LTM8052/LTM8052A
36V , 5A, 2-Quadrant
IN
CVCC Step-Down
µModule Regulator
FEATURES
DESCRIPTION
The LTM®8052/LTM8052A is a 36V , 5A, 2-quadrant
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IN
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constant-voltage, constant-current (CVCC) step-down
μModule® regulator. Included in the package are the
switchingcontroller,powerswitches,inductorandsupport
components.Operatingoveraninputvoltagerangeof6Vto
36V, theLTM8052/LTM8052Asupportsanoutputvoltage
range of 1.2V to 24V. The LTM8052/LTM8052A is able to
sink or source current to maintain voltage regulation up to
thepositiveandnegativecurrentlimits.Thisoutputcurrent
limit can be set by a control voltage, a single resistor or a
thermistor. LTM8052featuresa125%outputovervoltage
protection, while LTM8052A does not, allowing operation
when the output is above the target regulation point.
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Forced Continuous Operation
Selectable Switching Frequency: 100kHz to 1MHz
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(e4) RoHS Compliant Package with Gold Pad Finish
Programmable Soft-Start
Compact (11.25mm × 15mm × 2.82mm) Surface
Mount LGA and (11.25mm × 15mm × 3.42mm)
BGA Packages
The LTM8052/LTM8052A is packaged in a compact
(11.25mm × 15mm × 2.82mm) overmolded land grid ar-
ray (LGA) and ball grid array (BGA) package suitable for
automated assembly by standard surface mount equip-
ment. The LTM8052/LTM8052A are available with SnPb
(BGA) or RoHS compliant terminal finish.
APPLICATIONS
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Constant-Frequency Voltage Regulation Even at
No Load
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Peltier Driver
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Battery Tester
Battery/Supercap Charging and Cell Balancing
Motor Drive Power Regulator
High Power LED Drive
PART NUMBER
BEST FOR
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LTM8052
Sinking and sourcing output current for voltage
regulation primarily.
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LTM8052A
LTM8026
Sinking and sourcing output current for current
regulation primarily.
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.
Protected by U.S. Patents including 7199560, 7321203 and others pending.
Sourcing more than 3A of output current.
(Less than 3A maximum consider LTM8025.)
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TYPICAL APPLICATION
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3.5
3.0
2.5
LTM8052A MAINTAINS CURRENT
REGULATION
LTM8052 TURNS OFF AT
OUTPUT OVERVOLTAGE
V
2.5V
5A
LTM8052
OUT
V
*
IN
6V TO 36V
V
V
IN
OUT
510k
10µF
RUN
SS
2.0
1.5
1.0
0.5
0
V
REF
100µF
SYNC
CTL_I
OPTIONAL
INPUT
PROTECTION
+
COMP
RT
CTL_T
330µF
GND ADJ
90.9k
9.09k
8052 TA01a
*INPUT VOLTAGE PROTECTION MAY BE NECESSARY WHEN THE
LTM8052 IS SINKING CURRENT (SEE APPLICATIONS INFORMATION)
–10
–5
0
5
10
LOAD CURRENT (A)
8052 TA01b
8052fg
1
For more information www.linear.com/LTM8052