (LGA)
APPLICATIONS
and ball grid array (BGA) packages suitable for automated
n assembly by standard surface mount equipment. The
Automotive Battery Regulation
n LTM8023 is available with SnPb (BGA) or RoHS compli-
Power for Portable Products
n ant terminal finish.
Distributed Supply Regulation
n
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and Module are registered
Industrial Supplies
trademarks of Linear Technology Corporation. All other trademarks are the property of their
n
Wall Transformer Regulation
respective owners.
TYPICAL APPLICATION
5.5V to 36V , 3.3V/2A DC/DC Module Converter Efficiency and Power Loss
IN IN
90 1.8
V
OUT
V *
1.6
IN
85
V V 3.3V
IN OUT
5.5V TO 36V
2A
1.4
AUX
2.2F
22F 80
RUN/SS
BIAS
1.2
75
SHARE
1.0
70
LTM8023
0.8
PGOOD
65
0.6
60
0.4
ADJ
SELECTABLE V = 12V
IN
55
0.2
OPERATING R GND SYNC V = 3.3V
T OUT
FREQUENCY 8023 TA01 f = 650 kHz
50 0
49.9k 154k 0.01 0.1 1 10
LOAD CURRENT (A)
8023 TA01b
*RUNNING VOLTAGE RANGE. PLEASE
REFER TO APPLICATIONS INFORMATION
FOR START-UP DETAILS
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For more information www.linear.com/LTM8023
EFFICIENCY (%)LTM8023
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V , RUN/SS Voltage .................................................40V V + BIAS .................................................................56V
IN IN
ADJ, R , SHARE Voltage .............................................5V Internal Operating Temperature
T
V , AUX .................................................................10V (Note 2) .................................................. 40C to 125C
OUT
PGOOD, SYNC...........................................................30V Storage Temperature.............................. 55C to 125C
BIAS ..........................................................................16V Solder Temperature ............................................... 250C
PIN CONFIGURATION
GND (BANK 3) SHARE R ADJ GND (BANK 3) SHARE R ADJ
T T
7 7
SYNC SYNC
6 PGOOD 6 PGOOD
5 RUN/SS 5 RUN/SS
BIAS BIAS
4 4
AUX AUX
3 3
V V
OUT OUT
(BANK 2) (BANK 2)
2 V 2 V
IN IN
(BANK 1) (BANK 1)
1 1
A B C D E F G H A B C D E F G H
LGA PACKAGE BGA PACKAGE
50-LEAD (11.25mm 9mm 2.82mm) 50-LEAD (11.25mm 9mm 3.42mm)
T = 125C, = 30.4C/W, = 12.2C/W, T = 125C, = 32.1C/W, = 14.8C/W,
JMAX JA JCbottom JMAX JA JCbottom
= 23.9C/W, = 12.1C/W, WEIGHT = 0.9g = 23.7C/W, = 14.6C/W, WEIGHT = 0.9g
JCtop JB JCtop JB
VALUES DETERMINED PER JEDEC 51-9, 51-12 VALUES DETERMINED PER JEDEC 51-9, 51-12
ORDER INFORMATION
PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE MSL TEMPERATURE RANGE
TYPE RATING (Note 2)
DEVICE FINISH CODE
LTM8023EV#PBF Au (RoHS) LTM8023V e4 LGA 3 40C to 85C
LTM8023IV#PBF Au (RoHS) LTM8023V e4 LGA 3 40C to 85C
LTM8023MPV#PBF Au (RoHS) LTM8023MPV e4 LGA 3 55C to 125C
LTM8023EY#PBF SAC305 (RoHS) LTM8023Y e1 BGA 3 40C to 85C
LTM8023IY#PBF SAC305 (RoHS) LTM8023Y e1 BGA 3 40C to 85C
LTM8023IY SnPb (63/37) LTM8023Y e0 BGA 3 40C to 85C
LTM8023MPY#PBF SAC305 (RoHS) LTM8023Y e1 BGA 3 55C to 125C
LTM8023MPY SnPb (63/37) LTM8023Y e0 BGA 3 55C to 125C
Consult Marketing for parts specified with wider operating temperature
Recommended LGA and BGA PCB Assembly and Manufacturing
ranges. *Device temperature grade is indicated by a label on the shipping
Procedures:
container. Pad or ball finish code is per IPC/JEDEC J-STD-609. www.linear.com/umodule/pcbassembly
Terminal Finish Part Marking: LGA and BGA Package and T ray Drawings:
www.linear.com/leadfree www.linear.com/packaging
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For more information www.linear.com/LTM8023