Linear Technology LTM8052A Demo Board, 36Vin, 5A 2-Quadrant CVCC Step-Down µModule regulator w/o OVP DC1939A DC1939A 数据表
产品代码
DC1939A
LTM8052/LTM8052A
1
8052fc
Typical applicaTion
FeaTures
DescripTion
36V
IN
, 5A, 2-Quadrant
CVCC Step-Down
µModule Regulator
The
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.
The LTM8052/LTM8052A is packaged in a thermally-
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.)
±5A, 2.5V (2-Quadrant) µModule Voltage Regulator
applicaTions
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
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
Output Voltage vs Output Current
V
IN
RUN
510k
SS
LTM8052
SYNC
100µF
330µF
*INPUT VOLTAGE PROTECTION MAY BE NECESSARY WHEN THE
LTM8052 IS SINKING CURRENT (SEE APPLICATIONS INFORMATION)
8052 TA01a
10µF
V
IN
*
6V TO 36V
V
OUT
2.5V
±5A
COMP
V
OUT
V
REF
CTL_I
CTL_T
RT
GND
90.9k
9.09k
ADJ
OPTIONAL
INPUT
PROTECTION
+
LOAD CURRENT (A)
–10
2.0
2.5
3.5
5
8052 TA01b
1.5
1.0
–5
0
10
0.5
0
3.0
LTM8052A MAINTAINS CURRENT
REGULATION
LTM8052 TURNS OFF AT
OUTPUT OVERVOLTAGE
OUTPUT VOLTAGE (V)
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.