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LTM4661 데이터시트(PDF) 4 Page - Linear Technology

부품명 LTM4661
상세설명  15V, 4A Step-Up 關Module Regulator
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTM4661 데이터시트(HTML) 4 Page - Linear Technology

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LTM4661
4
4661f
For more information www.linear.com/LTM4661
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Output Current,
VIN = 3.3V
Efficiency vs Output Current,
VIN = 5V
Burst vs Continuous Mode
Efficiency, VIN = 3.3V
5V Output Load Transient
Response
12V Output Load Transient
Response
ELECTRICAL CHARACTERISTICS
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: The LTM4661 is tested under pulsed load conditions such that
TJ ≈ TA. The LTM4661E is guaranteed to meet performance specifications
over the 0°C to 125°C internal operating temperature range. 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 LTM4661I is guaranteed to meet specifications over the
full –40°C to 125°C internal operating temperature range. Note that the
maximum ambient temperature consistent with these specifications is
determined by specific operating conditions in conjunction with board
layout, the rated package thermal resistance and other environmental
factors.
Note 3: The minimum on-time condition is specified for a peak-to-peak
inductor ripple current of ~40% of IMAX Load. (See the Applications
Information section)
Note 4: See output current derating curves for different VIN, VOUT and TA.
Note 5: Limit current into the RUN pin to less than 2mA.
Note 6: Guaranteed by design.
Note 7: 100% tested at wafer level.
Note 8: The LTM4661 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 170°C when overtemperature shutdown is active.
Continuous operation above the specified maximum operation junction
temperature may result in device degradation or failure.
LOAD CURRENT (A)
0
93
75
91
87
83
79
89
85
81
77
73
1
1.8
0.6
1.4
4661 G01
2
0.8
1.6
0.4
1.2
0.2
VOUT = 5V, 2A DC
VOUT = 8V, 1A DC
VOUT = 12V, 0.65A DC
VOUT = 15V, 0.5A DC
LOAD CURRENT (A)
0
93
75
91
87
83
79
89
85
81
77
73
1
1.8
0.6
1.4
4661 G02
2
0.8
1.6
0.4
1.2
0.2
VOUT = 8V, 1.7A DC
VOUT = 12V, 1A DC
VOUT = 15V, 0.8A DC
500µs/DIV
VOUT (AC)
200mV/DIV
LOAD STEP
500mA
TO 1A
4661 G04
VIN = 3.3V, VOUT = 5V
fS = 1MHz (DEFAULT)
500mA TO 1A LOAD STEP
COUT = 2×22µF CERAMIC
500µs/DIV
VOUT (AC)
200mV/DIV
LOAD STEP
200mA
TO 400mA
4661 G05
VIN = 3.3V, VOUT = 12V
fS = 1MHz (DEFAULT)
200mA TO 400mA LOAD STEP
COUT = 2×22µF CERAMIC
LOAD CURRENT (A)
0
100
75
95
85
90
80
70
0.1
4661 G03
1
CONTINUOUS MODE
BURST MODE OPERATION


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