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| 型号： | MAX8667ETEHR+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/18页 |
| 文件大小： | 388K |
| 描述： | IC REG QD BCK/LINEAR SYNC 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 拓扑： | 降压（降压）同步（2），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 4 |
| 频率 - 开关： | 1.5MHz |
| 电压/电流 - 输出 1： | 1.8V，600mA |
| 电压/电流 - 输出 2： | 1.2V，1.2A |
| 电压/电流 - 输出 3： | 2.6V，300mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 2.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 包装： | 管件 |
1.5MHz Dual Step-Down DC-DC Converters
with Dual LDOs and Individual Enables
8 _______________________________________________________________________________________
Pin Description
NAME
PIN
MAX8667 MAX8668
FUNCTION
1
EN3 EN3
Enable Input for Regulator 3. Drive EN3 high or connect to IN34 to turn on regulator 3. Drive low
to turn off regulator 3 and reduce input quiescent current.
2 OUT3 OUT3
Output of Regulator 3. Bypass OUT3 with a 4.7礔 ceramic capacitor to GND. OUT3 is
discharged to GND through an internal 1k& in shutdown.
3
IN34 IN34
Input Voltage for LDO Regulators 3 and 4. Supply voltage range is from 1.7V to 5.5V. This
supply voltage must not exceed V
IN12
. Connect a 4.7礔 or larger ceramic capacitor from IN34
to ground.
4 OUT4 OUT4
Output of Regulator 4. Bypass OUT4 with a 4.7礔 ceramic capacitor to GND. OUT4 is
discharged to GND through an internal 1k& in shutdown.
5
EN4 EN4
Enable Input for Regulator 4. Drive EN4 high or connect to IN34 to turn on regulator 4. Drive low
to turn off regulator 4 and reduce input quiescent current.
6 GND GND Ground
7
REF REF Reference Output. Bypass REF with a 0.01礔 ceramic capacitor to GND.
8 OUT2 Feedback Input for Regulator 2. Connect OUT2 directly to the output of step-down regulator 2.
FB2
Feedback Input for Regulator 2. Connect FB2 to the center of a resistor feedback divider
between the output of regulator 2 and ground to set the output voltage. See the Setting the
Output Voltages and Voltage Positioning section.
9 PGND2 PGND2 Power Ground for Step-Down Regulator 2
10 LX2
LX2 Inductor Connection for Regulator 2
11 IN12 IN12
Input Voltage for Step-Down Regulators 1 and 2. Supply voltage range is from 2.6V to 5.5V. This
supply voltage must not be less than V
IN34
. Connect a 10礔 or larger ceramic capacitor from
IN12 to ground.
12 LX1
LX1 Inductor Connection for Regulator 1
13 PGND1 PGND1 Power Ground for Step-Down Regulator 1
14 OUT1 Feed b ack Inp ut for Reg ul ator 1. C
onnect OU T1 d i r
ectl y to the outp ut of step
- d
ow n r eg ul ator 1.
FB1
Feedback Input for Regulator 1. Connect FB1 to the center of a resistor feedback divider
between the output of regulator 1 and ground to set the output voltage. See the Setting the
Output Voltages and Voltage Positioning section.
15 EN1 EN1
E nab l e Inp ut for Reg ul ator
1. D r i ve E N 1 hi g h or connect to IN 12 to tur n on step - d ow
n r eg
ul
ator 1.
D r
i ve l ow to tur n off the r eg ul ator
and r ed uce i np ut q ui escent cur r ent.
16 EN2 EN2
E nab l e Inp ut for Reg ul ator
2. D r i ve E N 2 hi g h or connect to IN 12 to tur n on step - d ow
n r eg
ul
ator 2.
D r
i ve l ow to tur n off the r eg ul ator
and r ed uce i np ut q ui escent cur r ent.
EP
EP Exposed Paddle. Connect to GND, PGND1, PGND2, and circuit ground.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8667ETEHR+ | 功能描述:直流/直流开关转换器 1.5MHz Dl Step-Down DC/DC 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 |
| MAX8667ETEHR+T | 功能描述:直流/直流开关转换器 1.5MHz Dl Step-Down DC/DC 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 |
| MAX8667ETEJS+ | 功能描述:直流/直流开关转换器 1.5MHz Dl Step-Down DC/DC 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 |
| MAX8667ETEJS+T | 功能描述:直流/直流开关转换器 1.5MHz Dl Step-Down DC/DC 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 |
| MAX8668ETEA+ | 功能描述:直流/直流开关转换器 1.5MHz Dl Step-Down DC/DC 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 |
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