参数资料
型号: SC1485ITSTRT
厂商: Semtech
文件页数: 19/27页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 28-TSSOP
标准包装: 1
PWM 型: 控制器
输出数: 2
占空比: 90%
电源电压: 1.8 V ~ 25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
包装: 标准包装
产品目录页面: 1358 (CN2011-ZH PDF)
其它名称: SC1485ITSDKR
POWER MANAGEMENT
NOT RECOMMENDED FOR NEW DESIGN
VOUT1
VSSA1
SC1485
U1
SC1485
22
23
EN/PSV1
TON1
BST1
DH1
7
6
VOUT1
24
VOUT1
LX1
5
C7
R4
0402
25
VCCA1
ILIM1
4
C8
C3
VOUT1
0402
26
FB1
VDDP1
3
R6
0R (2)
+
+
7343
7343
R3
27
28
PGD1
VSSA1
DL1
PGND1
2
1
VSSA1
0402
0402
VSSA1
8
9
EN/PSV2
TON2
BST2
DH2
21
20
VOUT2
10
VOUT2
LX2
19
C15
56p
0402
R9
20k0
0402
11
VCCA2
ILIM2
18
+
C16
+
C17
VOUT2
R13
20k0
12
13
14
FB2
PGD2
VSSA2
VDDP2
DL2
PGND2
17
16
15
R12 0R (2)
0402
VSSA2
220u/25m
7343
220u/25m
7343
0402
VSSA2
VOUT2
VSSA2
Figure 11: Differential Routing of Feedback and Ground Reference Traces
In Figure 11, VOUT1 and VSSA1 are routed as a differential pair from the output capacitors back to the feedback
components and device. Similarly, VOUT2 and VSSA2 are routed as a differential pair from the output capacitors
back to the feedback components and device.
? 2005 Semtech Corp.
19
www.semtech.com
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