MAX649ESA中文資料美信數(shù)據(jù)手冊PDF規(guī)格書
MAX649ESA規(guī)格書詳情
General Description
The MAX649/MAX651/MAX652 BiCMOS, step-down DC-DC switching controllers provide high efficiency over three decades of load current. A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using only 100μA of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over loads ranging from 10mA to more than 2.5A.
These devices use miniature external components. Their high switching frequency (up to 300kHz) allows for less than 9mm diameter surface-mount inductors.
The MAX649/MAX651/MAX652 have dropout voltages less than 1V and accept input voltages up to 16.5V. Output voltages are preset at 5V (MAX649), 3.3V (MAX651), and 3V (MAX652). These controllers can also be adjusted to any voltage from 1.5V to the input voltage by using two resistors.
These step-down controllers drive external P-channel MOSFETs at loads greater than 10W. If less power is required, use the MAX639/MAX640/MAX653 step-down converters with on-chip FETs, which allow up to a 225mA load current.
Features
? More than 90 Efficiency (10mA to 1.5A Loads)
? More than 12.5W Output Power
? 100μA Max Quiescent Supply Current
? 5μA Max Shutdown Supply Current
? Less than 1.0V Dropout Voltage
? 16.5V Max Input Voltage
? 5V (MAX649), 3.3V (MAX651), 3V (MAX652), or Adjustable Output Voltage
? Current-Limited Control Scheme
? Up to 300kHz Switching Frequency
Applications
?? 5V-to-3.3V Green PC Applications
?? High-Efficiency Step-Down Regulation
?? Minimum-Component DC-DC Converters
?? Battery-Powered Applications
產(chǎn)品屬性
- 型號(hào)：
MAX649ESA
- 功能描述：
DC/DC 開關(guān)控制器 3/3.3/5/ADJ V STEP DOWN DC-DC
- RoHS：
否
- 制造商：
Texas Instruments
- 輸入電壓：
6 V to 100 V
- 輸出電壓：
1.215 V to 80 V
- 輸出電流：
3.5 A
- 輸出端數(shù)量：
1
- 最大工作溫度：
+ 125 C
- 封裝/箱體：
CPAK
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
MAXIM |
19+ |
SOP8 |
256800 |
原廠代理渠道,每一顆芯片都可追溯原廠； |
詢價(jià) | ||
MAXIM |
SOP8 |
2974 |
一級(jí)代理 原裝正品假一罰十價(jià)格優(yōu)勢長期供貨 |
詢價(jià) | |||
MAXIM/美信 |
22+ |
38343 |
鄭重承諾只做原裝進(jìn)口現(xiàn)貨 |
詢價(jià) | |||
MAXIM |
23+ |
SMD |
4500 |
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售! |
詢價(jià) | ||
MAX |
22+ |
原廠原封 |
8200 |
原裝現(xiàn)貨庫存.價(jià)格優(yōu)勢!! |
詢價(jià) | ||
MAXIM |
2023+ |
SOP8 |
50000 |
全新原裝現(xiàn)貨 |
詢價(jià) | ||
MAXIM |
0138 |
2 |
優(yōu)勢貨源原裝正品 |
詢價(jià) | |||
Maxim |
2023 |
NA |
7074 |
原廠代理渠道,正品保障 |
詢價(jià) | ||
MAXIM |
22+ |
SOP8 |
25000 |
只做原裝進(jìn)口現(xiàn)貨,專注配單 |
詢價(jià) | ||
MAXIM/美信 |
24+ |
SOP8 |
2646 |
只做原廠渠道 可追溯貨源 |
詢價(jià) |
