参数资料
| 型号： | SC4212MLTRT |
| 厂商： | Semtech |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1A 8MLPD |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.5 V ~ 5 V |
| 输入电压： | 1.5 V ~ 6 V |
| 电压 - 压降（标准）： | 0.2V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A（最小值） |
| 电流 - 限制（最小）： | 1.1A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VDFN 裸露焊盘 |
| 供应商设备封装： | 8-MLPD（3x3） |
| 包装： | 标准包装 |
| 其它名称： | SC4212MLDKR |
SC4212
SC4212
Pin Descriptions
Pin # Pin
Pin Descriptions Name
Pin Function
Pin #
Pin Name
Pin Function
Enable Input. Pulling this pin below 0.5V turns the regulator off, reducing the quiescent current to a frac-
feature of its operating value. The device will be enabled if this pin is left open. Connect to VIN if the enable
is not being used.
This pin is the power output of this device. A minimum 10μF capacitor should be placed directly at this
resistors are used , the output voltage will be determined (R by 1 + the 2 resistor ratio (See Application Circuits on
V OUT = Volts
0.5 ? R (R 1 + R 2 )
V OUT = ? Volts
R 2 : The resistor connected from FB to GND.
1,4,5
1,4,5
2
2
3
3
6
6
7
7
8
8
NC
NC
EN
EN
VIN
VIN
VOUT
VOUT
FB
FB
GND
GND
No connect.
No connect.
tionof Input.Pullingthispinbelow willbeturnsthe ifthispinisleftopen.theConnecttoVINifthe to
Enable its operating value. The device 0.5V enabled regulator off, reducing quiescent current enable frac-
tion
Input isnotpin.Forused.
Input VIN pin. . A bulk full load, the input this pin close to this pin ( VOUT that ) and 6V.
supply does not sag . A 1.5V. Also minimum of 4.7μF placed close this pin to placed that the at
feature voltage being regulation at full load, the input to this pin must between ( VOUT + 0.5V ) and 5.5V.
Minimum voltage = 1.5V For regulation capacitance should be to placed must between to ensure + 0.5V the input
Minimum VIN = 1.5V below large bulk capacitance should be ceramic capacitor should be ensure directly input
thispin.
supply does not sag below 1.5V. Also a minimum of 4.7μF ceramic capacitor should be placed directly at
this pin.
pin.
This pin is the power output of this device. A minimum 10μF capacitor should be placed directly at this
pin.
When arepinis, theoutput the willbe,theoutputbythe willbesetto(See .IfexternalCircuitson
When this pin is connected to the VOUT pin , the output voltage will be set to 0.5V . If external feedback
resistors this used connected to voltage VOUT pin determined voltage resistor ratio 0.5V Application feedback
page1): 0.5 ? R )
page1): 2
R 2
R 1 : The resistor connected from VOUT to FB.
R 1 : The resistor connected from VOUT to FB.
R 2 : The resistor connected from FB to GND.
Reference ground. The GND pin and the thermal pad must be connected together at the IC.
Reference ground. The GND pin and the thermal pad must be connected together at the IC.
Thermal Pad
Thermal Pad vias.
5
T
T
Thermal pad for heatsinking purposes. Not connected internally. Connect to ground plane using multiple
Thermal pad for heatsinking purposes. Not connected internally. Connect to ground plane using multiple
4
vias. 3 2
1
Block Diagram
Block Diagram
VIN
RSENSE
VPUMP
VOUT
FB
VIN
0.5V
1.5uA
EN
VOUT VIN
? 2010 Semtech Corporation
Thermal
Shutdown
Reverse Voltage
Shutdown
VIN
Reference
GND
www.semtech.com 6 6
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