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参数资料
| 型号： | DC1385A |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTM4614 |
| 软件下载： | LTM4614 |
| 设计资源： | DC1385A Design Files DC1385A Schematic |
| 标准包装： | 1 |
| 系列： | µModule® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 1.2V，1.8V |
| 电流 - 输出： | 4A，4A |
| 输入电压： | 2.375 ~ 5.5V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 1.25MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4614 |
| 相关产品： | LTM4614IV#PBF-ND - IC UMODULE DC/DC DUAL 4A 144LGA LTM4614EV#PBF-ND - IC UMODULE DC/DC DUAL 4A 144LGA |
LTM4614
Dual 4A per Channel
Low V IN DC/DC
μModule Regulator
FEATURES
DESCRIPTION
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Dual 4A Output Power Supply
Input Voltage Range: 2.375V to 5.5V
4A DC Typical, 5A Peak Output Current Each
0.8V Up to 5V Output Each, Parallelable
± 2% Max Total DC Output Error (0°C ≤ T J ≤ 125°C)
Output Voltage Tracking
Up to 95% Efficiency
Programmable Soft-Start
Short-Circuit and Overtemperature Protection
Power Good Indicators
Small and Very Low Profile Package:
15mm × 15mm × 2.82mm
The LTM ? 4614 is a complete 4A dual output switching mode
step-down μModule ? regulator. Included in the package
are the switching controllers, power FETs, inductors and
all support components. The dual 4A DC/DC converters
operate over an input voltage range of 2.375V to 5.5V.
The LTM4614 supports output voltages ranging from
0.8V to 5V. The regulator output voltages are set by a
single resistor for each output. Only bulk input and output
capacitors are needed to complete the design.
The low profile package (2.82mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation.
Telecom and Networking Equipment
FPGA Power
SERDES and Other Low Noise Applications
APPLICATIONS
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L , LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks
and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 5481178, 6580258,
6304066, 6127815, 6498466, 6611131, 6724174.
Additional features include overvoltage protection, foldback
overcurrent protection, thermal shutdown and programmable
soft-start. The power module is offered in a space saving and
thermally enhanced 15mm × 15mm × 2.82mm LGA pack-
age. The LTM4614 is RoHS compliant with Pb-free finish.
Different Combination s of Input and Output Voltages
NUMBER OF INPUTS NUMBER OF OUTPUTS I OUT(MAX)
2 2 4A, 4A
2 (Current Share,
Ex. 3.3V and 5V)
1
1
1
2
1
8A
4A, 4A
8A, see LTM4608A
TYPICAL APPLICATION
Efficiency vs Output Current
Dual Output 4A DC/DC μModule Regulator
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89
V IN = 3.3V
V IN1
3.3V TO 5V
10μF
V IN1
V OUT1
FB1
LTM4614
10k
100μF
V OUT1
1.2V/4A
87
85
83
V OUT
1.2V
V OUT
1.5V
V IN2
3.3V TO 5V
10μF
V IN2
GND1
V OUT2
FB2
GND2
5.76k
100μF
V OUT2
1.5V/4A
4614 F01a
81
79
77
75
0
1
2
3
4
LOAD CURRENT (A)
4614 TA01b
4614fb
1
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