參數(shù)資料
型號(hào)： LTC1876EG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： High Efficiency, 2-Phase, Dual Synchronous Step-Down Switching Controller and Step-Up Regulator
中文描述： 3 A SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO36
封裝： PLASTIC, SSOP-36
文件頁(yè)數(shù)： 1/36頁(yè)
文件大?。?/td> 424K
代理商： LTC1876EG
LTC1876
1
1876fa
APPLICATIU
FEATURES
Step-Down Controller
I
Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise
I
Power Good Output Voltage Indicator
I
OPTI-LOOP
TM
Compensation Minimizes C
OUT
I
DC Programmed Fixed Frequency 150kHz to 300kHz
I
Wide V
IN
Range: 3.5V to 36V Operation
I
Very Low Dropout Operation: 99% Duty Cycle
I
Adjustable Soft-Start Current Ramping
I
Latched Short-Circuit Shutdown with Defeat Option
I
Remote Output Voltage Sense and OV Protection
I
5V and 3.3V Standby Regulators
I
Selectable Const. Freq. or Burst Mode
TM
Operation
Step-Up Regulator
I
High Operating Switching Frequency of 1.2MHz
I
Low Internal V
CESAT
Switch: 400mV @ 1A, V
IN
= 3V
I
Wide
V
IN
Range: 2.6V to 16V Operation
I
High Output Voltage: Up to 34V
DESCRIPTIOU
The LTC
1876 is a high performance triple output switching
regulator. It incorporates a dual step-down switching con-
troller that drives all N-channel synchronous power MOSFET
stages. A step-up regulator with an internal 1A, 36V switch
provides the third output.
The step-down controllers minimize power loss and noise
by operating the output stage of each controller out of
phase. OPTI-LOOP compensation allows the transient
response to be optimized over a wide range of output
capacitance and ESR values. A RUN/SS pin for each
controller provides both soft-start and an optional timed,
short-circuit shutdown that can be configured to latch off
one or both controllers. Current foldback provides
additional short-circuit protection. In an overvoltage
condition, the bottom MOSFET is latched on until V
OUT
returns to normal. The FCB pin can be used to inhibit Burst
Mode operation or to enable regulation of a secondary
output voltage.
The step-up regulator operates at 1.2MHz, allowing the
use of tiny low cost capacitors and inductors. In addition,
its internal 1A switch allows high current outputs to be
generated. Its current mode control scheme provides
excellent line and load regulation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are trademarks of Linear Technology Corporation.
TYPICAL APPLICATIOU
V
IN
5.2V
TO 28V
High Efficiency, 2-Phase,
Dual Synchronous Step-Down Switching
Controller and Step-Up Regulator
I
3.3V Input Step-Down Converter
I
Notebook and Palmtop Computers, PDAs
I
Battery-Operated Digital Devices
Figure 1. High Efficiency Triple 5V/3.3V/12V Power Supply
4.7
μ
F
10V
M4
M3
0.1
μ
F
63.4k
1%
1000pF
6.3
μ
H
220pF
1
μ
F
CER
33
μ
F
35V
ALUM
10
μ
F
35V
CER
+
56
μ
F
4V
SP
0.01
20k
1%
15k
V
OUT2
5A
M2
M1
0.1
μ
F
105k
1%
6.8
μ
H
220pF
1000pF
+
+
+
+
47
μ
F
6.3V
SP
0.01
20k
1%
10.2k
1%
15k
V
OUT1
5V
4A
V
OUT3
12V
200mA
TG2
TG1
BOOST2
BOOST1
SW2
SW1
BG2
BG1
PGND
PGOOD
SENSE2
+
SENSE2
–
AUXSW
AUXV
FB
AUXSD
SENSE1
+
SENSE1
–
V
OSENSE2
V
OSENSE1
I
TH2
RUN/SS2
I
TH1
AUXV
IN
V
IN
INTV
CC
RUN/SS1
M1, M2, M3, M4: FDS6680A
1876 TA01
0.1
μ
F
0.1
μ
F
LTC1876
SGND
86.6k,
1%
10
μ
H
10
μ
F
20V
相關(guān)PDF資料
PDF描述
LTC1877EMS8 High Efficiency Monolithic Synchronous Step-Down Regulator
LTC1878EMS8 High Efficiency Monolithic Synchronous Step-Down Regulator
LTC1928ES6-5 Doubler Charge Pump with Low Noise Linear Regulator in ThinSOT
LTC1928-5 Doubler Charge Pump with Low Noise Linear Regulator in ThinSOT
LTC2054 Low Power Zero-Drift Operational Amplifiers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1876EG#PBF 功能描述:IC REG CTRLR BST PWM CM 36-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1876EG#TR 功能描述:IC REG CTRLR BST PWM CM 36-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1876EG#TRPBF 功能描述:IC REG CTRLR BST PWM CM 36-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1877EMS8 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開(kāi)關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤
LTC1877EMS8#PBF 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
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

*
*
*