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参数资料
| 型号： | LTC3611IWP#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 10A 64QFN |
| 标准包装： | 2,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 32 V |
| 输入电压： | 4.5 V ~ 32 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 10A |
| 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： | 64-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 64-QFN（9x9） |
LTC3611
10A Output Current
Wide V IN Range = 4.5V to 32V (36V Maximum)
Internal N-Channel MOSFETs
True Current Mode Control
Optimized for High Step-Down Ratios
t 0N(MIN) ≤ 100ns
Extremely Fast Transient Response
Stable with Ceramic C OUT
±1% 0.6V Voltage Reference
Power Good Output Voltage Monitor
Adjustable On-Time/Switching Frequency (>1MHz)
Adjustable Current Limit
Programmable Soft-Start
Output Overvoltage Protection
Optional Short-Circuit Shutdown Timer
Low Shutdown I Q : 15μA
Available in a 9mm × 9mm 64-Pin QFN Package
Point of Load Regulation
Distributed Power Systems
FEATURES
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APPLICATIONS
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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.
Patents including 5481178, 6100678, 6580258, 5847554, 6304066.
TYPICAL APPLICATION
10A, 32V Monolithic
Synchronous Step-Down
DC/DC Converter
DESCRIPTION
The LTC ? 3611 is a high ef ?ciency, monolithic synchronous
step-down DC/DC converter that can deliver up to 10A
output current from a 4.5V to 32V (36V maximum) input
supply. It uses a constant on-time valley current mode
control architecture to deliver very low duty cycle opera-
tion 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 LTC3611 can be con?gured for discontinuous or
forced continuous operation at light load. Forced continu-
ous operation reduces noise and RF interference while
discontinuous mode provides high ef ?ciency 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 LTC3611 is available in a
compact 9mm × 9mm QFN package.
LTC3611
0.22μF
High Ef ?ciency Step-Down Converter
182k
0.1μF V OUT V ON I ON
RUN/SS V IN
100pF
1μH
SW
680pF
I TH BOOST
12.5k
10μF
×3
100μF
×2
V IN
4.5V TO 32V
V OUT
2.5V
10A
100
90
80
70
60
50
40
Ef ?ciency and Power Loss
vs Load Current
V OUT = 2.5V
V IN = 5V
V IN = 25V
POWER LOSS,
V IN = 5V
10000
1000
100
INTV CC
39.2k
11k
SGND
V RNG
PGOOD
EXTV CC
INTV CC
FCB
PGND
V FB
4.7μF
30.1k
30
20
10
0
0.01
POWER LOSS,
V IN = 25V
0.1 1
LOAD CURRENT (A)
10
10
1
3611 TA01a
9.5k
3611 TA01b
3611fd
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相关代理商/技术参数 |
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| LTC3612EFE#PBF | 功能描述:IC REG BUCK SYNC ADJ 3A 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3612EFE#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 3A 20TSSOP 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LTC3612EUDC#PBF | 功能描述:IC REG BUCK SYNC ADJ 3A 20QFN 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 |
| LTC3612EUDC#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 3A 20QFN 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LTC3612EUDCPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 5.5V QFN20EP |
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