MAX77642
Ultra Configurable PMIC Featuring 93% Peak Efficiency Single-Inductor, 3-Output Buck-Boost, 1-LDO for Long Battery Life
3つのSIMO出力、93%のピーク効率
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主な特長
アプリケーション/用途
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| # LDO Outputs | 1 |
| VOUT (V) (min) | 0.5 |
| VOUT (V) (max) | 5.5 |
| Package/Pins | THIN WLP/25 |
| Budgetary Price (See Notes) | 1.8 |
簡易ブロック図
パラメーター
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| # LDO Outputs | 1 |
| VOUT (V) (min) | 0.5 |
| VOUT (V) (max) | 5.5 |
| Package/Pins | THIN WLP/25 |
| Budgetary Price (See Notes) | 1.8 |
主な特長
- Highly Integrated
- 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
- Supports Wide Output Voltage Range from 0.5V to 5.5V for all SIMO Channels
- 1x 150mA LDO
- 100mA in LSW mode
- 2x GPIOs (MAX77643)
- Watchdog Timer (MAX77643)
- 3x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
- Ultra Low-Power SIMO
- 5μA Operating Current (3x SIMO Channels + 1x LDOs)
- 1μA Operating Current per SIMO Channel
- 0.3μA Shutdown Current
- 93% Peak Efficiency in Boost-Only Mode
- 91% Peak Efficiency in Buck-Only Mode
- Less Than 20mVpp Output Ripple at VOUT = 1.8V
- Automatic Low-Power Mode to Normal-Power Mode Transition
- Flexible and Configurable
- Ultra-Configurable Resistor Programmable Output Voltages (MAX77642)
- I2C-Programmable Output Voltages (MAX77643)
- Small Size
- 4.24mm2 Wafer-Level Package (WLP)
- 25-Bump, 0.4mm Pitch, 5 x 5 Array
アプリケーション/用途
- 次世代ヒアラブル
- フィットネス、ヘルス、およびアクティビティモニタ
- セーフティおよびセキュリティモニタ
- ポータブル民生機器
説明
The MAX77642/MAX77643 provide power supply solutions for low-power applications where size and efficiency are critical. The IC features a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. A 150mA LDO provides ripple rejection for audio and other noise-sensitive applications. The LDO can also be configured as load switches to manage power consumption by disconnecting external blocks when not required.
The MAX77642's SIMO and LDO output voltages are individually programmable through resistors. A peak current limit input is used to set both the inductor's peak current limits of the device with a single resistor. Individual enable pins combined with the flexible resistor programmability allows the device to be tailored for many applications.
This MAX77643's SIMO and LDO output voltages are individually programmable through I2C and in addition, includes two GPIOs with alternate modes for scalability. A bidirectional I2C serial interface allows for configuring and checking the status of the devices. An internal on/off controller provides a controlled startup sequence for the regulators and provides supervisory functionality while they are on. Numerous factory programmable options allow the device to be tailored for many applications, enabling faster time to market.
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