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參數(shù)資料
| 型號(hào)： | SC2612CMSTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | 600kHz/200kHz Step-Down DC/DC Converter |
| 中文描述： | 600kHz/200kHz降壓型DC / DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 12/12頁(yè) |
| 文件大?。?/td> | 453K |
| 代理商： | SC2612CMSTRT |
9
2003 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC2612A/C
Layout Guidelines (Cont.)
4) The Output Capacitor(s) (Cout) should be located as
close to the load as possible, fast transient load cur-
rents are supplied by Cout only, and connections between
Cout and the load must be short, wide copper areas to
minimize inductance and resistance.
5) The SC2612 is best placed over a quiet ground plane
area, avoid pulse currents in the Cin, Q1, Q2 loop flowing
in this area. PGNDH and PGNDL should be returned to
the ground plane close to the package. The AGND pin
should be connected to the ground side of (one of) the
output capacitor(s). If this is not possible, the AGND pin
may be connected to the ground path between the Out-
put Capacitor(s) and the Cin, Q1, Q2 loop. Under no cir-
cumstances should AGND be returned to a ground in-
side the Cin, Q1, Q2 loop.
6) Vcc for the SC2612 should be supplied from the 5V
supply through a 10
resistor, the Vcc pin should be
decoupled directly to AGND by a 0.1
F ceramic capaci-
tor, trace lengths should be as short as possible.
Vout
Vin
+
Currents in Power Section
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