参数资料
型号: DC1367A
厂商: Linear Technology
文件页数: 19/24页
文件大小: 0K
描述: BOARD EVAL LTM4615
软件下载: LTM4615
设计资源: DC1367A Design Files
DC1367A Schematic
标准包装: 1
系列: LTM®, uModule®
主要目的: DC/DC,LDO 步降
输出及类型: 3,非隔离
输出电压: 1.8V,1.2V,1V
电流 - 输出: 4A,2.5A,1.5A
输入电压: 2.5 ~ 5.5 V
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:
已用 IC / 零件: LTM4615
相关产品: LTM4615EV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA
LTM4615IV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA
LTM4615
APPLICATIONS INFORMATION
V IN 3V TO 5.5V
PGOOD1 10μF
C IN1
6.3V
C IN2
10μF
6.3V
PGOOD2
C12
R FB1
10μF
10k
R5
3.32k
V OUT1
1.2V
4A
100μF
6.3V
22μF
6.3V
C OUT1
22μF
6.3V
R3
10k V IN1
PGOOD1
V OUT1
FB1
COMP1
V IN TRACK1
L1 0.2μH* RUN/SS1
1.2V LDO_IN
EN3
BOOST3
GND1
*FAIR-RITE 0805 2508056007Y6
IF MORE FILTERING REQUIRED
LTM4615
GND2
V IN2
PGOOD2
V OUT2
FB2
COMP2
TRACK2
RUN/SS2
LDO_OUT
FB3
PGOOD3
GND3
R4
10k
V IN
V OUT3
1V LOW NOISE AT 1A
PGOOD3
R6
10k
V OUT3
C11
10μF
6.3V
R FB2
5.76k
22μF
6.3V
22μF
6.3V
4615 F12
V OUT2
1.5V
4A
C OUT2
100μF
6.3V
Figure 12. Typical 3V to 5.5V IN , 1.5V and 1.2V at 4A and 1V at 1A Design
Table 4. Output Voltag e Response vs Component Matrix (Refer to Figure 12) 0A to 2.5A Load Step Typical Measured Values
C OUT1 AND C OUT2
CERAMIC VENDORS
TDK
Murata
TDK
Murata
VALUE
22μF 6.3V
22μF 16V
100μF 6.3V
100μF 6.3V
PART NUMBER
C3216X7SOJ226M
GRM31CR61C226KE15L
C4532X5R0J107MZ
GRM32ER60J107M
C OUT1 AND C OUT2
BULK VENDORS
Sanyo POSCAP
Sanyo POSCAP
C IN BULK VENDORS
Sanyo POSCAP
VALUE
150μF 10V
220μF 4V
VALUE
100μF 10V
PART NUMBER
10TPD150M
4TPE220MF
PART NUMBER
10CE100FH
V OUT
(V)
C IN C IN
(CERAMIC) (BULK)*
C OUT1 AND C OUT2 C OUT1 AND C OUT2
(CER) EACH (POSCAP) EACH
I TH
V IN
(V)
DROOP PEAK-TO-PEAK RECOVERY LOAD STEP
(mV) DEVIATION TIME (μs) (A/μs)
R FB
(kΩ)
1.2
1.2
1.2
1.2
1.5
1.5
1.5
1.5
1.8
1.8
1.8
2.5
2.5
2.5
3.3
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
10μF × 2
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
None
100μF
100μF
100μF
100μF, 22μF × 2
22μF × 1
100μF, 22μF × 2
22μF × 1
100μF, 22μF × 2
22μF × 1
100μF, 22μF × 2
22μF × 1
100μF, 22μF × 2
22μF × 1
22μF × 1
22μF × 1
22μF × 1
22μF × 1
22μF × 1
None
220μF
None
220μF
None
220μF
None
220μF
None
220μF
220μF
None
150μF
150μF
150μF
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
5
5
3.3
3.3
5
5
3.3
3.3
5
5
3.3
5
5
3.3
5
33 68
25 50
33 68
25 50
30 60
28 60
30 60
27 56
34 68
30 60
30 60
50 90
33 60
50 95
50 90
11 2.5
9 2.5
8 2.5
10 2.5
11 2.5
11 2.5
10 2.5
10 2.5
12 2.5
12 2.5
12 2.5
10 2.5
10 2.5
12 2.5
12 2.5
10
10
10
10
5.76
5.76
5.76
5.76
3.92
3.92
3.92
2.37
2.37
2.37
1.62
*Bulk capacitance is optional if V IN has very low input impedance.
19
For more information www.linear.com/LTM4615
4615fb
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