参数资料
型号: DC1367A
厂商: Linear Technology
文件页数: 9/24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
SIMPLIFIED BLOCK DIAGRAM
Switching Regulator Block Diagram
PGOOD
RUN/SS
R SS
1M
4.7μF
6.3V
V IN
V IN
22μF 2.375V TO 5.5V
6.3V
TRACK
SUPPLY
4.99k
5.76k
C SSEXT
C SS
1000pF
TRACK
COMP
INTERNAL
COMP
CONTROL, DRIVE
POWER FETS
M1
M2
0.47μH
470pF
R FBHI
4.99k
V OUT
4.7μF
6.3V
GND
22μF
6.3V
× 3
V OUT
1.5V
4A
FB
R FB
5.76k
VLDO Block Diagram
5V BOOST
SW
BOOST3
4615 F01a
FB3
V IN
1.14V TO 3.5V
10μF
LDO_IN
4.7μF
6.3V
GND3
EN3
ENABLE
0.4V
+
CONTROL
GND3
LDO_RHI
4.99k
4.7μF
GND3
LDO_OUT
4.7μF
6.3V
GND3
V OUT
1V
10μF 1.5A
GND3
GND
POWER GOOD
PGOOD3
4615 F01b
1V
10k
R FBLDO
3.32k
Figure 1. Simplified LTM4615 Block Diagram of Each Switching Regulator Channel and the VLDO
DECOUPLING REQUIREMENTS
T A = 25°C. Use Figure 1 configuration for each channel.
SYMBOL
C IN
C OUT
LDO_IN
LDO_OUT
PARAMETER
External Input Capacitor Requirement
(V IN = 2.375V to 5.5V, V OUT = 1.5V)
External Output Capacitor Requirement
(V IN = 2.375V to 5.5V, V OUT = 1.5V)
LDO Input Capacitance
LDO Output Capacitance
CONDITIONS
I OUT = 4A
I OUT = 4A
I OUT = 1A
I OUT = 1A
MIN
22
66
4.7
10
TYP
100
10
MAX
UNITS
μF
μF
μF
μF
9
For more information www.linear.com/LTM4615
4615fb
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