- 您现在的位置：买卖IC网 > PDF目录1839 > MAX17067EUA+T (Maxim Integrated Products)IC REG BOOST ADJ 0.3A 8UMAX PDF资料下载
参数资料
| 型号： | MAX17067EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.3A 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 18 V |
| 输入电压： | 2.6 V ~ 4 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 640kHz，1.2MHz |
| 电流 - 输出： | 300mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-uMAX |
Low-Noise Step-Up DC-DC Converter
Pin Description
PIN
1
2
3
4
5
6
7
8
V IN
NAME
COMP
FB
SHDN
GND
LX
IN
FREQ
SS
C IN
FUNCTION
Compensation Pin for Error Amplifier. Connect a series RC from COMP to ground. See the Loop
Compensation section for component selection guidelines.
Feedback Pin. Reference voltage is 1.24V nominal. Connect an external resistor-divider tap to FB and
minimize the trace area. Set V OUT according to: V OUT = 1.24V (1 + R1 / R2). See Figure 1.
Active-Low Shutdown Control Input. Drive SHDN low to turn off the MAX17067.
Ground
Switch Pin. Connect the inductor/catch diode to LX and minimize the trace area for lowest EMI.
Supply Pin. Bypass IN with at least a 1μF ceramic capacitor directly to GND.
Frequency Select Input. When FREQ is low, the oscillator frequency is set to 640kHz. When FREQ is high,
the frequency is 1.2MHz. This input has a 5μA pulldown current.
Soft-Start Control Pin. Connect a soft-start capacitor (C SS ) to this pin. Leave open for no soft-start. The soft-
start capacitor is charged with a constant current of 4μA. Full current limit is reached after t = 2.5 x 10 5 C SS .
The soft-start capacitor is discharged to ground when SHDN is low. When SHDN goes high, the soft-start
capacitor is charged to 0.5V, after which soft-start begins.
Detailed Description
The MAX17067 is a highly efficient power supply that
2.6V TO 4.0V
C1
10 μ F
6.3V
L
employs a current-mode, fixed-frequency PWM architec-
ture for fast-transient response and low-noise operation.
The device regulates the output voltage through a com-
ON/OFF
V IN
1.2MHz
IN
SHDN
MAX17067
LX
D1
MBRS130LT1
V OUT
C OUT
bination of an error amplifier, two comparators, and sev-
eral signal generators (Figure 2). The error amplifier
compares the signal at FB to 1.24V and varies the
COMP output. The voltage at COMP determines the cur-
rent trip point each time the internal MOSFET turns on.
640kHz
FREQ
GND
As the load varies, the error amplifier sources or sinks
current to the COMP output accordingly to produce the
inductor peak current necessary to service the load. To
0.027 μ F
SS
COMP
FB
R2
R1
maintain stability at high duty cycle, a slope-compensa-
tion signal is summed with the current-sense signal.
At light loads, this architecture allows the ICs to “skip”
cycles to prevent overcharging the output voltage. In
C COMP2
R COMP
this region of operation, the inductor ramps up to a fixed
peak value, discharges to the output, and waits until
another pulse is needed again.
C COMP
Figure 1. Typical Application Circuit
6
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1706EEE+T | IC REG BOOST ADJ 0.4A 16QSOP |
| MAX17075ETG+T | IC DC-DC CONV W/CHRG PUMP 24TQFN |
| MAX17080GTL+T | IC CONTROLLER AMD SVI 40-TQFN |
| MAX17083ETG+T | IC REG BUCK ADJ 5A 24TQFN |
| MAX17085GTL+ | IC CHARGER/CTLR/LDO REG 40-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17068AAX/V+ | 制造商:Maxim Integrated Products 功能描述:10-CHANNEL HIGH-VOLTAGE SENSOR SMART DATA-ACQUISITION INTERF - Rail/Tube |
| MAX17069AAX+ | 制造商:Maxim Integrated Products 功能描述:10-CHANNEL HIGH-VOLTAGE SENSOR SMART DATA-ACQUISITION INTERF - Rail/Tube |
| MAX1706EEE | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up w/Linear Regulator RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1706EEE+ | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up w/Linear Regulator RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1706EEE+T | 功能描述:直流/直流开关转换器 1-3 Cell Step-Up w/Linear Regulator RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。