- 您现在的位置：买卖IC网 > PDF目录13236 > MAX761ESA+T (Maxim Integrated Products)IC REG BOOST 12V/ADJ 0.15A 8SOIC PDF资料下载
参数资料
| 型号： | MAX761ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST 12V/ADJ 0.15A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 12V，5 V ~ 16.5 V |
| 输入电压： | 2 V ~ 16.5 V |
| 频率 - 开关： | 300kHz |
| 电流 - 输出： | 150mA |
| 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-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
12V/15V or Adjustable, High-Efficiency,
Low I Q , Step-Up DC-DC Converters
LBO
V+
FB
LBI
N
DUAL-MODE ?
COMPARATOR
MAX761
MAX762
LBI
REF
100mV
ERROR
COMPARATOR
V+
1.5V
REFERENCE
S
Q TRIG
ONE-SHOT
Q
N
TRIG Q
ONE-SHOT
R
LOW INPUT
VOLTAGE
OSCILLATOR
CURRENT
COMPARATOR
0.2V
0.1V
UNDER VOLTAGE
COMPARATOR
N
2.5V
LX
CURRENT CONTROL
CIRCUITRY
GND
Figure 1. Simple Block Diagram
________________Detailed Description
Operating Principle
The MAX761/MAX762 BiCMOS step-up switch-mode
power supplies provide fixed outputs of 12V and 15V,
respectively. They have a unique control scheme that
combines the advantages of pulse-frequency modulation
(low supply current) and pulse-width modulation (high
efficiency at high loads). The internal N-channel power
MOSFET allows 1A peak currents, increasing the output
current capability over previous pulse-frequency-modu-
lation (PFM) devices. Figure 1 shows the MAX761/
MAX762 block diagram.
The MAX761/MAX762 offer three main improvements
over prior solutions: (1) the converters operate with tiny
surface-mount inductors (less than 5mm diameter)
because of their 300kHz switching frequency, (2) the
current-limited PFM control scheme allows 86% efficien-
cies over a wide range of load currents, and (3) the max-
imum supply current is only 110μA.
Bootstrapped/Non-Bootstrapped Modes
Figures 2 and 3 show the standard application circuits
for bootstrapped and non-bootstrapped modes. In boot-
strapped mode, the IC is powered from the output
(V OUT ). In other words, the current needed to power the
bootstrapped circuit is different from the V+ current the
chip consumes. The voltage applied to the gate of the
internal N-channel FET is switched from V OUT to ground,
providing more switch-gate drive and increasing the effi-
ciency of the DC-DC converter compared with non-boot-
strapped operation.
_______________________________________________________________________________________
7
相关PDF资料 |
PDF描述 |
|---|---|
| RSA28DRMI-S288 | CONN EDGECARD 56POS .125 EXTEND |
| 80ZLJ470M18X20 | CAP ALUM 470UF 80V 20% RADIAL |
| EGM22DRMN | CONN EDGECARD 44POS .156 WW |
| VI-2W4-EX-F3 | CONVERTER MOD DC/DC 48V 75W |
| VE-24X-EX-F2 | CONVERTER MOD DC/DC 5.2V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX761EVKIT-SO | 功能描述:电源管理IC开发工具 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 |
| MAX761EVKIT-SO+ | 功能描述:电源管理IC开发工具 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 |
| MAX761MJA | 功能描述:直流/直流开关转换器 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 |
| MAX7624C/D | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX7624CPE | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。