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LTM8052 데이터시트 PDF




Linear Technology에서 제조한 전자 부품 LTM8052은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 LTM8052 자료 제공

부품번호 LTM8052 기능
기능 2-Quadrant CVCC Step-Down uModule Regulator
제조업체 Linear Technology
로고 Linear Technology 로고


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LTM8052 데이터시트, 핀배열, 회로
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 Compact (11.25mm × 15mm × 2.82mm) Surface
Mount LGA and (11.25mm × 15mm × 3.42mm)
BGA Packages
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
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.
LTM8052/LTM8052A
36VIN, 5A, 2-Quadrant
CVCC Step-Down
µModule Regulator
Description
The LTM®8052/LTM8052A 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/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 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.
PART NUMBER
LTM8052
LTM8052A
LTM8026
BEST FOR
Sinking and sourcing output current for voltage
regulation primarily.
Sinking and sourcing output current for current
regulation primarily.
Sourcing more than 3A of output current.
(Less than 3A maximum consider LTM8025.)
Click to view associated TechClip Videos.
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 LTM8052A MAINTAINS CURRENT
3.0
REGULATION
LTM8052 TURNS OFF AT
OUTPUT OVERVOLTAGE
2.5
2.0
1.5
1.0
0.5
0
–10
–5 0 5
LOAD CURRENT (A)
10
8052 TA01b
For more information www.linear.com/LTM8052
8052ff
1




LTM8052 pdf, 반도체, 판매, 대치품
LTM8052/LTM8052A
E lectrical Characteristics The l denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at TA = 25°C. RUN = 3V, unless otherwise noted. (Note 3)
PARAMETER
CONDITIONS
MIN TYP MAX
Minimum Input Voltage
l6
Output DC Voltage
Output DC Current
IOUT = 1A, RADJ Open
IOUT = 1A, RADJ = 499Ω
CTL_T, CTL_I = 1.5V
1.2
24
–6
5
Quiescent Current Into VIN
Line Regulation
Load Regulation
Output RMS Voltage Ripple
Switching Frequency
Voltage at ADJ Pin
VIN = 12V, RUN = 0V
VIN = 12V, No Load
6V < VIN < 36V, IOUT = 1A
VIN = 12V, 0A < IOUT < 5A
VIN = 12V, IOUT = 4.5A
RRTT
=
=
40.2k
453k
0.1 3
17 30
0.1
0.7
10
1000
100
l 1.16 1.19 1.22
Current Out of ADJ Pin
RUN Pin Current
ADJ = 0V, VOUT = 1V
RUN = 1.45V
100
5.5
RUN Threshold Voltage (Falling)
1.49 1.55 1.61
RUN Input Hysteresis
160
CTL_I Control Range
0 1.5
CTL_I Pin Current
1.5
CTL_I Positive Current Limit
CTL_I = 1.5V
CTL_I = 0.75V
5.1 5.6 6.1
2.24 2.8 3.36
CTL_I Negative Current Limit
CTL_I = 1.5V
CTL_I = 0.75V
–8.5 –7.7 –6.9
–5.7 –5.1 –4.5
CTL_T Control Range
0 1.5
CTL_T Pin Current
1.5
CTL_T Positive Current Limit
CTL_T = 1.5V
CTL_T = 0.75V
5.1 5.6 6.1
2.24 2.8 3.36
CTL_T Negative Current Limit
CTL_T = 1.5V
CTL_T = 0.75V
–8.5 –7.7 –6.9
–5.5 –4.9 –4.3
VREF Voltage
SS Pin Current
0.5mA Load
1.93 2 2.04
11
SYNC Input Low Threshold
SYNC Input High Threshold
SYNC Bias Current
fSYNC = 400kHz
fSYNC = 400kHz
SYNC = 0V
0.6
1.2
1
UNITS
V
V
V
A
µA
mA
%
%
mV
kHz
kHz
V
µA
µA
V
mV
V
µA
A
A
A
A
V
µA
A
A
A
A
V
µA
V
V
µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: This µModule regulator includes overtemperature protection that
is intended to protect the device during momentary overload conditions.
Internal temperature will exceed 125°C when overtemperature protection
is active. Continuous operation above the specified maximum internal
operating junction temperature may impair device reliability.
Note 3: The LTM8052E/LTM8052AE is guaranteed to meet performance
specifications from 0°C to 125°C internal operating temperature.
Specifications over the full –40°C to 125°C internal operating temperature
range are assured by design, characterization and correlation with
statistical process controls. The LTM8052I/LTM8052AI is guaranteed
to meet specifications over the full –40°C to 125°C internal operating
temperature range. The LTM8052MP/LTM8052AMP is guaranteed to meet
specifications over the full –55°C to 125°C internal operating temperature
range. Note that the maximum internal temperature is determined by
specific operating conditions in conjunction with board layout, the rated
package thermal resistance and other environmental factors.
8052ff
4 For more information www.linear.com/LTM8052

4페이지










LTM8052 전자부품, 판매, 대치품
LTM8052/LTM8052A
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
Input Current vs Output Current
3.3VOUT
2
1
0
–1
–2
–8 –6 –4 –2 0 2
OUTPUT CURRENT (A)
12VIN
24VIN
36VIN
46
8052 G19
Input Current vs Output Current
12VOUT
4
3
2
1
0
–1
–2
–3
–6
24VIN
36VIN
–4 –2 0
24
OUTPUT CURRENT (A)
6
8052 G22
Input Current vs Input Voltage
(Output Shorted)
700
600
500
400
300
200
100
0
0 10
20 30 40
INPUT VOLTAGE (V)
8052 G25
Input Current vs Output Current
5VOUT
3
2
1
0
–1
–2
–3
–8 –6
–4 –2 0 2
OUTPUT CURRENT (A)
12VIN
24VIN
36VIN
46
8052 G20
Input Current vs Output Current
18VOUT
5
4
3
2
1
0
–1
–2
–3
–4
–6
–4 –2 0
2
OUTPUT CURRENT (A)
24VIN
36VIN
46
8052 G23
Input Current vs Output Current
–3.3VOUT
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–6 –5 –4 –3 –2 –1 0 1 2
OUTPUT CURRENT (A)
24VIN
12VIN
345
8052 G26
For more information www.linear.com/LTM8052
Input Current vs Output Current
8VOUT
5
4
3
2
1
0
–1
–2
–3
–4
–5
–8
–6
–4 –2 0 2
OUTPUT CURRENT (A)
12VIN
24VIN
36VIN
46
8052 G21
Input Current vs Output Current
24VOUT
4
3
2
1
36VIN
0
–1
–2
–3
–4
–5 –4 –3 –2 –1 0 1 2 3
OUTPUT CURRENT (A)
45
8052 G24
Input Current vs Output Current
–5VOUT
2
1
0
–1
–2
–6
24VIN
12VIN
–4 –2 0 2
OUTPUT CURRENT (A)
4
8052 G27
8052ff
7

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