Dialog

Nanopower PMIC

DA9073
Dialog Semiconductor发表支援低功耗IoT应用的第一款全整合nanopower PMIC,All-in-one方案解决电池寿命挑战,满足消费者对IoT装置的多功能需求。
Nanopower PMIC
现今长时处于作业状态(always on)的IoT应用,例如健身追踪器、智慧型手表和智慧型家用产品,在设计上都以减少充电需求为考量,然而不断扩充的功能已使电池寿命成为一项新挑战。对工程师而言,电路板空间非常珍贵,因此相较于电池容量的增加,新的电源管理方案越来越受到欢迎。

Dialog的新DA9070和DA9073 nanopower PMIC针对此一成长中的需求而开发新PMIC延长了电池寿命,系统内的always-on元件降压稳压器运作仅需< 1uA静态电流,并且结合所有关键电源管理功能,相较于离散稳压器可减少25%电路板面积。开发者也可以利用整合的电压与电流监测器,以DA9070建立一个电池电量计。

市场上的其他方案或许也整合了一些功能,但Dialog的新nanopower PMIC为系统设计师提供了一个all-in-one电源管理方案。如此,这些PMIC非仅有助于延长IoT装置的电池寿命,而且也能为开发者节省宝贵的电路板面积。

DA9073 is a highly integrated, configurable, low quiescent current PMIC that integrates the most common needs for wearables, home automation and low power battery applications. The Power Management IC (PMIC) comprises a linear charger with Power Path management, ultralow quiescent current (Iq) buck regulator and LDO/Load Switches, wide output voltage boost regulator, watchdog and protection features in an I2C configurable compact WLCSP package. DA9073 has several power saving modes to increase battery life whether the product sits on the shelf or is in operation. Further savings in power are achieved with the ultra-low Iq buck converter that is efficient down to 10 μA load currents and low Iq LDOs. The uncommitted inputs of LDOs can be connected to either the battery or buck output. The integrated, high-efficiency boost regulator supports both sensors and display supply needs with a wide range configurable output voltage.

DA9073 provides charge current up to 500 mA to speed up the charge cycle. The charge profile is programmable by external resistors or in software, allowing either stand-alone operation or host control.

DA9073 includes dynamic power path management which automatically balances current delivered between the system and the battery.

Features
  • 2.5V - 5.5V operating range
  • 22V tolerant, 500mA linear battery charger with Power Path
  • Battery protection during charging & discharging
  • 300mA buck converter with 900nA quiescent current
  • 3x 150mA LDO/Load Switches with 800nA quiescent current
  • Boost regulator with 4.5V - 18V output range
  • Current & voltage monitors for battery fuel gauge (DA9070 only)
  • Dedicated watchdog & reset inputs
  • I2C Interface

Benefits
  • Flexible charger supports slow and fast charging rates
  • Low quiescent current buck regulator and LDOs extend battery life
  • Integrated PMIC reduces power management footprint by 25% compared to discrete solutions
  • Programmable power states optimize performance in operating modes and extend battery life in storage modes

Applications
  • Fitness Trackers
  • Smartwatches
  • Wireless Headphones
  • Portable Medical
  • Personal Health Monitors
  • Portable Gaming
  • Wireless Earbud Cradles
  • Home Automation
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