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参数资料
| 型号： | MAX8686ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 25A 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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 ~ 20 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 300kHz ~ 1MHz |
| 电流 - 输出： | 25A |
| 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） |
Single/Multiphase, Step-Down,
DC-DC Converter Delivers Up to 25A Per Phase
Overvoltage Protection
The MAX8686 provides output overvoltage protection
(OVP). The OVP threshold is set at 20% above the set
output voltage. When the overvoltage condition is expe-
rienced, the output is latched to PGND through the low-
side MOSFET. To clear the latch, the EN/SLOPE input
should be pulled logic-low and then reinitialized. The
output starts up in a soft-start mode. To prevent the
overvoltage protection from initializing during power-up,
some consideration should be given to the soft-start
timing to reduce the inrush current. In addition, the
proper compensation network would prevent overshoot
during power-up.
Power-OK (POK) Signal
POK is an open-drain output that monitors the output volt-
age. When the output is above 90% of its nominal regula-
tion voltage, POK goes high impedance. There is a 3%
hysteresis to prevent the POK output from chattering. The
POK indicator can be used for sequencing.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX8686. When the junction temperature
exceeds +160°C, an internal thermal sensor shuts
down the device, allowing it to cool down. The thermal
sensor turns the device on again after the junction tem-
perature cools by 30°C, resulting in a pulsed output
during continuous thermal-overload conditions. See
Figures 2, 3, and 4.
C17
1 μ F
C16
0.22 μ F
R13
10 Ω
C15
0.1 μ F
R12
10 Ω
INPUT
6V TO 20V
R1
10k Ω
LX
C18
0.22 μ F
31
BST
IN
20
C13
10 μ F
C12
10 μ F
C11
10 μ F
POWER-
OK
C3
10nF
R4
GFREQ
C1
330pF
C2
15pF
R2
150k Ω
R3
32
33
34
35
36
POK
FREQ
SS
ILIM
REFIN
U1
MAX8686
IN
IN
N.C.
LX
PGND
19
18
17
16
15
R11
270 Ω
L11
0.56 μ H
C14
1 μ F
C6
220 μ F
OUTPUT
1.2V/25A
C7
220 μ F
115k Ω
200k Ω
37
PHASE/REFO
PGND
14
R5
C4
150pF
C4
2.2nF 5.6k Ω
38
39
40
COMP
RS+
RS-
PGND
PGND
PGND
13
12
11
R14
270 Ω
+
GFREQ
LX
ENABLE
(EN)
R16
162k Ω
Figure 2. Single-Phase Application Circuit Operating at VIN = 12V
14
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8686EVKIT# | 功能描述:电源管理IC开发工具 MAX8686 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 |
| MAX8686EVKIT+ | 功能描述:电源管理IC开发工具 MAX8686 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 |
| MAX8687ETL+ | 制造商:Maxim Integrated Products 功能描述:SINGLE /MULTIPHASE, DC/DC CONVERTER - Rail/Tube |
| MAX8688AHETG+ | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8688AHETG+T | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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