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参数资料
| 型号： | DS2148TN |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Digital Transmission Interface |
| 英文描述： | DATACOM, PCM TRANSCEIVER, PQFP44 |
| 封装： | TQFP-44 |
| 文件页数： | 9/16页 |
| 文件大小： | 603K |
| 代理商： | DS2148TN |
MAX8625A
High-Efficiency, Seamless Transition,
Step-Up/Down DC-DC Converter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = 3.6V, ON = SKIP = IN, FB = GND, VOUT = 3.3V, LX_ unconnected, CREF = C5 = 0.1F to GND, Figure 4. TA = -40°C to +85°C.
Typical values are at TA = +25°C, unless otherwise noted.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, OUT, SKIP, ON to GND ......................................-0.3V to +6V
REF, FB to GND.............................................-0.3V to (IN + 0.3V)
LX2, LX1 (Note 1) .........................................................±1.5ARMS
Continuous Power Dissipation (TA = +70°C)
Single-Layer Board (derate 18.5mW/°C
above TA = +70°C) ...................................................1482mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Range
VIN
2.5
5.5
V
UVLO Threshold
UVLO
VIN rising, 60mV hysteresis
2.20
2.49
V
Quiescent Supply Current, FPWM
Mode, Switching
IIN
No load, VOUT = 3.2V
15
22
mA
Quiescent Supply Current, Skip
Mode, Switching
IIN
SKIP = GND, no load
37
A
Quiescent Supply Current, No
Switching, Skip Mode
IIN
SKIP = GND, FB = 1.3V
35
45
A
ON = GND, TA = +25°C
0.1
1
Shutdown Supply Current
IIN
TA = +85°C
0.2
A
PWM mode, VIN = 2.5V to 5.5V
3.30
V
IOUT = 0 to 0.5A, VIN = 2.5V to 5.5V,
TA = -40°C to +85°C (Note 3)
-1
+1
%
SKIP mode, valley regulation value
3.28
V
Average skip voltage
3.285
Output Voltage Accuracy
(Fixed Output)
Load step +0.5A
-3
%
Output Voltage Range
(Adjustable Output)
1.25
4.00
V
Maximum Output Current
VIN = 3.6V
0.80
A
Soft-Start
L = 3.3H; COUT = C3 + C4 = 44F
250
mA/ms
Load Regulation
IOUT = 0 to 500mA
0.1
%/A
Line Regulation
VIN = 2.5V to 5.5V
0.03
%/V
OUT Bias Current
IOUT
VOUT = 3.3V
3
A
REF Output Voltage
VREF
VIN = 2.5V to 5.5V
1.244
1.25
1.256
V
REF Load Regulation
IREF = 10A
1
mV
FB Feedback Threshold
VFB
IOUT = 0 to full load, PWM mode; VIN = 2.5V
to 5.5V
1.244
1.25
1.258
V
Note 1: LX1 and LX2 have internal clamp diodes to IN, GND and OUT, GND, respectively. Applications that forward bias these
diodes should take care not to exceed the device's power-dissipation limits.
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相关代理商/技术参数 |
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| DS2148TN+ | 功能描述:网络控制器与处理器 IC 5V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148TNB | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148TNC | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148TN-W | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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