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参数资料
| 型号： | MAX5098AATJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 1A/2A 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），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 0.85 V，4.5 V ~ 28 V |
| 输入电压： | 4.5 V ~ 19 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 200kHz ~ 2.2MHz |
| 电流 - 输出： | 1A，2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°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） |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页当前第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
Dual, 2.2MHz, Automotive Buck or Boost
Converter with 80V Load-Dump Protection
Pin Description (continued)
PIN
16
17
18
19
20
21
22, 23
24, 25
26
27
28
29, 30
31
—
NAME
BYPASS
FSEL_1
COMP1
FB1
EN1
PGOOD1
DRAIN1
SOURCE1
BST1/VDD1
VDRV
CKO
PGND1,
PGND2
BST2/VDD2
EP
FUNCTION
Reference Output Bypass Connection. Bypass to SGND with a 0.22μF or greater ceramic capacitor.
Converter 1 Frequency Select Input. Connect FSEL_1 to V L for normal operation. Connect FSEL_1 to SGND
to reduce converter 1’s switching frequency to 1/2 of converter 2’s switching frequency (converter 1
switching frequency is 1/4 the CKO frequency). Do not leave FSEL_1 unconnected.
Converter 1 Internal Transconductance Amplifier Output. See the Compensation section.
Converter 1 Feedback Input. Connect FB1 to a resistive divider between converter 1’s output and SGND to
adjust the output voltage. To set the output voltage below 0.8V, connect FB1 to a resistive voltage-divider
from BYPASS to regulator 1’s output (Figure 3). See the Setting the Output Voltage section.
Converter 1 Active-High Enable Input. Connect to V L for an always-on operation.
Converter 1 Open-Drain Power-Good Output. PGOOD1 output goes low when converter 1’s output falls
below 92.5% of its set regulation voltage. Use PGOOD1 and EN2 to sequence the converters. Converter 1
starts first.
Converter 1 Internal MOSFET Drain Connection. For buck converter operation, use the MOSFET as a high-
side switch and connect DRAIN1 to the DC-DC converters supply input rail. For boost converter operation,
use the MOSFET as a low-side switch and connect DRAIN1 to the inductor and diode junction (Figure 6).
Converter 1 Internal MOSFET Source Connection. For buck operation, connect SOURCE1 to the switched
side of the inductor. For boost operation, connect SOURCE1 to PGND_ (Figure 6).
Converter 1 Bootstrap Flying-Capacitor Connection. For buck converter operation, connect BST1/VDD1 to a
0.1μF ceramic capacitor and diode according to the Typical Application Circuit . For boost converter
operation, driver bypass capacitor connection. Connect to VDRV and bypass with a 0.1μF ceramic
capacitor to PGND_ (Figure 6).
Low-Side Driver Supply Input. Connect VDRV to V L through an RC filter to bypass switching noise to the
internal V L regulator. For buck converter operation, connect anode terminals of external bootstrap diodes to
VDRV. For boost converter operation, connect VDRV to BST1/VDD1 and BST2/VDD2. Bypass with a
minimum 2.2μF ceramic capacitor to PGND_ (see the Typical Application Circuit ). Do not connect to an
external supply .
Clock Output. CKO is an output with twice the frequency of each converter (FSEL_1 = V L ) and 90° out-of-
phase with respect to converter 1. Connect CKO to the SYNC input of another MAX5098A for a four-phase
converter.
Power Ground. Connect both PGND1 and PGND2 together and to the board power ground plane.
Converter 2 Bootstrap Flying-Capacitor Connection. For buck converter operation, connect BST2/VDD2 to a
0.1μF ceramic capacitor and diode according to the Typical Application Circuit . For boost converter
operation, driver bypass capacitor connection. Connect to VDRV and bypass with a 0.1μF ceramic
capacitor from BST2/VDD2 to PGND_ (Figure 6).
Exposed Pad. Connect EP to SGND. For enhanced thermal dissipation, connect EP to a copper area as
large as possible. Do not use EP as the sole ground connection.
12
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相关代理商/技术参数 |
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|---|---|
| MAX5099 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual, 2.2MHz, Automotive Synchronous Buck Converter with 80V Load-Dump Protection |
| MAX5099ATJ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual, 2.2MHz, Automotive Synchronous Buck Converter with 80V Load-Dump Protection |
| MAX5099ATJ+ | 功能描述:直流/直流开关转换器 Dual 2.2MHz Synch Buck Converter 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 |
| MAX5099ATJ+T | 功能描述:直流/直流开关转换器 Dual 2.2MHz Synch Buck Converter 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 |
| MAX5099EVKIT+ | 功能描述:电源管理IC开发工具 MAX5098A/99 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 |
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