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參數資料
| 型號： | LTC3614IUDD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 10.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 3 X 5 MM, LEAD FREE, PLASTIC, QFN-24 |
| 文件頁數： | 1/30頁 |
| 文件大小： | 438K |
| 代理商： | LTC3614IUDD#PBF |
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LTC3614
1
3614fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
4A, 4MHz Monolithic
Synchronous Step-Down
DC/DC Converter
The LTC3614 is a low quiescent current monolithic syn-
chronous buck regulator using a current mode, constant
frequency architecture. The no-load DC supply current
in sleep mode is only 75μA while maintaining the output
voltage (Burst Mode operation) at no load, dropping to zero
current in shutdown. The 2.25V to 5.5V input supply voltage
range makes the LTC3614 ideally suited for single Li-Ion
as well as xed low voltage input applications. 100% duty
cycle capability provides low dropout operation, extending
the operating time in battery-powered systems.
The operating frequency is externally programmable up to
4MHz, allowing the use of small surface mount inductors.
For switching-noise-sensitive applications, the LTC3614
can be synchronized to an external clock at up to 4MHz.
Forced continuous mode operation in the LTC3614 reduces
noise and RF interference. Adjustable compensation allows
the transient response to be optimized over a wide range
of loads and output capacitors.
The internal synchronous switch increases efciency and
eliminates the need for an external catch diode, saving
external components and board space. The LTC3614 is
offered in a leadless 24-pin 3mm × 5mm thermally en-
hanced QFN package.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6580258, 5481178, 5994885, 6304066, 6498466, 6611131.
Efciency and Power Loss
vs Load Current
n 4A Output Current
n 2.25V to 5.5V Input Voltage Range
n Low Output Ripple Burst Mode Operation: IQ = 75μA
n ±1% Output Voltage Accuracy
n Output Voltage Down to 0.6V
n High Efciency: Up to 95%
n Low Dropout Operation: 100% Duty Cycle
n Programmable Slew Rate on SW Node Reduces
Noise and EMI
n Adjustable Switching Frequency: Up to 4MHz
n Optional Active Voltage Positioning (AVP) with
Internal Compensation
n Selectable Pulse-Skipping/Forced Continuous/Burst
Mode Operation with Adjustable Burst Clamp
n Programmable Soft-Start
n Inputs for Start-Up Tracking or External Reference
n DDR Memory Mode, IOUT = ±3A
n Available in a 24-Pin 3mm × 5mm QFN
Thermally Enhanced Package
n Point-of-Load Supplies
n Distributed Power Supplies
n Portable Computer Systems
n DDR Memory Termination
n Handheld Devices
OUTPUT CURRENT (mA)
30
EFFICIENCY
(%)
POWER
LOSS
(W)
90
100
20
10
80
50
70
60
40
1
100
1000
10000
3614 TA01b
0
1
0.1
0.01
10
VIN = 2.8V
VIN = 3.3V
VIN = 5V
VOUT = 2.5V
RUN
TRACK/SS
RT/SYNC
PGOOD
ITH
SGND
PGND
VIN
2.7V TO 5.5V
SRLIM/DDR
SVIN
LTC3614
SW
PVIN
330nH
665k
210k
3614 TA01a
10μF
4
MODE
VFB
47μF
2
VOUT
2.5V
4A
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| LTC3614EUDD#PBF | 10.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PQCC24 |
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| LTC3614MPUDD#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 4A 24QFN |
| LTC3614MPUDD#TRPBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 4A 24QFN |
| LTC3615EFE#PBF | 功能描述:IC REG BUCK SYNC ADJ 3A 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:100mA 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:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LTC3615EFE#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 3A 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:100mA 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:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LTC3615EFE-1#PBF | 功能描述:IC REG BUCK SYNC ADJ 3A 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數:1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:100mA 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:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
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