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| 型号： | MAX1831EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 3A 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 1.5V，2.5V，3.3V，可调 |
| 输入电压： | 3 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 3A |
| 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： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP |
3A, 1MHz, Low-Voltage, Step-Down Regulators with
Synchronous Rectification and Internal Switches
L
INPUT
1.5 μ F
OUTPUT
10 ?
C IN
22 μ F,
6.3V X5R
IN
LX
MAX1830 FB
MAX1831
SUMIDA
CDRH-6D28
C OUT
120 μ F, 4V
Panasonic SP
2.2 μ F
470pF
V CC
SHDN
PGND
GND
COMP
FBSEL
MAX1830
MAX1831
TOFF
REF
1 μ F
V OUT = 2.5V, FBSEL =
V OUT = 1.8V, FBSEL =
V OUT = 1.5V, FBSEL =
V CC
REF
FLOATING
V OUT = 2.5V, FBSEL =
V OUT = 3.3V, FBSEL =
V OUT = 1.5V, FBSEL =
V CC
REF
FLOATING
R TOFF
Figure 1. Typical Circuit
FBSEL
FB
DIGITAL
470pF
COMP
REF
G m
FEEDBACK
SELECTION
MAX1830
MAX1831
SOFT-START
CURRENT
SENSE
SKIP
IN
C IN
CERAMIC
V IN
3.0V TO 5.5V
V IN
10 ?
V CC
REF
PWM LOGIC
AND
2.2 μ F
SUMMING
COMPARATOR
DRIVERS
LX
V OUT
SHDN
C OUT
1 μ F
REF
REF
GND
TIMER
TOFF
CURRENT
SENSE
PGND
R TOFF
NOTE: HEAVY LINES DENOTE HIGH-CURRENT PATHS.
Figure 2. Functional Diagram
lation comparator turns the PMOS switch on at the end
of each off-time, keeping the device in continuous-con-
duction mode. The PMOS switch remains on until the
output is in regulation or the current limit is reached.
When the PMOS switch turns off, it remains off for the
programmed off-time (t OFF ). To control the current
under short-circuit conditions, the PMOS switch
remains off for approximately 4 x t OFF when V OUT <
V OUT(NOM) / 4.
Idle Mode
Under light loads, the devices improve efficiency by
switching to a pulse-skipping Idle Mode. Idle Mode
operation occurs when the current through the PMOS
switch is less than the Idle Mode threshold current. Idle
Mode forces the PMOS to remain on until the current
through the switch reaches the Idle Mode threshold,
thus minimizing the unnecessary switching that
degrades efficiency under light loads. In Idle Mode, the
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1831EEE+ | 功能描述:直流/直流开关调节器 3A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1831EEE+T | 功能描述:直流/直流开关调节器 3A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1831EEE-T | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1832EUT | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY STEP-UP CONVERTER - Rail/Tube |
| MAX1832EUT#G16 | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY STEP-UP CONVERTERS WITH REVERSE BATTERY PROT - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
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