L4977A中文資料意法半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書
| 廠商型號 |
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)簡稱 |
STMICROELECTRONICS【意法半導(dǎo)體】 |
| 中文名稱 | 意法半導(dǎo)體（ST）集團(tuán)官網(wǎng) |
| 原廠標(biāo)識 |  |
| 數(shù)據(jù)手冊 | |
| 更新時(shí)間 | 2024-11-14 10:54:00 |
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：
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 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ST |
22+ |
ZIP-15 |
2800 |
原裝現(xiàn)貨!可長期供貨! |
詢價(jià) | ||
STM原廠目錄 |
24+ |
MW15L |
96000 |
全新原裝 |
詢價(jià) | ||
ST |
23+ |
ZIP-15 |
3260 |
絕對全新原裝!優(yōu)勢供貨渠道!特價(jià)!請放心訂購! |
詢價(jià) | ||
ST |
17+ |
原廠原封 |
6523 |
進(jìn)口原裝公司百分百現(xiàn)貨可出樣品 |
詢價(jià) | ||
ST(意法) |
23+ |
N/A |
589610 |
新到現(xiàn)貨 原廠一手貨源 價(jià)格秒殺代理! |
詢價(jià) | ||
ST/意法 |
22+ |
Multiwatt-15 |
14100 |
原裝正品 |
詢價(jià) | ||
ST/意法半導(dǎo)體 |
23+ |
Multiwatt-15 |
12700 |
買原裝認(rèn)準(zhǔn)中賽美 |
詢價(jià) | ||
ST/意法半導(dǎo)體 |
2023+ |
Multiwatt-15 |
6000 |
原裝正品現(xiàn)貨、支持第三方檢驗(yàn)、終端BOM表可配單提供 |
詢價(jià) | ||
ST意法半導(dǎo)體 |
24+23+ |
ZIP |
12580 |
16年現(xiàn)貨庫存供應(yīng)商終端BOM表可配單提供樣品 |
詢價(jià) | ||
STMicroelectronics |
18+ |
ICREGBUCKADJ7A15MULTIWAT |
6800 |
公司原裝現(xiàn)貨 |
詢價(jià) |
