LTM8052/LTM8052A
36V , 5A, 2-Quadrant
IN
CVCC Step-Down
Module Regulator
FEATURES DESCRIPTION
n
Complete Step-Down Switch Mode Power Supply The LTM 8052/LTM8052A is a 36V , 5A, 2-quadrant
IN
n
CVCC: Constant-Voltage Constant-Current constant-voltage, constant-current (CVCC) step-down
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Module regulator. Included in the package are the
2-Quadrant: Sources and Sinks Output Current
n
switching controller, power switches, inductor and support
Adjustable Output Current
n
components. Operating over an input voltage range of 6V to
Wide Input Voltage Range: 6V to 36V
n
36V, the LTM8052/LTM8052A supports an output voltage
1.2V to 24V Output Voltage
n range of 1.2V to 24V. The LTM8052/LTM8052A is able to
Forced Continuous Operation
n sink or source current to maintain voltage regulation up to
Selectable Switching Frequency: 100kHz to 1MHz
n the positive and negative current limits. This output current
(e4) RoHS Compliant Package with Gold Pad Finish
n limit can be set by a control voltage, a single resistor or a
Programmable Soft-Start
thermistor. LTM8052 features a 125% output overvoltage
n
Compact (11.25mm 15mm 2.82mm) Surface
protection, while LTM8052A does not, allowing operation
Mount LGA and (11.25mm 15mm 3.42mm)
when the output is above the target regulation point.
BGA Packages
The LTM8052/LTM8052A is packaged in a compact
(11.25mm 15mm 2.82mm) overmolded land grid ar-
APPLICATIONS
ray (LGA) and ball grid array (BGA) package suitable for
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Constant-Frequency Voltage Regulation Even at
automated assembly by standard surface mount equip-
No Load
ment. The LTM8052/LTM8052A are available with SnPb
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Peltier Driver
(BGA) or RoHS compliant terminal finish.
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Battery Tester
PART NUMBER BEST FOR
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Battery/Supercap Charging and Cell Balancing
LTM8052 Sinking and sourcing output current for voltage
n
Motor Drive Power Regulator
regulation primarily.
n
High Power LED Drive
LTM8052A Sinking and sourcing output current for current
L, LT, LTC, LTM, Linear Technology, the Linear logo and Module are registered trademarks of regulation primarily.
Linear Technology Corporation. All other trademarks are the property of their respective owners.
LTM8026 Sourcing more than 3A of output current.
Protected by U.S. Patents including 7199560, 7321203 and others pending.
(Less than 3A maximum consider LTM8025.)
Click to view associated TechClip Videos.
TYPICAL APPLICATION
Output Voltage vs Output Current
5A, 2.5V (2-Quadrant) Module Voltage Regulator
3.5
LTM8052A MAINTAINS CURRENT
REGULATION
3.0
LTM8052 TURNS OFF AT
LTM8052 V
OUT
V *
IN
OUTPUT OVERVOLTAGE
2.5V
V V
IN OUT
6V TO 36V
2.5
510k
5A
10F
RUN
2.0
SS V
REF 100F
SYNC CTL_I
OPTIONAL
+ 1.5
INPUT
COMP CTL_T
330F
PROTECTION
RT GND ADJ 1.0
90.9k 9.09k
0.5
0
8052 TA01a
*INPUT VOLTAGE PROTECTION MAY BE NECESSARY WHEN THE 10 5 0 5 10
LTM8052 IS SINKING CURRENT (SEE APPLICATIONS INFORMATION)
LOAD CURRENT (A) 8052 TA01b
8052fg
1
For more information www.linear.com/LTM8052
OUTPUT VOLTAGE (V)LTM8052/LTM8052A
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V ............................................................................40V
IN Current Into RUN Pin ............................................100A
ADJ, RT, COMP, CTL_I, CTL_T, V ...........................3V
REF Internal Operating Temperature Range .. 40C to 125C
V ..........................................................................25V
OUT Peak Solder Reflow Body Temperature ................. 245C
RUN, SYNC, SS ...........................................................6V
Storage Temperature.............................. 55C to 125C
PIN CONFIGURATION
TOP VIEW TOP VIEW
8 8
7 SYNC 7 SYNC
BANK 2 GND BANK 2 GND
RUN RUN
6 6
5 5
4 4
BANK 1 BANK 1
3 3
V BANK 3 V BANK 3
OUT OUT
2 2
V V
IN IN
1 1
A B C D E F G H J K L A B C D E F G H J K L
LGA PACKAGE BGA PACKAGE
81-LEAD (15mm 11.25mm 2.82mm) 81-LEAD (15mm 11.25mm 3.42mm)
= 125C, = 18.6C/W, = 5.4C/W, = 5.6C/W, = 10.8C/W = 125C, = 18.6C/W, = 5.4C/W, = 5.6C/W, = 10.8C/W
T T
JMAX JA JC(bottom) JB JC(top) JMAX JA JC(bottom) JB JC(top)
PCB WEIGHT = 1.4 GRAMS, VALUES DERIVED FROM A 4-LAYER 7.62cm 7.62cm PCB WEIGHT = 1.4 GRAMS, VALUES DERIVED FROM A 4-LAYER 7.62cm 7.62cm
8052fg
2
For more information www.linear.com/LTM8052
CTL_T
CTL_I
V
REF
RT
COMP
SS
ADJ
CTL_T
CTL_I
V
REF
RT
COMP
SS
ADJ