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参数资料
| 型号： | LT8582IDKD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 21/36页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ 3A 24DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压），反相，回扫，Sepic |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 最高 42V |
| 输入电压： | 2.5 V ~ 22 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 2.5MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 24-DFN（7x4） |
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LT8582
APPLICATIONS INFORMATION
is close to its regulation voltage. This method allows the
PG pin to disable multiple ICs. Refer to Figure 10 for the
necessary connections. Alternatively, the PG pin may be
used to pull the SS pin of another switching regulator low,
preventing the other regulator from switching.
? The master switch, immune from the flying capaci-
tor current spike (seen only by the slave switch), can
therefore sense the inductor current more accurately.
? Since the slave switch can sustain large current spikes,
the diodes that feed current into the flying capacitors do
not need current limiting resistors, leading to efficiency
V IN
CH1
MASTER
SHDN1
LT8582
PG1
CH2
SLAVE
SHDN2
and thermal improvements, as well as a smaller solution
size.
High V OUT Charge Pump Topology
R UVLO1
R UVLO2
The LT8582 can be used in a charge pump topology as
SHDN SYS
10k
8582 F10
SET R UVLO1 AND R UVLO2 SUCH THAT
VIN1 UVLO < VIN2 UVLO
SEE CONFIGURABLE UNDERVOLTAGE LOCKOUT
SECTION FOR DETAILS
shown in Figure 11, multiplying the output of a boost
converter. The master switch (SWA) can be used to drive
the boost converter, while the slave switch (SWB) can
be used to drive one or more charge pump stages. This
topology is useful for high voltage applications including
VFD bias supplies.
Figure 10. Using the Two LT8582 Channels, with Power
Supply Sequencing
V OUT1
100V
80mA
2.2μF
CHARGE PUMP AIDED REGULATORS
Designing charge pumps with the LT8582 can offer efficient
solutions with fewer components than traditional circuits
because of the master/slave switch configuration on the
2.2μF
2.2μF
V OUT2
66V
120mA
2.2μF
IC. Although the slave switch, SWB, operates in phase
with the master switch, SWA, only the current through the
master switch (SWA) is sensed by the current comparator
V IN
9V TO 16V
22μH
2.2μF
8.06k
(A4 in the Block Diagram). This method of operation by
the master/slave switches can offer the following benefits
to charge pump designs:
? The slave switch, by not performing a current sense
operation like the master switch, can sustain fairly
large current spikes without falsely tripping the current
comparator. In a charge pump, these spikes occur when
576k
100k
4.7μF
80.6K
SWA SWB
V IN LT8582 FBX
CHx
SHDN GATE
PG CLKOUT
SYNC GND SS
RT V C
2.2μF
383k
47pF
21k
1.5nF
8582 F11
2.2μF
the flying capacitors charge up. Since this current spike
flows through SWB, it does not affect the operation of
the current comparator (A4 in the Block Diagram).
Figure 11. High V OUT Charge Pump Topology
8582f
21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT8584IFE#PBF | 制造商:Linear Technology 功能描述:IC BATT CELL BALANCE 16TSSOP 制造商:Linear Technology 功能描述:BATTERY BALANCER, 2.5V-5.3V, TSSOP-16, Supply Voltage Min:2.5V, Supply Voltage M |
| LT8610 | 制造商:LINER 制造商全称:Linear Technology 功能描述:42V, 2.5A Synchronous Step-Down Regulator |
| LT8610ABEMSE#PBF | 制造商:Linear Technology 功能描述:SWITCHING REG, BUCK, ADJ, 2.2MHZ, MSOP16, Primary Input Voltage:42V, No. of Outp |
| LT8610AEMSE#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 2.5A 16MSOP 制造商:Linear Technology 功能描述:SWITCHING REG, BUCK, ADJ, 2.2MHZ, MSOP16, Primary Input Voltage:42V, No. of Outp |
| LT8610AHMSE#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 2.5A 16MSOP 制造商:Linear Technology 功能描述:SWITCHING REG, BUCK, ADJ, 2.2MHZ, MSOP16 制造商:Linear Technology 功能描述:SWITCHING REG, BUCK, ADJ, 2.2MHZ, MSOP16, Primary Input Voltage:42V, No. of Outp |
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