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参数资料
| 型号： | MAX5975AETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO CM 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 600kHz |
| 占空比： | 84% |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
Current-Mode PWM Controllers with Frequency
Dithering for EMI-Sensitive Power Supplies
ABSOLUTE MAXIMUM RATINGS
IN to GND ..............................................................-0.3V to +26V
EN, NDRV to GND ......................................-0.3V to (V IN + 0.3V)
RT, FFB, COMP, SS, DCLMP, DITHER/SYNC
to GND .................................................................-0.3V to +6V
FB to GND ...............................................................-0.3V to +6V
CS, CSSC to GND ...................................................-0.8V to +6V
PGND to GND ......................................................-0.3V to +0.3V
Maximum Input/Output Current (continuous)
NDRV ............................................................................100mA
NDRV (pulsed for less than 100ns) .................................. Q 1A
Continuous Power Dissipation (T A = +70 N C) (Note 1)
16-Pin TQFN (derate 20.8mW/ N C above +70 N C) .......1666mW
Junction-to-Case Thermal Resistance ( B JC ) (Note 1)
16-Pin TQFN................................................................ +7 N C/W
Junction-to-Ambient Thermal Resistance ( B JA ) (Note 1)
16-Pin TQFN.............................................................. +48 N C/W
Operating Temperature Range .......................... -40 N C to +85 N C
Maximum Junction Temperature.....................................+150 N C
Storage Temperature Range............................ -65 N C to +150 N C
Lead Temperature (soldering, 10s) ................................+300 N C
Soldering Temperature (reflow) ......................................+260 N C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial .
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 IN = 12V (for MAX5975A, bring V IN up to 21V for startup), V CS = V CSSC = V DITHER/SYNC = V FB = V FFB = V DCLMP = V GND , V EN =
+2V, NDRV = SS = COMP = unconnected, R RT = 34.8k I , C IN = 1 F F, T A = -40 N C to +85 N C, unless otherwise noted. Typical values
are at T A = +25 N C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
UNDERVOLTAGE LOCKOUT/STARTUP (IN)
Bootstrap UVLO Wakeup Level
Bootstrap UVLO Shutdown
Level
V INUVR
V INUVF
V IN rising
V IN falling
MAX5975A
MAX5975B
19.1
9.4
6.65
19.8
9.8
7
20.4
10.25
7.35
V
V
IN Supply Current in
Undervoltage Lockout
IN Supply Current After Startup
I START
I C
V IN = +18V (for MAX5975A);
V IN = +9V (for MAX597BA),
when in bootstrap UVLO
V IN = +12V
100
1.8
150
3
F A
mA
ENABLE (EN)
Enable Threshold
V ENR
V ENF
V EN rising
V EN falling
1.17
1.09
1.215
1.14
1.26
1.19
V
Input Current
I EN
1
F A
OSCILLATOR (RT)
RT Bias Voltage
V RT
1.23
V
NDRV Switching Frequency
Range
NDRV Switching Frequency
Accuracy
f SW
100
-8
600
+8
kHz
%
Maximum Duty Cycle
D MAX
f SW = 250kHz
81
82.5
84
%
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5975AETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5975AETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5975BETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5975BETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5975CETE+ | 制造商:Maxim Integrated Products 功能描述:CURRENT-MODE PWM CONTROLLERS WITH FREQUENCY DITHERING FOR EM - Rail/Tube |
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