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参数资料
| 型号： | MAX5068CAUE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO 16-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.25MHz |
| 占空比： | 75% |
| 电源电压： | 10.8 V ~ 24 V |
| 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 ~ 125°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
High-Frequency, Current-Mode PWM Controller
with Accurate Programmable Oscillator
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +12V for the MAX5068B/E/F; V IN = +23.6V for the MAX5068A/C/D at startup, then reduces to +12V; C IN = C REG5 = 0.1μF;
C VCC = 1μF; R RT = 100k ? ; NDRV = floating; T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
f SW = 10 /(2 x R RT ),
11
MAX5068A/B
25
1250
kHz
NDRV Switching Frequency
RT Voltage
Oscillator Accuracy
Maximum Duty Cycle
f SW
V RT
D MAX
(Note 6)
40k ? < R RT < 500k ?
T A = +25°C
T A = -40°C to +125°C
DT connected to
REG5
f SW = 10 11 /(4 x R RT ),
MAX5068C/D/E/F
f OSC ≤ 500kHz
f OSC > 500kHz
f OSC ≤ 500kHz
f OSC > 500kHz
MAX5068A/B
MAX5068C/D/E/F
12.5
-2.5
-4
-4.5
-6
2.0
50
75
625
+2.5
+4
+4.5
+6
kHz
V
%
%
DEAD-TIME CONTROL (DT)
Dead Time
Dead-Time Disable Voltage
Dead-Time Regulation Voltage
t DT
V DT_DISABLE
V DT
R DT = 24.9k ?
V REG5
- 0.5V
60
1.23
ns
V
V
INTEGRATING FAULT PROTECTION (FLTINT)
FLTINT Source Current
I FLTINT
V FLTINT = 0
60
μA
FLTINT Shutdown Threshold
FLTINT Restart Threshold
V FLTINT_SD V FLTINT rising
V FLTINT_RS V FLTINT falling
2.8
1.6
V
V
SLOPE COMPENSATION (SCOMP) MAX5068C/D/E/F Only
Slope Compensation
Slope-Compensation Range
Slope-Compensation Voltage
Range
V SLOPE
V SLOPER
V SCOMP
C SLOPE = 100pF, R RT = 110k ?
0
0
15
90
2.7
mV/μs
mV/μs
V
Note 1: The MAX5068 is 100% tested at T A = +25°C. All limits over temperature are guaranteed by design.
Note 2: The MAX5068A/B are intended for use in universal-input power supplies. The internal clamp circuit is used to prevent the
bootstrap capacitor (C1 in Figure 1) from charging to a voltage beyond the absolute maximum rating of the device when
UVLO/EN is low. The maximum current to V IN (hence to clamp) when UVLO is low (device is in shutdown) must be external-
ly limited to 2mA. Clamp currents higher than 2mA may result in clamp voltages higher than 30V, thus exceeding the
absolute maximum rating for V IN . For the MAX5068C/D, do not exceed the 24V maximum operating voltage of the device.
Note 3: Reference voltage (V REF ) is measured with FB connected to COMP (see the Functional Diagram ).
Note 4: The SYNC frequency must be at least 25% higher than the programmed oscillator frequency.
Note 5: The internal oscillator clock cycle.
Note 6: The MAX5068A/B driver switching frequency is one-half of the oscillator frequency. The MAX5068C/D/E/F driver switching
frequency is one-quarter of the oscillator frequency.
4
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5068CAUE+ | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM 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 |
| MAX5068CAUE+T | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM 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 |
| MAX5068CAUE-T | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM 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 |
| MAX5068CWP | 制造商:Maxim Integrated Products 功能描述: |
| MAX5068DAUE | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM 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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