參數(shù)資料
型號(hào)： LT1578IS8-2.5
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù)： 1/28頁(yè)
文件大小： 286K
代理商： LT1578IS8-2.5
1
LT1578/LT1578-2.5
1.5A, 200kHz Step-Down
Switching Regulator
3.3V Buck Converter
Efficiency vs Load Current
I
1.5A Switch Current
I
High Efficiency—Low Loss 0.2
Switch
I
Constant 200kHz Switching Frequency
I
4V to 15V Input VoltageRange
I
Minimum Output: 1.21V
I
Low Supply Current: 1.9mA
I
Low Shutdown Current: 20
μ
A
I
Easily Synchronizable Up to 400kHz
I
Cycle-by-Cycle Current Limit
I
Reduced EMI Generation
I
Low Thermal Resistance SO-8 Package
I
Uses Small Low Value Inductors
The LT
1578 is a 200kHz monolithic buck mode switching
regulator. A 1.5A switch is included on the die along with
all the necessary oscillator, control and logic circuitry. The
topology is current mode for fast transient response and
good loop stability. The LT1578 is a modified version of the
LT1507 that has been optimized for noise sensitive appli-
cations. It will operate over a 4V to 15V input range.
In addition, the reference voltage has been lowered to al-
low the device to produce output voltages down to 1.2V.
Quiescent current has been reduced by a factor of two.
Switch on resistance has been reduced by 30%. Switch tran-
sition times have been slowed to reduce EMI generation.
The oscillator frequency has been reduced to 200kHz to
maintain high efficiency over a wide output current range.
The pinout has been changed to improve PC layout by al-
lowing the high current, high frequency switching circuitry
to be easily isolated from low current, noise sensitive con-
trol circuitry. The new SO-8 package includes a fused
ground lead that significantly reduces the thermal resistance
of the device to extend the ambient operating temperature
range. Standard surface mount external parts can be used
including the inductor and capacitors.
I
Portable Computers
I
Battery-Powered Systems
I
Battery Chargers
I
Distributed Power Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
LOAD CURRENT (A)
0
E
90
85
80
75
70
65
60
55
50
0.25
0.50
0.75
1.00
1578 TA02
1.25
1.50
V
OUT
= 3.3V
V
= 5V
L = 25
μ
H
DESCRIPTIOU
FEATURES
APPLICATIU
BOOST
LT1578
V
IN
SHDN
OUTPUT**
3.3V, 1.25A
* RIPPLE CURRENT RATING
≥
I
/2
** INCREASE L1 TO 30
μ
H FOR LOAD
CURRENTS ABOVE 0.6A AND TO
60
μ
H ABOVE 1A
SEE APPLICATIONS INFORMATION
INPUT
5V TO 15V
1578 TA01
C2
0.33
μ
F
C
100pF
D1
1N5818
C1
100
μ
F, 10V
SOLID
TANTALUM
C3*
10
μ
F TO
50
μ
F
OPEN = ON
D2
1N914
L1**
15
μ
H
V
SW
FB
GND
V
C
+
+
R2
4.99k
8R1
TYPICAL APPLICATIO
N
U
相關(guān)PDF資料
PDF描述
LT1578C CAP 22UF 50V ELECT TG SMD
LT1578CS8 CAP 47UF 50V ELECT TG SMD
LT1578CS8-2.5 CAP 10UF 63V ELECT TG SMD
LT1578I CAP 22UF 63V ELECT TG SMD
LT1578 1.5A, 200kHz Step-Down Switching Regulator(1.5A, 200kHz，步降開(kāi)關(guān)穩(wěn)壓器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1579 制造商:LINER 制造商全稱:Linear Technology 功能描述:300mA Dual Input Smart Battery Backup Regulator
LT1579-3 制造商:LINER 制造商全稱:Linear Technology 功能描述:300mA Dual Input Smart Battery Backup Regulator
LT1579CGN 功能描述:IC LDO REG SMART DUAL ADJ 16SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁(yè)面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2
LT1579CGN#PBF 功能描述:IC LDO REG SMART DUAL ADJ 16SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁(yè)面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2
LT1579CGN#TR 功能描述:IC REG LDO SMART DUAL ADJ 16SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*