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参数资料
| 型号： | MAX5051AUI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/21页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM VM 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 48% |
| 电源电压： | 11 V ~ 76 V |
| 降压： | 无 |
| 升压： | 是 |
| 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： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
Parallelable, Clamped Two-Switch
Power-Supply Controller IC
Typical Operating Characteristics (continued)
(V AVIN = V PVIN = 12V, V UVLO = V STT = 3V, V CON = 3V, R RCOSC = 24k ? , C CSS = 10nF, C RCOSC = 100pF, C REG9 = 4.7μF, C REG5 =
4.7μF, T A = +25 ° C, unless otherwise noted.)
CON TO DRVL PROPAGATION DELAY
vs. TEMPERATURE
CS CURRENT LIMIT TO DRVH
PROPAGATION DELAY vs. TEMPERATURE
110
105
50mV OVERDRIVE
150
140
50mV OVERDRIVE
100
95
90
85
80
75
70
65
60
130
120
110
100
90
80
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
NAME
RCOSC
SYNCOUT
RCFF
CON
CSS
COMP
FB
REG5
REG9
PVIN
STT
LXVDD
FUNCTION
Oscillator Frequency Set Input. Connect a resistor from RCOSC to REG5 and a capacitor from RCOSC to GND
to set the oscillator frequency. Switching frequency is 1/2 the frequency of the sawtooth signal at RCOSC.
Synchronization Output. Synchronization signal to drive SYNCIN of a second MAX5051, if used.
Feed-Forward Input. Connect a resistor from RCFF to AVIN and a capacitor from RCFF to GND. This is
the PWM ramp.
PWM Comparator Noninverting Input. Connect CON to the optocoupler output for isolated applications,
or to COMP for nonisolated applications.
Soft-Start and Reference. Connect a 0.01μF or greater capacitor from CSS to GND. The 1.24V reference
voltage appears across this capacitor.
Internal Error Amplifier Output
Feedback Input. Inverting input of the internal error amplifier. The soft-started reference is connected to
the noninverting input of this amplifier.
5V Linear Regulator Output. Bypass REG5 to GND with a 4.7μF ceramic capacitor.
9V Linear Regulator Output. Bypass REG9 to GND with a 4.7μF ceramic capacitor.
Regulator Voltage Input. Voltage input to the internal 5V and 9V linear regulators. A high-value resistor
connected from the input supply to PVIN provides the necessary current to charge up the startup
capacitor, and the 400μA standby current required by the MAX5051. After startup, the output of a tertiary
winding is used to provide continued bias to the controller.
Startup Threshold Input. Leave STT floating for a default startup voltage of 24V at PVIN. STT can be
modified by connecting external resistors. For high accuracy, choose external resistors with 50k ? or less
impedance looking back into the divider.
Supply Input for the Secondary-Side Synchronous Pulse Transformer or Optocoupler Driver. LXVDD is
normally connected to REG5.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5051EUI+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5051EVKIT | 功能描述:电源管理IC开发工具 MAX5051 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX5052 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies |
| MAX5052AEUA | 功能描述:电流型 PWM 控制器 w/Error Amplifier 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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