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LTM8052 fiches techniques PDF

Linear Technology - 2-Quadrant CVCC Step-Down uModule Regulator

Numéro de référence LTM8052
Description 2-Quadrant CVCC Step-Down uModule Regulator
Fabricant Linear Technology 
Logo Linear Technology 





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LTM8052 fiche technique
Features
n Complete Step-Down Switch Mode Power Supply
n CVCC: Constant-Voltage Constant-Current
n 2-Quadrant: Sources and Sinks Output Current
n Adjustable Output Current
n Wide Input Voltage Range: 6V to 36V
n 1.2V to 24V Output Voltage
n Forced Continuous Operation
n Selectable Switching Frequency: 100kHz to 1MHz
n (e4) RoHS Compliant Package with Gold Pad Finish
n Programmable Soft-Start
n Tiny, Low Profile (11.25mm × 15mm × 2.82mm)
Surface Mount LGA Package
Applications
n Constant-Frequency Voltage Regulation Even at
No Load
n Peltier Driver
n Battery Tester
n Battery/Supercap Charging and Cell Balancing
n Motor Drive Power Regulator
n High Power LED Drive
LTM8052
36VIN, 5A, 2-Quadrant
CVCC Step-Down
µModule Regulator
Description
The LTM®8052 is a 36VIN, 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
supports an output voltage range of 1.2V to 24V. The
LTM8052 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.
The LTM8052 is packaged in a thermally-enhanced, com-
pact (11.25mm × 15mm × 2.82mm) RoHS compliant,
overmolded land grid array (LGA) package suitable for au-
tomated assembly by standard surface mount equipment.
PART NUMBER
LTM8052
LTM8026
BEST FOR
Sinking and Sourcing Output Current
Sourcing more than 3A of output current.
(Less than 3A maximum consider LTM8025.)
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
±5A, 2.5V (2-Quadrant) µModule Voltage Regulator
VIN*
6V TO 36V
10µF
OPTIONAL
INPUT
PROTECTION
510k
LTM8052
VIN VOUT
RUN
SS
SYNC
VREF
CTL_I
COMP CTL_T
RT GND ADJ
90.9k
9.09k
VOUT
2.5V
±5A
100µF
+
330µF
*INPUT VOLTAGE PROTECTION MAY BE NECESSARY WHEN THE
8052 TA01a
LTM8052 IS SINKING CURRENT (SEE APPLICATIONS INFORMATION)
Output Voltage vs Output Current
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–10
–5 0 5
LOAD CURRENT (A)
10
8052 TA01b
8052fa
1

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