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参数资料
| 型号： | MAX1846EUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK INV CM 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 345kHz |
| 占空比： | 98% |
| 电源电压： | 3 V ~ 16.5 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 是 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
High-Efficiency, Current-Mode,
Inverting PWM Controller
Pin Description
MAX1846
PIN
MAX1847
NAME
FUNCTION
Sets polarity of the EXT pin. Connect POL to GND to set EXT for use with an external
—
1
POL
PMOS high-side FET. Connect POL to VL to set EXT for use with an external NMOS low-
side FET in transformer-based applications.
1
2
VL
VL Low-Dropout Regulator. Connect 0.47μF ceramic capacitor from VL to GND.
Oscillator Frequency Set Input. Connect a resistor (R FREQ ) from FREQ to GND to set the
2
3
FREQ
internal oscillator frequency from 100kHz (R FREQ = 500k ? ) to 500kHz (R FREQ = 76.8k ? ).
R FREQ is still required if an external clock is used at SYNC. See Setting the Operating
Frequency section.
3
4
5
—
—
6
7
8
9
10
4
5
6
7, 9
8
10, 11
12
13
14
15
COMP
REF
FB
N.C.
SHDN
GND
PGND
CS
EXT
IN
Compensation Node for Error Amp/Integrator. Connect a series resistor/capacitor network
from COMP to GND for loop compensation. See Design Procedure .
1.25V Reference Output. REF can source up to 500μA. Bypass with a 0.1μF ceramic
capacitor from REF to GND.
Feedback Input. Connect FB to the center of a resistor-divider connected between the
output and REF. The FB threshold is 0.
No Connection
Shutdown Control. Drive SHDN low to turn off the DC-DC controller. Drive high or connect
to IN for normal operation.
Analog Ground. Connect to PGND.
Negative Rail for EXT Driver and Negative Current-Sense Input. Connect to GND.
Positive Current-Sense Input. Connect a current-sense resistor (R CS ) between CS and
External MOSFET Gate-Driver Output. EXT swings from IN to PGND.
Power-Supply Input
Operating Frequency Synchronization Control. Drive SYNC low or connect to GND to set
the internal oscillator frequency with R FREQ . Drive SYNC with a logic-level clock input
—
16
SYNC
signal to externally set the converter’s operating frequency. DC-DC conversion cycles
initiate on the rising edge of the input clock signal. Note that when driving SYNC with an
external signal, R FREQ must still be connected to FREQ.
8
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1846EUB+ | 功能描述:电流型 PWM 控制器 Current-Mode Invert 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 |
| MAX1846EUB+T | 功能描述:电流型 PWM 控制器 Current-Mode Invert 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 |
| MAX1846EUB-T | 功能描述:电流型 PWM 控制器 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 |
| MAX1846EVKIT | 功能描述:电流型 PWM 控制器 Evaluation Kit for the MAX1846 MAX1847 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 |
| MAX1847EEE | 功能描述:电流型 PWM 控制器 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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