- 您现在的位置：买卖IC网 > PDF目录19825 > LTM4602EV#PBF (Linear Technology)IC DC/DC UMODULE 6A 104-LGA PDF资料下载
参数资料
| 型号： | LTM4602EV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/24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
Enable
The RUN/SS pin can be driven from logic as shown in
Figure 5. This function allows the LTM4602 to be turned
on or off remotely. The ON signal can also control the
sequence of the output voltage.
RUN/SS
EXTV CC Connection
An internal low dropout regulator produces an internal 5V
supply that powers the control circuitry and FET drivers.
Therefore, if the system does not have a 5V power rail,
the LTM4602 can be directly powered by V IN . The gate
driver current through LDO is about 18mA. The internal
LDO power dissipation can be calculated as:
ON
2N7002
LTM4602
PGND SGND
4602 F05
P LDO_LOSS = 18mA ? (V IN – 5V)
The LTM4602 also provides an external gate driver volt-
age pin EXTV CC . If there is a 5V rail in the system, it is
recommended to connect EXTV CC pin to the external 5V
Figure 5. Enable Circuit with External Logic
Output Voltage Tracking
For the applications that require output voltage tracking,
several LTM4602 modules can be programmed by the
power supply tracking controller such as the LTC2923.
Figure 6 shows a typical schematic with LTC2923. Coin-
cident, ratiometric and offset tracking for V OUT rising and
falling can be implemented with different sets of resistor
values. See the LTC2923 data sheet for more details.
rail. Whenever the EXTV CC pin is above 4.7V, the inter-
nal 5V LDO is shut off and an internal 50mA P-channel
switch connects the EXTV CC to internal 5V. Internal 5V is
supplied from EXTV CC until this pin drops below 4.5V. Do
not apply more than 6V to the EXTV CC pin and ensure that
EXTV CC < V IN . The following list summaries the possible
connections for EXTV CC :
1. EXTV CC grounded. Internal 5V LDO is always powered
from the internal 5V regulator.
2. EXTV CC connected to an external supply. Internal LDO
is shut off. A high ef?ciency supply compatible with the
MOSFET gate drive requirements (typically 5V) can im-
V IN
5V
DC/DC
Q1
3.3V
prove overall ef?ciency. With this connection, it is always
required that the EXTV CC voltage can not be higher than
V IN
V IN pin voltage.
R ONB
V CC
GATE
RAMP
V IN
LTM4602
Discontinuous Operation and FCB Pin
R ONA
ON
LTC2923
FB1
R SET
49.9k
V OSET
V OUT
1.8V
The FCB pin determines whether the internal bottom
MOSFET remains on when the inductor current reverses.
R TB1
R TA1
R TB2
RAMPBUF
TRACK1
TRACK2
STATUS
SDO
FB2
V IN
V IN
LTM4602
V OSET V OUT
1.5V
There is an internal 4.75k pull-down resistor connecting
this pin to ground. The default light load operation mode
is forced continuous (PWM) current mode. This mode
provides minimum output voltage ripple.
R TA2
GND
R SET
66.5k
4602 F06
In the application where the light load ef?ciency is im-
portant, tying the FCB pin above 0.6V threshold enables
discontinuous operation where the bottom MOSFET turns
Figure 6. Output Voltage Tracking with the LTC2923 Controller
off when inductor current reverses. Therefore, the conduc-
4602fa
13
相关PDF资料 |
PDF描述 |
|---|---|
| TBJE156K050LBSB0H24 | CAP TANT 15UF 50V 10% 2917 |
| VE-24X-EV-F3 | CONVERTER MOD DC/DC 5.2V 150W |
| TAP107K020CCS | CAP TANT 100UF 20V 10% RADIAL |
| MAX8516EUB/V+ | IC REG LDO ADJ 1A 10UMAX |
| GCM21A7U2E102JX01D | CAP CER 1000PF 250V 5% U2J 0805 |
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 |
发布紧急采购，3分钟左右您将得到回复。