Dialog

Nanopower PMIC

DA9073
Dialog Semiconductor發表支援低功耗IoT應用的第一款全整合nanopower PMIC,All-in-one方案解決電池壽命挑戰,滿足消費者對IoT裝置的多功能需求。
Nanopower PMIC
現今長時處於作業狀態(always on)的IoT應用,例如健身追蹤器、智慧型手錶和智慧型家用產品,在設計上都以減少充電需求為考量,然而不斷擴充的功能已使電池壽命成為一項新挑戰。對工程師而言,電路板空間非常珍貴,因此相較於電池容量的增加,新的電源管理方案越來越受到歡迎。

Dialog的新DA9070和DA9073 nanopower PMIC針對此一成長中的需求而開發新PMIC延長了電池壽命,系統內的always-on元件降壓穩壓器運作僅需< 1uA靜態電流,並且結合所有關鍵電源管理功能,相較於離散穩壓器可減少25%電路板面積。開發者也可以利用整合的電壓與電流監測器,以DA9070建立一個電池電量計。

市場上的其他方案或許也整合了一些功能,但Dialog的新nanopower PMIC為系統設計師提供了一個all-in-one電源管理方案。如此,這些PMIC非僅有助於延長IoT裝置的電池壽命,而且也能為開發者節省寶貴的電路板面積。

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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