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| 型号： | LTM4602EV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC DC/DC UMODULE 6A 104-LGA |
| 产品培训模块： | Power Module vs. Discrete DC to DC |
| 软件下载： | LTM4602 Spice Models |
| 产品目录绘图： | LTM Series_15x15x2.8 |
| 设计资源： | LTM4602EV#PBF Footprint.bxl |
| 特色产品： | μModule Products |
| 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）： | 20V |
| Voltage - Output 1： | 0.6 ~ 5 V |
| 电流 - 输出（最大）： | 6A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 104-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： | 92% |
| 产品目录页面： | 2711 (CN2011-ZH PDF) |
LTM4602
APPLICATIONS INFORMATION
Output Capacitors
The LTM4602 is designed for low output voltage ripple. The
bulk output capacitors C OUT is chosen with low enough
effective series resistance (ESR) to meet the output voltage
ripple and transient requirements. C OUT can be low ESR
tantalum capacitor, low ESR polymer capacitor or ceramic
capacitor (X5R or X7R). The typical capacitance is 200μF
if all ceramic output capacitors are used. The internally
optimized loop compensation provides suf?cient stability
margin for all ceramic capacitors applications. Additional
Soft-Start and Latchoff with the RUN/SS pin
The RUN/SS pin provides a means to shut down the
LTM4602 as well as a timer for soft-start and overcurrent
latchoff. Pulling the RUN/SS pin below 0.8V puts the
LTM4602 into a low quiescent current shutdown (I Q ≤
100μA). Releasing the pin allows an internal 1.2μA cur-
rent source to charge up the timing capacitor C SS . Inside
LTM4602, there is an internal 1000pF capacitor from RUN/
SS pin to ground. If RUN/SS pin has an external capacitor
C SS_EXT to ground, the delay before starting is about:
output ?ltering may be required by the system designer,
if further reduction of output ripple or dynamic transient
spike is required. Refer to Table 2 for an output capaci-
t DELAY =
1.5V
1.2 μ A
? (C SS_EXT + 1000pF)
tance matrix for each output voltage droop, peak to peak
deviation and recovery time during a 3A/μs transient with
a speci?c output capacitance.
Fault Conditions: Current Limit and Overcurrent
Foldback
The LTM4602 has a current mode controller, which inher-
ently limits the cycle-by-cycle inductor current not only in
steady-state operation, but also in transient.
To further limit current in the event of an over load condi-
tion, the LTM4602 provides foldback current limiting. If the
output voltage falls by more than 50%, then the maximum
output current is progressively lowered to about one sixth
of its full current limit value.
When the voltage on RUN/SS pin reaches 1.5V, the LTM4602
internal switches are operating with a clamping of the
maximum output inductor current limited by the RUN/SS
pin total soft-start capacitance. As the RUN/SS pin voltage
rises to 3V, the soft-start clamping of the inductor current
is released.
V IN to V OUT Step-Down Ratios
There are restrictions in the maximum V IN to V OUT step
down ratio that can be achieved for a given input voltage.
These constraints are shown in the Typical Performance
Characteristics curves labeled “V IN to V OUT Step-Down
Ratio”. Note that additional thermal derating may apply. See
the Thermal Considerations and Output Current Derating
sections of this data sheet.
4602fa
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM4602HV | 制造商:LINER 制造商全称:Linear Technology 功能描述:6A, 28VIN High Effi ciency DC/DC μModule |
| LTM4602HVEV#PBF | 功能描述:IC DC/DC UMODULE 6A 104-LGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:66V 电压 - 输入（最大）:160V Voltage - Output 1:12V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:50W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM4602HVEV#PBF | 制造商:Linear Technology 功能描述:DC/DC Converter IC 制造商:Linear Technology 功能描述:IC, STEP-DOWN DC/DC MODULE, LGA-104 |
| LTM4602HVEVPBF | 制造商:Linear Technology 功能描述:6A DC/DC uModule LTM4602 |
| LTM4602HVEV-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6A, 28VIN High Effi ciency DC/DC μModule |
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