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参数资料
| 型号： | MAX15035ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/27页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 15A 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.05V，1.5V |
| 输入电压： | 4.5 V ~ 26 V |
| PWM 型： | 电流模式 |
| 电流 - 输出： | 15A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
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15A Step-Down Regulator with Internal Switches
5V BIAS
SUPPLY
C1
4
V DD
TON
29
R TON
200k Ω
C2
1 μ F
PWR
IN
BST
18–26, EP3
30
C IN
INPUT
7V TO 24V
AGND
1 μ F
R10
37
V CC
LX
5, 16, EP2
C BST
0.1 μ F
L1
PWR
OUTPUT
1.50V 10A
1.05V 7A
100k Ω
38
PGOOD
PGND
6–15
PWR
C OUT
PWR
ON OFF
GND/OPEN/REF/V DD
2
36
EN MAX15035
SKIP
FB
32
C3
AGND
1000pF
R1
35
REF
R8
100k Ω
AGND
R3
97.6k Ω
49.9k Ω
R2
54.9k Ω
34
REFIN
AGND
ILIM
33
R5
R4
49.9k Ω
REF
3, 28, EP1
49.4k Ω
LO
HI
AGND
AGND
PWR AGND
SEE TABLE 1 FOR COMPONENT SELECTION.
Figure 8. Standard Application with Foldback Current-Limit Protection
( R ESR PCB ) ≤ Δ I
+ R
Foldback Current Limit
Including an additional resistor between ILIM and the
output automatically creates a current-limit threshold that
folds back as the output voltage drops (see Figure 8).
The foldback current limit helps limit the inductor current
under fault conditions, but must be carefully designed to
provide reliable performance under normal conditions.
The current-limit threshold must not be set too low, or the
controller will not reliably power up. To ensure the con-
troller powers up properly, the minimum current-limit
threshold (when V OUT = 0V) must always be greater than
the maximum load during startup (which at least consists
of leakage currents), plus the maximum current required
to charge the output capacitors:
I START = C OUT x 1mV/μs + I LOAD(START)
In core and chipset converters and other applications
where the output is subject to large-load transients, the
output capacitor’s size typically depends on how much
ESR is needed to prevent the output from dipping too
low under a load transient. Ignoring the sag due to
finite capacitance:
V STEP
LOAD ( MAX )
In low-power applications, the output capacitor’s size
often depends on how much ESR is needed to maintain
an acceptable level of output ripple voltage. The output
ripple voltage of a step-down controller equals the total
inductor ripple current multiplied by the output capaci-
tor’s ESR. The maximum ESR to meet ripple require-
? ? ( V IN ? V OUT ) V OUT ? ?
Output Capacitor Selection
The output filter capacitor must have low enough equiv-
alent series resistance (ESR) to meet output ripple and
load-transient requirements. Additionally, the ESR
ments is:
? V IN × f SW × L ?
R ESR ≤ ? ? V RIPPLE
impacts stability requirements. Capacitors with a high
ESR value (polymers/tantalums) do not need additional
external compensation components.
where f SW is the switching frequency.
______________________________________________________________________________________
21
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相关代理商/技术参数 |
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|---|---|
| MAX15035EVKIT+ | 功能描述:电源管理IC开发工具 MAX15035 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX15036ATE/V+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15036ATE/V+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15036ATE+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15036ATE+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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