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参数资料
| 型号： | MAX1937EEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM HYBRID 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 混合物 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 50% |
| 电源电压： | 6 V ~ 24 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 85°C |
| 封装/外壳： | 28-QSOP |
| 包装： | 管件 |
Two-Phase Desktop CPU Core Supply
Controllers with Controlled VID Change
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
NAME
VID0
VID1
TIME
VID2
VID3
VID4
VPOS
V DD
ILIM
GND
GNDS
REF
EN
FB
PWRGD
BST2
DH2
LX2
CS2
DL2
PGND
FUNCTION
Voltage Identification Input Bit 0. See Table 1. Internal 100k Ω pullup resistor to V DD .
Voltage Identification Input Bit 1. See Table 1. Internal 100k Ω pullup resistor to V DD .
Connect to an external resistor (47k Ω to 470k Ω ) for VID change slew-rate control.
Voltage Identification Input Bit 2. See Table 1. Internal 100k Ω pullup resistor to V DD .
Voltage Identification Input Bit 3. See Table 1. Internal 100k Ω pullup resistor to V DD .
Voltage Identification Input Bit 4. See Table 1. Internal 100k Ω pullup resistor to V DD .
Voltage Positioning. Connect a resistor between VPOS and REF to set the output voltage-positioning
droop, or connect directly to REF for no output voltage positioning. Connect a 47pF capacitor from
VPOS to GND.
IC Analog Power-Supply Input. Connect a 5V supply to V DD .
Current-Limit Threshold per Phase. Connect ILIM to V DD to set a default current limit of 120mV, or
connect to a voltage-divider from REF to GND to adjust the current limit. See the Setting the Current
Limit section.
Ground
Remote Ground Sense. Connect GNDS to the output ground at the load. For VRM applications, also
connect a 100 Ω resistor from GNDS to PGND locally.
Reference Output. Connect a 0.1μF capacitor from REF to GND.
Enable Input. Leave unconnected or drive high for normal operation. Drive low for shutdown.
Remote Feedback Sense. Connect FB to the output at the load. For VRM applications, also connect
a 100 Ω resistor from FB to the output locally.
Power-Good Output. Open-drain output is high impedance when the output is in regulation and
pulled low when the output deviates more than 12.5% from the voltage set by the VID code. PWRGD
is also low in shutdown or during any fault condition. To use as a logic output, connect a pullup
resistor from PWRGD to the logic supply.
High-Side MOSFET Gate-Driver Bootstrap Input. Connect 0.22μF or higher value bypass capacitor
from BST2 to LX2. Keep trace length as short as possible. Connect a Schottky diode between BST2
and VLG. See the Selecting a BST Capacitor section.
High-Side MOSFET Gate-Drive Output. Connect to the high-side MOSFET gate. DH2 is pulled low in
shutdown.
Inductor Connection. Connect to the switched side of the inductor.
Negative Current-Sense Input. Connect to a current-sense resistor in series with the low-side
MOSFET, or connect to LX2 to use the low-side MOSFET’s on-resistance for current sensing.
Low-Side MOSFET Gate-Driver Output. Connect to the low-side MOSFET gate. DL2 is pulled low in
shutdown.
Power Ground. Connect to power ground at the point where the current-sense resistors or low-side
MOSFET sources connect. PGND is used as the positive current-sense connection.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1937EEI+ | 功能描述:DC/DC 开关控制器 2-Phase Desktop CPU Core Supply Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1937EEI+T | 功能描述:DC/DC 开关控制器 2-Phase Desktop CPU Core Supply Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1937EEI-T | 功能描述:开关变换器、稳压器与控制器 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX1937EEI-TG069 | 制造商:Maxim Integrated Products 功能描述: |
| MAX1938EEI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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