参数资料
| 型号： | SC410MLTRT |
| 厂商： | Semtech |
| 文件页数： | 10/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 10MLPD |
| 标准包装： | 1 |
| 系列： | EcoSpeed® |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.75 V ~ 7.5 V |
| 输入电压： | 5.5 V ~ 24 V |
| 频率 - 开关： | 200kHz ~ 1MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-MLPD（3x3） |
| 其它名称： | SC410MLDKR |
SC410
Typical Characteristics (continued)
Characteristics are based on a circuit with V IN = 12V, R TON = 90.9k?.
Efficiency — Power Loss (3.3 V OUT )
Efficiency — Power Loss (5 V OUT )
100
90
80
70
60
V OUT = 3.3V, L= 3.3μH (28m?), C C = 270pF, C OUT = 66μF
Efficiency
P LOSS
5
4
3
2
1
100
90
80
70
60
V OUT = 5V, L= 4.7μH (16.2m?), C C = 220pF, C OUT = 44μF
Efficiency
P LOSS
5
4
3
2
1
50
0.001
0.01
0.1
I OUT (A DC )
1
10
0
50
0.001
0.01
0.1
I OUT (A DC )
1
10
0
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
Pin Name
BST
VIN
LX
PGND
PGOOD
FB
EN
TON
AGND
LDO
PAD
Pin Function
Bootstrap pin — A capacitor is connected between BST and LX to develop the floating voltage for the
high-side gate drive.
Power input supply voltage
Switching (phase) node
Power ground
Open-drain power good indicator — High impedance indicates power is good. An external pull-up
resistor is required.
Feedback input for switching regulator — Connect to an external resistor divider from the output to pro-
gram the output voltage.
Enable input for switching regulator —Pull EN high to enable the part with ultrasonic power save mode en-
abled. Connect to AGND to disable the switching regulator. A voltage divider can be added between VIN and
AGND pins for input UVLO functionality.
On-time set input — Set the on-time by connecting a series resistor to AGND.
Analog Ground.
Output for the internal LDO and internal connection to the bias node — Decoupling capacitors are required
to AGND and PGND regardless of the use of the LDO for external loads.
Thermal pad for heatsinking purposes. (Not connected internally) Connect to AGND plane using multiple
vias.
10
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