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参数资料
| 型号： | LTM4600HVEV |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 17 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PBGA104 |
| 封装： | 15 X 15 MM, 2.80 MM HEIGHT, ROHS COMPLIANT, MO-222, LGA-104 |
| 文件页数： | 2/24页 |
| 文件大小： | 389K |
| 代理商： | LTM4600HVEV |
PRERELEASE
LTM4600HV
10
4600hvp
APPLICATIO S I FOR ATIO
WU
U
the module input pins in the PCB layout to minimize the
trace inductance and high frequency AC noise.
Output Capacitors
The LTM4600HV is designed for low output voltage ripple.
The bulk output capacitors COUT is chosen with low enough
effective series resistance (ESR) to meet the output voltage
ripple and transient requirements. COUT can be low ESR
tantalum capacitor, low ESR polymer capacitor or ceramic
capacitor. The typical capacitance is 200F if all ceramic
output capacitors are used. The internally optimized loop
compensation provides sufcient stability margin for all
ceramic capacitors applications. Additional output lter-
ing 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 capacitance matrix
for each output voltage Droop, peak to peak deviation and
recovery time during a 5A/s transient with a specic
output capacitance.
Fault Conditions: Current Limit and Over current
Foldback
The LTM4600HV has a current mode controller, which
inherently 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 LTM4600HV 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.
Soft-Start and Latchoff with the RUN/SS pin
The RUN/SS pin provides a means to shut down the
LTM4600HV as well as a timer for soft-start and over-
current latchoff. Pulling the RUN/SS pin below 0.8V puts
the LTM4600HV into a low quiescent current shutdown
(IQ ≤ 40A). Releasing the pin allows an internal 1.2A
current source to charge up the timing capacitor CSS.
Inside LTM4600HV, there is an internal 1000pF capaci-
tor from RUN/SS pin to ground. If RUN/SS pin has an
external capacitor CSS_EXT to ground, the delay before
starting is about:
t
V
A
CpF
DELAY
SS EXT
=
+
15
12
1000
.
(
)
_
When the voltage on RUN/SS pin reaches 1.5V, the
LTM4600HV internal switches are operating with a clamp-
ing 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.
VIN to VOUT Stepdown Ratios
There are restrictions in the maximum VIN to VOUT step
down ratio that can be achieved for a given input voltage.
These contraints are shown in the Typical Performance
Characteristics curves labeled “VIN to VOUT Stepdown
Ratio”. Note that additional thermal de-rating may apply.
See the Thermal Considerations and Output Current De-
Rating sections of this data sheet.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM4600HVEV#PBF | 功能描述:IC DC/DC UMODULE 10A 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:* |
| LTM4600HVEVPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single-Out Step Down |
| LTM4600HVEV-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
| LTM4600HVEV-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
| LTM4600HVIV | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
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