L4977A中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書
| 廠商型號(hào) |
L4977A |
| 功能描述 | 7A SWITCHING REGULATOR |
| 文件大小 |
396.18 Kbytes |
| 頁面數(shù)量 |
21 頁 |
| 生產(chǎn)廠商 | STMicroelectronics |
| 企業(yè)簡(jiǎn)稱 |
STMICROELECTRONICS【意法半導(dǎo)體】 |
| 中文名稱 | 意法半導(dǎo)體集團(tuán)官網(wǎng) |
| 原廠標(biāo)識(shí) |  |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-5-18 8:14:00 |
| 人工找貨 | L4977A價(jià)格和庫(kù)存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
L4977A規(guī)格書詳情
DESCRIPTION
The L4977A is a stepdown monolithic power switching regulator delivering 7A at a voltage variable from 5.1 to 40V.
Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4977A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components.
■ 7A OUTPUT CURRENT
■ 5.1V TO 40V OUTPUT VOLTAGE RANGE
■ 0 TO 90 DUTY CYCLE RANGE
■ INTERNAL FEED-FORWARD LINE REGULATION
■ INTERNAL CURRENT LIMITING
■ PRECISE 5.1V ± 2 ON CHIP REFERENCE
■ RESET AND POWER FAIL FUNCTIONS
■ SOFT START
■ INPUT/OUTPUT SYNC PIN
■ UNDER VOLTAGE LOCK OUT WITH HYS TERETIC TURN-ON
■ PWM LATCH FOR SINGLE PULSE PER PERIOD
■ VERY HIGH EFFICIENCY
■ SWITCHING FREQUENCY UP TO 500KHz
■ THERMAL SHUTDOWN
■ CONTINUOUS MODE OPERATION
產(chǎn)品屬性
- 型號(hào)：
L4977A
- 功能描述：
直流/直流開關(guān)調(diào)節(jié)器 5.1 to 40V 7.0 Amp
- RoHS：
否
- 制造商：
International Rectifier
- 最大輸入電壓：
21 V
- 開關(guān)頻率：
1.5 MHz
- 輸出電壓：
0.5 V to 0.86 V
- 輸出電流：
4 A
- 安裝風(fēng)格：
SMD/SMT
- 封裝/箱體：
PQFN 4 x 5
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ST(意法半導(dǎo)體) |
24+ |
Multiwatt-15 |
5080 |
百分百原裝正品,可原型號(hào)開票 |
詢價(jià) | ||
ST/意法半導(dǎo)體 |
Multiwatt-15 |
6000 |
詢價(jià) | ||||
ST |
2016+ |
ZIP-15 |
3000 |
只做原裝,假一罰十,公司可開17%增值稅發(fā)票! |
詢價(jià) | ||
ST |
23+ |
NA |
3500 |
全新原裝假一賠十 |
詢價(jià) | ||
ST/意法 |
24+ |
NA |
80000 |
只做自己庫(kù)存,全新原裝進(jìn)口正品假一賠百,可開13%增 |
詢價(jià) | ||
ST/意法 |
25+ |
ZIP15 |
54658 |
百分百原裝現(xiàn)貨 實(shí)單必成 |
詢價(jià) | ||
ST |
2017 |
ZIP15 |
1695 |
一級(jí)代理,專注軍工、汽車、醫(yī)療、工業(yè)、新能源、電力 |
詢價(jià) | ||
ST |
23+ |
QFP |
3200 |
全新原裝、誠(chéng)信經(jīng)營(yíng)、公司現(xiàn)貨銷售! |
詢價(jià) | ||
STM |
23+ |
Multiwatt-15 |
65600 |
詢價(jià) | |||
ST/意法半導(dǎo)體 |
21+ |
Multiwatt-15 |
10000 |
全新原裝現(xiàn)貨 |
詢價(jià) |
