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參數(shù)資料
| 型號： | LTC3405AES6 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 239K |
| 代理商： | LTC3405AES6 |
1
LTC3405A
3405af
I
High Efficiency: Up to 96%
I
Very Low Quiescent Current: Only 20
μ
A
During Operation
I
300mA Output Current at V
IN
= 3V
I
2.5V to 5.5V Input Voltage Range
I
1.5MHz Constant Frequency Operation
I
No Schottky Diode Required
I
Low Dropout Operation: 100% Duty Cycle
I
Stable with Ceramic Capacitors
I
0.8V Reference Allows Low Output Voltages
I
Shutdown Mode Draws <1
μ
A Supply Current
I
±
2% Output Voltage Accuracy
I
Current Mode Operation for Excellent Line and
Load Transient Response
I
Overtemperature Protected
I
Low Profile (1mm) ThinSOT
TM
Package
APPLICATIU
The LTC
3405A is a high efficiency monolithic synchro-
nous buck regulator using a constant frequency, current
mode architecture. Supply current during operation is
only 20
μ
A and drops to <1
μ
A in shutdown. The 2.5V to
5.5V input voltage range makes the LTC3405A 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 LTC3405A is specifically designed to work well with
ceramic output capacitors, achieving very low output
voltage ripple and a small PCB footprint.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. Low
output voltages are easily supported with the 0.8V feed-
back reference voltage. The LTC3405A is available in a low
profile (1mm) ThinSOT package.
For fixed 1.5V and 1.8V output versions, refer to the
LTC3405A-1.5/LTC3405A-1.8 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
I
Cellular Telephones
I
Personal Information Appliances
I
Wireless and DSL Modems
I
Digital Still Cameras
I
MP3 Players
I
Portable Instruments
Figure 1a. High Efficiency Step-Down Converter
1.5MHz, 300mA
Synchronous Step-Down
Regulator in ThinSOT
Figure 1b. Efficiency vs Load Current
V
IN
C
IN
2.2
μ
F
CER
V
IN
2.7V
TO 5.5V
*
**
LTC3405A
RUN
MODE
3
4.7
μ
H**
22pF
887k
280k
3405A F01a
V
OUT
CONNECTED TO V
IN
FOR 2.7V < V
IN
< 3.3V
MURATA LQH3C4R7M34
TAIYO YUDEN LMK212BJ225MG
TAIYO YUDEN JMK212BJ475MG
5
4
6
1
2
SW
V
FB
GND
C
OUT
4.7
μ
F
CER
V
*
3.3V
OUTPUT CURRENT (mA)
0.1
E
10
1000
100
95
90
85
80
75
70
65
60
3405A F01b
1
100
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5.5V
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3405AES6#PBF | 制造商:Linear Technology 功能描述:IC DC-DC CONV 1.5 MHz 6-SOT-23 制造商:Linear Technology 功能描述:BUCK 0.3A 1.8V 1.5MHZ 6TSOT23 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 1.5 MHz, 6-SOT-23 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 1.5 MHz, 6-SOT-23; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:800mV; Output Current:300mA; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LTC3405AES6#TR | 功能描述:IC REG BUCK SYNC ADJ .3A SOT23-6 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(biāo)準(zhǔn)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 |
| LTC3405AES6#TRM | 功能描述:IC REG BUCK SYNC ADJ .3A SOT23-6 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(biāo)準(zhǔn)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 |
| LTC3405AES6#TRMPBF | 功能描述:IC REG BUCK SYNC ADJ .3A SOT23-6 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:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):1MHz 電流 - 輸出:1.5A 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:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| LTC3405AES6#TRPBF | 功能描述:IC REG BUCK SYNC ADJ .3A SOT23-6 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(biāo)準(zhǔn)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 |
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