- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382258 > LTC3403 (Linear Technology Corporation) 1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor PDF資料下載
參數(shù)資料
| 型號： | LTC3403 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor |
| 中文描述： | 1.5MHz的，600毫安同步降壓型穩(wěn)壓器旁路晶體管 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 920K |
| 代理商： | LTC3403 |
1
LTC3403
3403f
APPLICATIU
TYPICAL APPLICATIOU
I
WCDMA Cell Phone Power Amplifiers
I
Wireless Modems
Figure 1a. WCDMA Transmitter Power Supply
Figure 1b. Efficiency vs Output Current
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
V
IN
C
IN
10
μ
F
CER
V
IN
2.7V
TO 5V
*
**
LTC3403
MODE
RUN
REF
2.2
μ
H*
3403 F01a
MURATA LQH32CN2R2M11
TAIYO YUDEN JMK212BJ475MG
TAIYO YUDEN JMK212BJ106MN
3
SW
GDR
V
OUT
GND
C
OUT
**
4.7
μ
F
CER
V
OUT
3
×
V
REF
600mA
WCDMA
RF PA
OUTPUT
PROGRAMMING
DAC
OUTPUT CURRENT (mA)
60
E
70
75
85
95
0.1
10
100
1000
3403 F01b
50
1
80
65
55
90
V
IN
= 3.6V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 4.2V
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
V
OUT
= 1.8V
1.5MHz, 600mA
Synchronous Step-Down
Regulator with Bypass Transistor
DESCRIPTIOU
The LTC
3403 is a high efficiency monolithic synchro-
nous buck regulator optimized for WCDMA power ampli-
fier applications. The output voltage can be dynamically
programmed from 0.3V to 3.5V. At V
OUT
> 3.6V an internal
bypass P-channel MOSFET connects V
OUT
directly to V
IN
,
eliminating power loss through the inductor. Selectable
forced continuous mode enables fast V
OUT
response to the
controlling input.
Supply current is only 20
μ
A in Burst Mode
operation and
drops to <1
μ
A in shutdown. The 2.5V to 5V input voltage
range makes the LTC3403 ideally suited for single Li-Ion
battery-powered applications. 100% duty cycle provides
low dropout operation, extending battery life in portable
systems.
Switching frequency is internally set at 1.5MHz, allowing
the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode.
The LTC3403 is available in a low profile 8-lead 3mm
×
3mm DFN package.
FEATURES
I
Dynamically Adjustable Output from 0.3V to 3.5V
I
Very Low Quiescent Current: Only 20
μ
A
During Operation
I
600mA Output Current
I
Internal P-Channel MOSFET Bypass Transistor
I
High Efficiency: Up to 96%
I
1.5MHz Constant Frequency Operation
I
No Schottky Diode Required
I
Low Dropout Operation: 100% Duty Cycle
I
2.5V to 5V Input Voltage Range
I
Drives Optional External P-Channel MOSFET
I
Shutdown Mode Draws <1
μ
A Supply Current
I
Current Mode Operation for Excellent Line and
Load Transient Response
I
Overtemperature Protected
I
Available in 8-Lead 3mm
×
3mm DFN Package
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC3404EMS8 | 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator |
| LTC3404 | 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator |
| LTC3418EUHF | 8A, 4MHz, Monolithic Synchronous Step-Down Regulator |
| LTC3418 | 3.3-V CMOS 18-Bit Universal Bus Driver with 3-State Outputs 56-TVSOP -40 to 85 |
| LTC3421 | 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3403EDD | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8DFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC3403EDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC3403EDD#TR | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8DFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC3403EDD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC3404 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。