- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30774 > LTM4600IV (LINEAR TECHNOLOGY CORP) 17 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, BGA104 PDF資料下載
參數(shù)資料
| 型號： | LTM4600IV |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 17 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, BGA104 |
| 封裝： | 15 X 15 MM, 2.8 MM HEIGHT, ROHS COMPLIANT, MO-222, LGA-104 |
| 文件頁數(shù)： | 24/24頁 |
| 文件大小： | 351K |
| 代理商： | LTM4600IV |
PRERELEASE
LTM4600
9
4600p
APPLICATIO S I FOR ATIO
WU
U
down when QDOWN is on and QUP is off. If the output
voltage VO needs to be margined up/down by ±M%, the
resistor values of RUP and RDOWN can be calculated from
the following equations:
()
(
%)
()
.
RR
V
M
RR
k
V
SET
UP
O
SET
UP
1
100
06
+
=
RV
M
Rk
R
V
SET
O
SET
DOWN
( – %)
()
.
1
100
06
+
=
Input Capacitors
The LTM4600 Module should be connected to a low
ac-impedance AC source. High frequency, low ESR input
capacitors are required to be placed adjacent to the mod-
ule. In Figure 20, the bulk input capacitor CIN is selected
for its ability to handle the large RMS current into the
converter. For a buck converter, the switching duty-cycle
can be estimated as:
D
V
O
IN
=
Without considering the inductor current ripple, the RMS
current of the input capacitor can be estimated as:
I
DD
CIN RMS
OMAX
()
%
(
)
=
η
1
In the above equation, η% is the estimated efciency of
the power module. C1 can be a switcher-rated electrolytic
aluminum capacitor, OS-CON capacitor or high volume
ceramic capacitors. Note the capacitor ripple current
ratings are often based on only 2000 hours of life. This
makes it advisable to properly derate the input capacitor,
or choose a capacitor rated at a higher temperature than
required. Always contact the capacitor manufacturer for
derating requirements.
In Figure 16, the input capacitors are used as high fre-
quency input decoupling capacitors. In a typical 10A
output application, 1-2 pieces of very low ESR X5R or
X7R, 10F ceramic capacitors are recommended. This
decoupling capacitor should be placed directly adjacent
The typical LTM4600 application circuit is shown in Figure
20. External component selection is primarily determined
by the maximum load current and output voltage.
Output Voltage Programming and Margining
The PWM controller of the LTM4600 has an internal
0.6V±1% reference voltage. As shown in the block diagram,
a 100k/0.5% internal feedback resistor connects VOUT and
FB pins. Adding a resistor RSET from VOSET pin to SGND
pin programs the output voltage:
VV
kR
R
O
SET
=
+
06
100
.
Table 1 shows the standard vaules of 1% RSET resistor
for typical output voltages:
Table 1.
RSET
(kΩ)
Open
100
66.5
49.9
43.2
31.6
22.1
13.7
VO
(V)
0.6
1.2
1.5
1.8
2
2.5
3.3
5
Voltage margining is the dynamic adjustment of the output
voltage to its worst case operating range in production
testing to stress the load circuitry, verify control/protec-
tion functionality of the board and improve the system
reliability. Figure 2 shows how to implement margining
function with the LTM4600. In addition to the feedback
resistor RSET, several external components are added.
Turn off both transistor QUP and QDOWN to disable the
margining. When QUP is on and QDOWN is off, the output
voltage is margined up. The output voltage is margined
Figure 2.
PGND
SGND
4600 F02
LTM4600
VOUT
VOSET
RSET
RUP
QUP
100k
2N7002
RDOWN
QDOWN
2N7002
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTM4612MPV#PBF | SWITCHING CONTROLLER, 940 kHz SWITCHING FREQ-MAX, PBGA133 |
| LTM4612IV#PBF | SWITCHING CONTROLLER, 940 kHz SWITCHING FREQ-MAX, PBGA133 |
| LTS15D10C-01 | SPECIALTY ANALOG CIRCUIT, XSS |
| LTS15A10C-01 | SPECIALTY ANALOG CIRCUIT, XSS |
| LU59002 | INFRARED, RECEIVER IC, PDIP20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTM4600IV#2DHPBF | 制造商:Linear Technology 功能描述:DC to DC Converter and Switching Regulator Chip |
| LTM4600IV#PBF | 功能描述:IC DC/DC UMODULE 10A 104-LGA RoHS:是 類別:電源 - 板載 >> DC DC Converters 系列:µModule® 設(shè)計(jì)資源:VI-200, VI-J00 Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:* 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?66V 電壓 - 輸入（最大）:160V Voltage - Output 1:12V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:50W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼: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） 包裝:散裝 工作溫度:-25°C ~ 85°C 效率:* 電源（瓦特）- 最大:* |
| LTM4600IVPBF | 制造商:Linear Technology 功能描述:DC/DC Regulator 10A 0.6-5Vout 20Vin |
| LTM4601 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low VIN, 8A DC/DC μModule Regulator |
| LTM4601/ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low VIN, 8A DC/DC ??Module Regulator |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。