- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44988 > LTC1871HMS#TR (LINEAR TECHNOLOGY CORP) 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC1871HMS#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大?。?/td> | 519K |
| 代理商： | LTC1871HMS#TR |
當(dāng)前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
LTC1871
1
1871fe
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Wide Input Range, No RSENSE
Current Mode Boost,
Flyback and SEPIC Controller
The LTC1871 is a wide input range, current mode, boost,
yback or SEPIC controller that drives an N-channel power
MOSFET and requires very few external components. In-
tended for low to medium power applications, it eliminates
the need for a current sense resistor by utilizing the power
MOSFET’s on-resistance, thereby maximizing efciency.
The IC’s operating frequency can be set with an external
resistor over a 50kHz to 1MHz range, and can be syn-
chronized to an external clock using the MODE/SYNC
pin. Burst Mode operation at light loads, a low minimum
operating supply voltage of 2.5V and a low shutdown
quiescent current of 10μA make the LTC1871 ideally suited
for battery-operated systems.
For applications requiring constant frequency opera-
tion, Burst Mode operation can be defeated using the
MODE/SYNC pin. Higher output voltage boost, SEPIC
and yback applications are possible with the LTC1871
by connecting the SENSE pin to a resistor in the source
of the power MOSFET.
The LTC1871 is available in the 10-lead MSOP package.
Efciency of Figure 1
n High Efciency (No Sense Resistor Required)
n Wide Input Voltage Range: 2.5V to 36V
n Current Mode Control Provides Excellent
Transient Response
n High Maximum Duty Cycle (92% Typ)
n ±2% RUN Pin Threshold with 100mV Hysteresis
n ±1% Internal Voltage Reference
n Micropower Shutdown: IQ = 10μA
n Programmable Operating Frequency
(50kHz to 1MHz) with One External Resistor
n Synchronizable to an External Clock Up to 1.3 × fOSC
n User-Controlled Pulse Skip or Burst Mode Operation
n Internal 5.2V Low Dropout Voltage Regulator
n Output Overvoltage Protection
n Capable of Operating with a Sense Resistor for
High Output Voltage Applications
n Small 10-Lead MSOP Package
n Telecom Power Supplies
n Portable Electronic Equipment
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Figure 1. High Efciency 3.3V Input, 5V Output Boost Converter (Bootstrapped)
+
RUN
ITH
FB
FREQ
MODE/SYNC
SENSE
VIN
INTVCC
GATE
GND
LTC1871
RT
80.6k
1%
R2
37.4k
1%
R1
12.1k
1%
CVCC
4.7μF
X5R
CIN
22μF
6.3V
×2
M1
D1
L1
1μH
RC
22k
CC1
6.8nF
CC2
47pF
COUT1
150μF
6.3V
×4
VIN
3.3V
VOUT
5V
7A
(10A PEAK)
GND
1871 F01a
+
COUT2
22μF
6.3V
X5R
×2
CIN:
TAIYO YUDEN JMK325BJ226MM
COUT1: PANASONIC EEFUEOJ151R
COUT2: TAIYO YUDEN JMK325BJ226MM
D1: MBRB2515L
L1: SUMIDA CEP125-H 1R0MH
M1: FAIRCHILD FDS7760A
OUTPUT CURRENT (A)
30
EFFICIENCY
(%)
90
100
80
50
70
60
40
0.001
0.1
1
10
1871 F01b
0.01
Burst Mode
OPERATION
PULSE-SKIP
MODE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1871HMS | 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| LTC1877IMS8#TRPBF | 1.5 A SWITCHING REGULATOR, 605 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC1929IG-PG | 3 A DUAL SWITCHING CONTROLLER, 310 kHz SWITCHING FREQ-MAX, PDSO28 |
| LTC203MJ/883B | QUAD 1-CHANNEL, SGL POLE SGL THROW SWITCH, CDIP16 |
| LTC202MJ/883B | QUAD 1-CHANNEL, SGL POLE SGL THROW SWITCH, CDIP16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1871IMS | 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC1871IMS#PBF | 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC1871IMS#TR | 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC1871IMS#TRPBF | 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC1871IMS-1#PBF | 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。