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参数资料
| 型号： | LTC3609EWKG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 6A 52QFN |
| 特色产品： | LTC3609 - 32V, 6A Monolithic Synchronous Step-Down DC/DC Converter |
| 标准包装： | 45 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 36 V |
| 输入电压： | 4 V ~ 32 V |
| PWM 型： | 电流模式 |
| 电流 - 输出： | 6A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 52-VFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 52-QFN（7x8）裸露焊盘 |
| 产品目录页面： | 1335 (CN2011-ZH PDF) |
LTC3609
32V, 6A Monolithic
Synchronous Step-Down
DC/DC Converter
6A Output Current
Power Good Output Voltage Monitor
Adjustable On-Time/Switching Frequency
Adjustable Current Limit
Programmable Soft-Start
Output Overvoltage Protection
Optional Short-Circuit Shutdown Timer
Low Shutdown I Q : 15μA
Available in a 7mm × 8mm 52-Pin QFN Package
Point of Load Regulation
Distributed Power Systems
FEATURES
n
n Wide V IN Range = 4V to 32V (36V Maximum)
n Internal N-Channel MOSFETs
n True Current Mode Control
n Optimized for High Step-Down Ratios
n t ON(MIN) ≤ 100ns
n Extremely Fast Transient Response
n Stable with Ceramic C OUT
n ±1% 0.6V Voltage Reference
n
n
n
n
n
n
n
n
APPLICATIONS
n
n
L , LT, LTC, LTM, 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, 6100678, 6580258, 5847554, 6304066.
TYPICAL APPLICATION
DESCRIPTION
The LTC ? 3609 is a high efficiency, monolithic synchronous
step-down DC/DC converter that can deliver up to 6A output
current from a 4V to 32V (36V maximum) input supply. It
uses a valley current control architecture to deliver very
low duty cycle operation at high frequency with excellent
transient response. The operating frequency is selected
by an external resistor and is compensated for variations
in V IN and V OUT .
The LTC3609 can be configured for discontinuous or
forced continuous operation at light load. Forced continu-
ous operation reduces noise and RF interference while
discontinuous mode provides high efficiency by reducing
switching losses at light loads.
Fault protection is provided by internal foldback current
limiting, an output overvoltage comparator and an optional
short-circuit shutdown timer. Soft-start capability for sup-
ply sequencing is accomplished using an external timing
capacitor. The regulator current limit is user programmable.
A power good output voltage monitor indicates when
the output is in regulation. The LTC3609 is available in a
compact 7mm × 8mm QFN package.
High Efficiency Step-Down Converter
187k
0.1μF V OUT V ON I ON
100
Efficiency and Power Loss
vs Load Current
10000
1000pF
100pF
15.8k
RUN/SS V IN
LTC3609
I TH BOOST
SW
1.2μH
0.22μF
10μF
x3
100μF
x2
V IN
4V TO 32V
V OUT
2.5V
6A
90
80
70
60
50
40
EFFICIENCY
POWER LOSS
1000
100
SGND
INTV CC
FCB
30.1k
30
20
10
EXTV CC = 5V
V RNG
PGOOD
EXTV CC
PGND
V FB
3609 TA01a
4.7μF
9.53k
10 V OUT = 2.5V
0
0.01 0.1 1
LOAD CURRENT (A)
V IN = 12V
V IN = 25V
1
10
3609 TA 01b
3609fb
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| LTC3610EWP#PBF | 功能描述:IC REG BUCK SYNC ADJ 12A 64QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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| LTC3610EWPPBF | 制造商:Linear Technology 功能描述:12A 24V Synch Step Down Reg LTC3610 |
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