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參數資料
| 型號： | LTC3605IUF#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24 |
| 文件頁數： | 1/22頁 |
| 文件大小： | 257K |
| 代理商： | LTC3605IUF#PBF |
LTC3605
1
3605fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
15V, 5A Synchronous
Step-Down Regulator
The LTC3605 is a high efciency, monolithic synchronous
buck regulator using a phase lockable controlled on-time
constant frequency, current mode architecture. PolyPhase
operation allows multiple LTC3605 regulators to run out of
phase while using minimal input and output capacitance.
The operating supply voltage range is from 15V down to
4V, making it suitable for dual lithium-ion battery inputs
as well as point of load power supply applications from
a 12V or 5V rail.
The operating frequency is programmable from 800kHz to
4MHz with an external resistor. The high frequency capabil-
ity allows the use of small surface mount inductors. For
switching noise sensitive applications, it can be externally
synchronized from 800kHz to 4MHz. The PHMODE pin
allows user control of the phase of the outgoing clock
signal. The unique constant frequency/controlled on-time
architecture is ideal for high step-down ratio applications
that are operating at high frequency while demanding
fast transient response. Two internal phase-lock loops
synchronize the internal oscillator to the external clock
and also servos the regulator on-time to lock on to either
the internal clock or the external clock if it’s present.
High Efciency 1MHz, 5A Step-Down Regulator
n High Efciency: Up to 96%
n 5A Output Current
n 4V to 15V VIN Range
n Integrated Power N-Channel MOSFETs
(70mΩ Top and 35mΩ Bottom)
n Adjustable Frequency 800kHz to 4MHz
n PolyPhase Operation (Up to 12 Phases)
n Output Tracking
n 0.6V ±1% Reference Accuracy
n Current Mode Operation for Excellent Line and Load
Transient Response
n Shutdown Mode Draws Less Than 15μA Supply
Current
n Available in 24-Pin (4mm
× 4mm) QFN Package
n Point of Load Power Supply
n Portable Instruments
n Distributed Power Systems
n Battery-Powered Equipment
PVIN
RT
LTC3605
CLKOUT
CLKIN
PGOOD
RUN
INTVCC
BOOST
SW
FB
SVIN
2.2μF
VIN
47μF
2
3605 TA01a
VOUT
3.3V
0.1μF
220pF
11.5k
2.55k
16k
162k
1μH
22μF
2
VIN
4V TO 15V
ITH
VON
PGND
Efciency and Power Loss
OUTPUT CURRENT (mA)
10
40
EFFICIENCY
(%)
POWER
LOSS
(W)
50
60
70
80
100
1000
10000
3605 TA01b
30
20
10
0
90
100
1
0
0.1
10
VIN = 12V
f = 1MHz
VOUT = 3.3V
VOUT = 1.2V
L, LT, LTC, LTM, PolyPhase, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589,
6774611.
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| LTC3606BEDD#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN DC/DC CONVERTER DFN8 |
| LTC3606BEDD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 0.8A 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 輸出數: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: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) 供應商設備封裝:8-SOIC |
| LTC3606BIDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.8A 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數: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 - 開關:- 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) 供應商設備封裝:10-MSOP 裸露焊盤 |
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