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| 型号： | MAX8742EAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/34页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR PWR SUP 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 4.2 V ~ 30 V |
| 输出数： | 2 |
| 输出电压： | 3.3V，5V，2.5 V ~ 5.5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
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500kHz Multi-Output Power-Supply Controllers
with High Impedance in Shutdown
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +36V
PGND to GND.....................................................................±0.3V
V L to GND ................................................................-0.3V to +6V
BST3, BST5 to GND ..............................................-0.3V to +36V
CSH3, CSH5 to GND................................................-0.3V to +6V
FB3 to GND ..............................................-0.3V to (CSL3 + 0.3V)
FB5 to GND ...............................................-0.3V to (CSL5 +0.3V)
LX3 to BST3..............................................................-6V to +0.3V
LX5 to BST5..............................................................-6V to +0.3V
REF, SYNC, SEQ, STEER, SKIP ,
TIME/ON5, SECFB, RESET to GND ..........-0.3V to (V L + 0.3V)
V DD to GND. ...........................................................-0.3V to +20V
RUN/ON3, SHDN to GND.............................-0.3V to (V+ + 0.3V)
12OUT to GND ..........................................-0.3V to (V DD + 0.3V)
DH3 to LX3 ..............................................-0.3V to (BST3 + 0.3V)
DH5 to LX5 ..............................................-0.3V to (BST5 + 0.3V)
V L , REF Short to GND ................................................Momentary
12OUT Short to GND..................................................Continuous
REF Current...........................................................+5mA to -1mA
V L Current.........................................................................+50mA
12OUT Current . .............................................................+200mA
V DD Shunt Current. ...........................................................+15mA
Continuous Power Dissipation (T A = +70°C)
28-Pin SSOP (derate 9.52mW/°C above +70°C) ........762mW
32-Pin Thin QFN (derate 21.3mW/°C above +70°C) ....1702mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10s) ................................+300°C
DL3, DL5 to PGND........................................-0.3V to (V L + 0.3V)
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.
ELECTRICAL CHARACTERISTICS
(V+ = 15V, both PWMs on, SYNC = V L , V L load = 0, REF load = 0, SKIP = 0, T A = 0°C to +85°C , unless otherwise noted. Typical
values are at T A = +25°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAIN SMPS CONTROLLERS
Input Voltage Range
4.2
30.0
V
3V Output Voltage in Adjustable Mode
3V Output Voltage in Fixed Mode
5V Output Voltage in Adjustable Mode
5V Output Voltage in Fixed Mode
Output Voltage Adjust Range
Adjustable-Mode Threshold Voltage
Load Regulation
Line Regulation
Current-Limit Threshold
Idle-Mode Threshold
Soft-Start Ramp Time
Oscillator Frequency
V+ = 4.2V to 30V, CSH3 - CSL3 = 0,
CSL3 connected to FB3
V+ = 4.2V to 30V, 0 < CSH3 - CSL3
< 80mV, FB3 = 0
V+ = 4.2V to 30V, CSH5 - CSL5 = 0,
CSL5 connected to FB5
V+ = 5.3V to 30V, 0 < CSH5 - CSL5
< 80mV, FB5 = 0
Either SMPS
Dual-mode comparator
Either SMPS, 0 < CSH_ - CSL_ < 80mV
Either SMPS, 5.2V < V+ < 30V
CSH3 - CSL3 or CSH5 - CSL5
SKIP = V L or V DD < 13V or SECFB < 2.44V
SKIP = 0, not tested
From enable to 95% full current limit with
respect to f OSC (Note 1)
SYNC = V L
SYNC = 0
2.42
3.20
2.42
4.85
REF
0.5
80
-50
10
450
283
2.5
3.39
2.5
5.13
-2
0.03
100
-100
25
512
500
333
2.58
3.47
2.58
5.25
5.5
1.1
120
-150
40
550
383
V
V
V
V
V
V
%
%/V
mV
mV
Clks
kHz
2
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| MAX8743EEI | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8743EEI+ | 功能描述:电流型 PWM 控制器 Dual Step-Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8743EEI+T | 功能描述:电流型 PWM 控制器 Dual Step-Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8743EEI-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8743ETX | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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