- 您现在的位置：买卖IC网 > Datasheet目录868 > LTM4607IV#PBF (Linear Technology)IC BUCK/BOOST SYNC ADJ 5A 141LGA Datasheet资料下载
参数资料
| 型号： | LTM4607IV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/26页 |
| 文件大小： | 0K |
| 描述： | IC BUCK/BOOST SYNC ADJ 5A 141LGA |
| 产品培训模块： | Buck-Boost uModule Regulators High Voltage µModule DC/DC Regulators Power Module vs. Discrete DC to DC |
| 软件下载： | LTM460(5,7) Spice Models LTM4607 Spice Model |
| 产品目录绘图： | LTM Series_15x15x2.8 |
| 设计资源： | LTM4607IV#PBF Footprint.bxl |
| 特色产品： | μModule Products DC/DC μModule Regulator Family |
| 标准包装： | 119 |
| 系列： | µModule® |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 4.5V |
| 电压 - 输入（最大）： | 36V |
| Voltage - Output 1： | 0.8 ~ 24 V |
| 电流 - 输出（最大）： | 5A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 141-LGA |
| 尺寸/尺寸： | 0.59" L x 0.59" W x 0.11" H（15.0mm x 15.0mm x 2.8mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 98% |
| 产品目录页面： | 2711 (CN2011-ZH PDF) |
| 配用： | DC1198A-B-ND - BOARD DEMO LTM4607 |
LTM4607
APPLICATIONS INFORMATION
V IN ? ( V OUT(MAX) ? V IN )
V OUT(MAX) ? ? ? I OUT(MAX) ? Ripple%
orchooseacapacitorratedatahighertemperaturethan
required. Always contact the capacitor manufacturer for
derating requirements.
Output Capacitors
inductor current. In the inductor design, the worst cases
in continuous mode are considered as follows:
L BOOST ≥
In boost mode, the discontinuous current shifts from the
input to the output, so the output capacitor C OUT must be
capable of reducing the output voltage ripple.
For boost and buck modes, the steady ripple due to charg-
ing and discharging the bulk capacitance is given by:
L BUCK ≥
where:
V OUT ? ( V IN(MAX) ? V OUT )
V IN(MAX) ? ? ? I OUT(MAX) ? Ripple%
V RIPPLE,BOOST =
I OUT(MAX) ? ( V OUT ? V IN(MIN) )
C OUT ? V OUT ? ?
? is operating frequency, Hz
Ripple% is allowable inductor current ripple, %
V RIPPLE,BUCK =
V OUT ? ( V IN(MAX) ? V OUT )
8 ? L ? C OUT ? V IN(MAX) ? ? 2
V OUT(MAX) is maximum output voltage, V
V IN(MAX) is maximum input voltage, V
V OUT is output voltage, V
I OUT(MAX,BOOST) = ?
? ?
? 160mV Δ I L ? V IN
? R SENSE
2 ? V OUT
ThesteadyrippleduetothevoltagedropacrosstheESR
(effective series resistance) is given by:
V ESR,BUCK = Δ I L(MAX) ? ESR
V ESR,BOOST = I L(MAX) ? ESR
The LTM4607 is designed for low output voltage ripple.
The bulk output capacitors defined as C OUT are chosen
with low enough ESR to meet the output voltage ripple and
transient requirements. C OUT can be the low ESR tantalum
capacitor, the low ESR polymer capacitor or the ceramic
capacitor. Multiple capacitors can be placed in parallel to
meet the ESR and RMS current handling requirements.
The typical capacitance is 300μF. Additional output filtering
may be required by the system designer, if further reduc-
tion of output ripple or dynamic transient spike is required.
Table 3 shows a matrix of different output voltages and
output capacitors to minimize the voltage droop and
overshoot at a current transient.
Inductor Selection
The inductor is chiefly decided by the required ripple cur-
rent and the operating frequency. The inductor current
ripple Δ I L is typically set to 20% to 40% of the maximum
I OUT(MAX) is maximum output load current, A
The inductor should have low DC resistance to reduce the
I 2 R losses, and must be able to handle the peak inductor
current without saturation. To minimize radiated noise,
use a toroid, pot core or shielded bobbin inductor. Please
refer to Table 3 for the recommended inductors for dif-
ferent cases.
R SENSE Selection and Maximum Output Current
R SENSE is chosen based on the required inductor current.
Since the maximum inductor valley current at buck mode
is much lower than the inductor peak current at boost
mode, different sensing resistors are suggested for use
in buck and boost modes.
The current comparator threshold sets the peak of the
inductor current in boost mode and the maximum inductor
valley current in buck mode. In boost mode, the allowed
maximum average load current is:
?
where Δ I L is peak-to-peak inductor ripple current.
11
For more information www.linear.com/LTM4607
4607fc
相关PDF资料 |
PDF描述 |
|---|---|
| LTM4608AEV#PBF | IC BUCK SYNC ADJ 8A 68LGA |
| LTM4608IV#PBF | IC DC/DC UMODULE 8A 68-LGA |
| LTM4609IV#PBF | IC BUCK/BOOST SYNC ADJ 4A 141LGA |
| LTM4612IV#PBF | IC BUCK SYNC ADJ 5A 133LGA |
| LTM4613MPV#PBF | IC UMODULE DC/DC 8A 133-LGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM4607V | 制造商:LINER 制造商全称:Linear Technology 功能描述:36VIN, 24VOUT High Effi ciency Buck-Boost DC/DC μModule |
| LTM4608 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC μModuleTM with Tracking, Margining, and Frequency Synchronization |
| LTM4608_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC Module Regulator with Tracking, Margining, and Frequency Synchronization |
| LTM4608A | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC μModule with Tracking, Margining, and Frequency Synchronization |
| LTM4608A_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low VIN, 8A DC/DC Module Regulator with Tracking, Margining, and Frequency Synchronization |
发布紧急采购，3分钟左右您将得到回复。