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参数资料
| 型号： | MAX8655ETN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/23页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 25A 56TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 37 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 5.5 V |
| 输入电压： | 4.5 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 1MHz |
| 电流 - 输出： | 25A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 56-TQFN-EP（8x8） |
Highly Integrated, 25A, Wide-Input,
Internal MOSFET, Step-Down Regulator
R12
80.6k ?
R3
2.87k ?
C8
0.47 μ F
C12
R2
AVL
C13
R10 0.022 μ F
51.1k ?
AVL
470pF
R7
40.2k ?
R5
4.02k ?
R9
56.2k ?
357 ?
C10
100pF
R13
100k ?
POWER-OK OUTPUT
FSYNC INPUT
R8
POK
FSYNC
GND
AVL
C14
1 μ F
ENABLE
FOR INTERNAL
OSCILLATOR
OPERATION ONLY
41.2k ?
MODE
EN
INPUT
OFF
ON
SYNC OUTPUT
VL
D1
SYNCO
BST
IN
VL
PVIN
C16
0.22 μ F
C9
0.47 μ F
C15
0.22 μ F
GND
N.C.
MAX8655
GND
VLGND
C18
2.2 μ F
R1
681 ?
OUTPUT 1.2V
UP TO 20A
INPUT
11.8V TO 13.2V
LXB
PVIN
PVIN
LX
LX
LX
L1
0.56 μ H
1.8m ?
C6–C20
4 x 100 μ F
C1–C3
3 x 10 μ F
PVIN
LX
CERAMIC
CERAMIC
PVIN
PVIN
PVIN
Figure 3. Single-Phase, 600kHz Switching, 10.8V to 13.2V Input, and 1.2V/20A Output
LX
LX
PGND
REFIN
The MAX8655 has a reference input (REFIN). When an
external reference up to 1.5V is connected to REFIN,
the feedback regulation voltage is equal to the voltage
applied to REFIN.
Connect REFIN to AVL to use the internal 0.7V reference.
Overvoltage Protection
The MAX8655 provides output overvoltage protection
(OVP). The OVP threshold is set independent of the
output regulation voltage with a resistor voltage-divider.
When the voltage at OVP exceeds the OVP threshold,
the regulator stops switching and latches on the low-
side power MOSFET. Cycle EN or the power applied to
AVL to clear the latch.
Power-Good Signal (POK)
POK is an open-drain output on the MAX8655 that mon-
itors the output voltage. When the output is above 92%
of its nominal regulation voltage, POK is high imped-
ance. When the output drops below 89% of its nominal
regulation voltage, POK is internally pulled low. POK is
also internally pulled low when the MAX8655 is shut
down or in a fault condition.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX8655. When the junction temperature
exceeds +160°C, an internal thermal sensor shuts
down the device, allowing the IC to cool. The thermal
sensor turns the IC on again after the junction tempera-
ture cools by 15°C, resulting in a pulsed output during
continuous thermal-overload conditions.
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8655ETN/GG8 | 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 |
| MAX8655ETN+ | 功能描述:直流/直流开关调节器 25A Int MOSFET Step-Down Regulator 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 |
| MAX8655ETN+T | 功能描述:直流/直流开关调节器 25A Int MOSFET Step-Down Regulator 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 |
| MAX8655ETN+TW | 功能描述:直流/直流开关调节器 25A Int MOSFET Step-Down Regulator 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 |
| MAX8655ETN+W | 功能描述:直流/直流开关调节器 25A Int MOSFET Step-Down Regulator 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 |
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