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参数资料
| 型号： | MAX8855ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 5A DL 32TQFN |
| 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： | 2 |
| 输出电压： | 0.6 V ~ 3.24 V |
| 输入电压： | 2.35 V ~ 3.6 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 1MHz ~ 2MHz |
| 电流 - 输出： | 5A |
| 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： | 32-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
Dual, 5A, 2MHz Step-Down Regulators
reference with soft-start time set independently by the
SS1 capacitor (see Figure 3a).
For ratiometric tracking applications, connect REFIN to
the center of a voltage-divider from the output of regula-
tor 2 to GND (see Figure 3b). In this application, the EN_
inputs are connected to each other and driven as a sin-
gle enable input. Regulator 2 starts up with a normal soft-
start (C SS2 sets the time), and regulator 1 output
ratiometrically tracks the regulator 2 output voltage. The
voltage-divider resistors set the V OUT1 /V OUT2 ratio (see
the Setting the Output Voltage section). In Figure 3b,
V OUT1 regulates to half of V OUT2 . Note that a capaci-
tance of 1000pF should be connected to SS1 for stability.
Figure 3c shows the output sequencing application
using an external reference.
EN
OUT2
10k Ω
PWRGD1
V DD
EN1
EN2
EN
OUT1
10k Ω
PWRGD2
PWRGD1
PWRGD2
SS1
OUT2
SS2
REFIN
10k Ω
10k Ω
Figure 3b. Startup and Sequencing Options—Ratiometric Tracking Startup and Shutdown Waveforms V OUT1 Track V OUT2
EN1
PWRGD1
EN1
OUT1
PWRGD1
10k Ω
10k Ω
V DD
EN2
EN1
SS2
PWRGD2
OUT2
SS1
REFIN
REFIN
PWRGD2
Figure 3c. Startup and Sequencing Options—Sequencing Startup and Shutdown Waveforms with External Reference
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