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参数资料
| 型号： | LTC3823EUH |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | 5 X 5 MM, PLASTIC, MO-220WHHD, QFN-32 |
| 文件页数： | 14/24页 |
| 文件大小： | 345K |
| 代理商： | LTC3823EUH |
LTC3823
3823fb
Place CIN, COUT, MOSFETs, D1 and inductor all in one
compact area. It may help to have some components
on the bottom side of the board.
Use an immediate via to connect the components to
ground plane including SGND and PGND of LTC3823.
Use several bigger vias for power components.
Use compact plane for switch node (SW) to improve
cooling of the MOSFETs and to keep EMI down.
Use planes for VIN and VOUT to maintain good voltage
filtering and to keep power losses low.
Floodallunusedareasonalllayerswithcopper.Flooding
with copper will reduce the temperature rise of power
component. You can connect the copper areas to any
DC net (VIN, VOUT, GND or to any other DC rail in your
system).
When laying out a printed circuit board, without a ground
plane, use the following checklist to ensure proper opera-
tion of the controller.
3823 F12
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FCB
RUN
VON
PGOOD
VRNG
VFB
ITH
SGND
ION
VDIFFOUT
VOUTSENSE+
VOUTSENSE–
TRACK/SS
PLLFLTR
GND
PGOOD
VRNG
INTVCC
VITH
ION
DIFFOUT
FB
TRACK/SS
RUN
Z0
BOOST
TG
SW
SENSE+
SENSE–
PGND
BG
INTVCC
Z2
Z1/SSENABLE
ZVCC
VIN
PLLIN
LTC3823EG
R6
7.5k
R5
42.5k
RON
100k
R2
16.2k
R1
5.11k
RC
1.5k
RPG
100k
CC2
100pF
CC1
6800pF
C4
220pF
CSS
0.1
F
1000pF
10k
CVCC
4.7
F
DB
CMDSH-3
D1
B320A
+
COUT3
47
F
X5R
×3
COUT1
220
F
4V
VOUT
2.5V
10A
VIN
5V TO 28V
+
CIN
10
F
50V
×3
CB
0.22
F
R7
23.2k
R8
27.1k
M1
Si7342DP
L1
1.2
H
M2
Si7892ADP
PLLIN
+
0.01
F
Figure 12. Design Example: 2.5V/7A at 320kHz
Segregate the signal and power grounds. All small-
signal components should return to the SGND pin at
one point which is then tied to the PGND pin close to
the source of M2.
Place M2 as close to the controller as possible, keeping
the PGND, BG and SW traces short.
Connect the input capacitor(s) CIN close to the power
MOSFETs. This capacitor carries the MOSFET AC
current.
Keep the high dV/dt SW, BOOST and TG nodes away
from sensitive small-signal nodes.
Connect the INTVCC decoupling capacitor CVCC closely
to the INTVCC and PGND pins.
Connect the top driver boost capacitor CB closely to
the BOOST and SW pins.
Connect the VIN pin decoupling capacitor CIN closely
to the VIN and PGND pins.
applications information
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3823EGN | 4 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| LTC3823EUH#TR | 4 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PQCC32 |
| LTC3823EGN#TR | 4 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| LTC3827IUH | 3 A DUAL SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PQCC32 |
| LTC3827IUH#TR | 3 A DUAL SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PQCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3823EUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC3823EUH#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3823IGN#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC3823IGN#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN DC/DC CTRL SSOP-28 |
| LTC3823IGN#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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