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LTM8052/LTM8052A
FEATURES
36V IN , 5A, 2-Quadrant
CVCC Step-Down
μModule Regulator
DESCRIPTION
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Complete Step-Down Switch Mode Power Supply
CVCC: Constant-Voltage Constant-Current
2-Quadrant: Sources and Sinks Output Current
Adjustable Output Current
Wide Input Voltage Range: 6V to 36V
1.2V to 24V Output Voltage
Forced Continuous Operation
Selectable Switching Frequency: 100kHz to 1MHz
(e4) RoHS Compliant Package with Gold Pad Finish
Programmable Soft-Start
Tiny, Low Profile (11.25mm × 15mm × 2.82mm)
Surface Mount LGA Package
The LTM ? 8052/LTM8052A is a 36V IN , 5A, 2-quadrant
constant-voltage, constant-current (CVCC) step-down
μModule ? regulator. Included in the package are the
switching controller, power switches, inductor and support
components. Operating over an input voltage range of 6V to
36V, the LTM8052/LTM8052A supports an output voltage
range of 1.2V to 24V. The LTM8052/LTM8052A is able to
sink or source current to maintain voltage regulation up to
the positive and negative current limits. This output current
limit can be set by a control voltage, a single resistor or a
thermistor. LTM8052 features a 125% output overvoltage
protection, while LTM8052A does not, allowing operation
when the output is above the target regulation point.
Constant-Frequency Voltage Regulation Even at
Peltier Driver
Battery Tester
Battery/Supercap Charging and Cell Balancing
Motor Drive Power Regulator
High Power LED Drive
APPLICATIONS
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No Load
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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.
TYPICAL APPLICATION
The LTM8052/LTM8052A is packaged in a thermally-
enhanced, compact (11.25mm × 15mm × 2.82mm) RoHS
compliant, overmolded land grid array (LGA) package
suitable for automated assembly by standard surface
mount equipment.
PART NUMBER BEST FOR
LTM8052 Sinking and sourcing output current for voltage
regulation primarily.
LTM8052A Sinking and sourcing output current for current
regulation primarily.
LTM8026 Sourcing more than 3A of output current.
(Less than 3A maximum consider LTM8025.)
Output Voltage vs Output Current
V IN *
V IN V OUT
510k
RUN
±5A, 2.5V (2-Quadrant) μModule Voltage Regulator
LTM8052
6V TO 36V
10μF
V OUT
2.5V
±5A
3.5
3.0
2.5
LTM8052A MAINTAINS CURRENT
REGULATION
LTM8052 TURNS OFF AT
OUTPUT OVERVOLTAGE
SS
V REF
100μF
2.0
OPTIONAL
INPUT
PROTECTION
SYNC
COMP
RT
GND
CTL_I
CTL_T
ADJ
+
330μF
1.5
1.0
90.9k
9.09k
0.5
*INPUT VOLTAGE PROTECTION MAY BE NECESSARY WHEN THE
LTM8052 IS SINKING CURRENT (SEE APPLICATIONS INFORMATION)
8052 TA01a
0
–10
–5
0
LOAD CURRENT (A)
5
10
8052 TA01b
1
For more information www.linear.com/LTM8052
8052fc
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