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参数资料
| 型号： | MAX5975AETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/20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
ELECTRICAL CHARACTERISTICS (continued)
(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
CURRENT-LIMIT COMPARATORS (CS)
Cycle-by-Cycle Peak
Current-Limit Threshold
Number of Consecutive Peak
Current-Limit Events to Hiccup
Current-Sense Leading-Edge
Blanking Time
Propagation Delay from
Comparator Input to NDRV
Minimum On-Time
V CS-PEAK
N HICCUP
t CS-BLANK
t PDCS
t ON-MIN
From NDRV rising edge
From CS rising (10mV overdrive) to
NDRV falling (excluding leading-edge
blanking)
375
100
393
8
115
35
150
410
200
mV
Events
ns
ns
ns
SLOPE COMPENSATION (CSSC)
Slope Compensation Current
Ramp Height
Current ramp’s peak added to CSSC
input per switching cycle
47
52
58
F A
PWM COMPARATOR
Comparator Offset Voltage
Current-Sense Gain
Current-Sense Leading-Edge
Blanking Time
Comparator Propagation Delay
V PWM-OS
A CS-PWM
t CSSC-BLANK
t PWM
V COMP - V CSSC
D V COMP / D V CSSC (Note 4)
From NDRV rising edge
Change in V CSSC = 10mV (including
internal leading-edge blanking)
1.35
3.1
1.7
3.33
115
150
2
3.6
V
V/V
ns
ns
ERROR AMPLIFIER
FB Reference Voltage
FB Input Bias Current
V REF
I FB
V FB when I COMP = 0, V COMP = 2.5V
V FB = 0 to 1.75V
1.202
-500
1.215
1.227
+100
V
nA
Voltage Gain
A EAMP
80
dB
Transconductance
Transconductance Bandwidth
g M
BW
Open loop (typical gain = 1) -3dB
frequency
1.8
2.66
30
3.5
mS
MHz
Source Current
Sink Current
V FB = 1V, V COMP = 2.5V
V FB = 1.75V, V COMP = 1V
300
300
375
375
455
455
F A
F A
FREQUENCY FOLDBACK (FFB)
V CSAVG -to-FFB Comparator
Gain
10
V/V
FFB Bias Current
I FFB
V FFB = 0V, V CS = 0V (not in FFB mode)
26
30
33
F A
NDRV Switching Frequency
During Foldback
f SW-FB
f SW /2
kHz
Note 2: The devices are 100% production tested at T A = +25 N C. Limits over temperature are guaranteed by design.
Note 3: See the Output Short-Circuit Protection with Hiccup Mode section.
Note 4: The parameter is measured at the trip point of latch with V FB = 0V. Gain is defined as D V COMP / D V CSSC for 0.15V <
D V CSSC < 0.25V.
4
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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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