参数资料
| 型号： | SC2443MLTRT |
| 厂商： | Semtech |
| 文件页数： | 3/22页 |
| 文件大小： | 0K |
| 描述： | IC DUAL SYNC STP-DN CTRLR 24MLPQ |
| 标准包装： | 1 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.75 V ~ 16 V |
| 输出数： | 2 |
| 输出电压： | 可调至 0.5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-MLPQ |
| 供应商设备封装： | 24-MLPQ（4x4） |
| 包装： | 标准包装 |
| 产品目录页面： | 1358 (CN2011-ZH PDF) |
| 其它名称： | SC2443MLDKR |
SC2443
Absolute Maximum Ratings
Recommended Operating Conditions
AVCC, PVCC Voltage ……………………………
V BST1 , V BST2 Voltage ………………………………
-0.3 to 20V
-0.3 to 32V
Input Voltage Range …………………………
4.75V to 16V
……………………………… - 0.3 to 40V
Thermal Information
(for <10ns @ freq. < 500kHz)
Junction to Ambient (1) ……………………………
29°C/W
SS1/EN1, SS2/EN2, SYNC Voltage ………………
-0.3 to 6V
Maximum Junction Temperature ……………………… 150°C
IN1-, IN2-, REF Voltage ………………… -0.3 to AVCC+ 0.3V
REF IN , COMP1, COMP2 Voltage ………… -0.3 to AVCC+ 0.3V
CS1+, CS1-, CS2+, CS2- Voltage ………… -0.3 to AVCC+ 0.3V
Storage Temperature ………………………… -65 to +150°C
PGND to AGND ………………………………………
± 0.3V
Peak IR Reflow Temperature …………………………… 260°C
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not recommended.
NOTES-
(1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
(2) This device is ESD sensitive. Use of standard ESD handing precautions is required
Electrical Characteristics
Unless otherwise specified: AVCC = PVCC = 12V, V BST1 = V BST2 = 12V, SYNC = 0V, -40°C < T A = T J < 85°C, R OSC =51.1k W.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Undervoltage Lockout
AVCC Start Threshold
AVCC Start Hysteresis
AVCC Operating Current
AVCC Quiescent Current in UVLO
AVCC TH
AVCC HYST
I CC
I q
AVCC rising
AVCC = AVCC TH - 0.2V
4.5
170
12
1.7
4.7
16
V
mV
mA
mA
Channel 1 Error Amplifier
Non-inverting Input Voltage
V IN1+
0.49
0.5
0.51
V
Non-inverting Input Voltage
V IN1+
0°C < T A = T J < 70°C
0.4925
0.5
0.5075
V
Non-inverting Input Line Regulation
Input Offset Voltage
AVCC TH < AVCC < 15V
1
0.02
%/V
mV
Inverting Input Bias Current
Amplifier Transconductance
Amplifier Open Loop Gain
Amplifier Unity Gain Bandwidth
COMP1 Switching Threshold
Amplifier Output Sink Current
Amplifier Output Source Current
I IN1-
G M1
A OL1
V CS1+ =V CS1- = 0, V SS1 Rising
V IN1- = 1V, V COMP1 = 2.5V
V IN1- = 0V, V COMP1 = 2.5V
-0.1
260
65
5
2.2
16
12
-0.25
μA
μ W -1
dB
MHz
V
μA
μA
3
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