AS3711-BQFP
AS3711-BQFP Datasheet
AS3711
| Part | Datasheet |
|---|---|
AS3711-BQFP |
AS3711-BQFP (pdf) |
| Related Parts | Information |
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AS3711-BQFP-00 |
AS3711-BQFP-00 |
AS3711-BQFP-03 |
AS3711-BQFP-03 |
AS3711-BQFP-FF |
AS3711-BQFP-FF |
AS3711-BWLT-00 |
AS3711-BWLT-00 |
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AS3711-BWLM-00 |
AS3711-BWLM-00 |
AS3711 EVAL BOARD |
AS3711 EVAL BOARD |
| PDF Datasheet Preview |
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| AS3711 Quad Buck High Current PMIC with Charger The AS3711 is a compact System PMU with integrated battery charger and back light driver. The device offers advanced power management functions. All necessary ICs and peripherals in a battery powered mobile device are supplied by the AS3711. It features 3 DCDC buck converters as well as 8 low noise LDOs. The different regulated supply voltages are programmable via the serial control interface. 4MHz operation with 1uH coils are reducing cost and PCB space. AS3711 further features a DCDC buck controller which is ideal to support processor core currents up to 3A. The two step-up converter generate voltages for e.g.the backlight, classD amplifier, USB host support or LCD display supply. Both constant voltage for e.g. OLED supply as well as constant current white LED backlight operations with three current sinks are possible. An internal voltage protection is limiting the output voltage in the case of external component failures. AS3711 contains a linear or switching mode Li-Ion battery charger with constant current and constant voltage. The maximum charging current is 1.5A. An integrated battery switch and an optional external switch are separating the battery during charging or whenever an external power supply is present. With this switch it is also possible to operate with no or deeply discharged batteries. A programmable current limit 100mA - 2.5A can be used to control the maximum current used from a USB supply or charger input. Additional features are a 30V OV protection and battery temperature supervision. The single supply voltage may vary from 2.7V to 5.5V. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet [v1-34] 2014-Nov-10 Page 1 Document Feedback AS3711 − General Description Figure 1 Added Value Of Using AS3711 Key Benefits & Features The benefits and features of AS3711, Quad Buck High Current PMIC with Charger are listed below: Compact design due to small coils for IO and memory voltage generation • 3 DCDC step down regulators 2-4MHz - DVM 0.6V-3.3V;1x1.2-1.5A, 2x0.7-1A - 60uA quiescent current - 2A with combined DCDC 2 & 3 High current generation for processor core • DCDC step down controller - DVM 0.6V-3.3V 2-3A Supply multiple independent voltage rails for general IO supplies • 2 analog low noise LDOs, 6 digital LDOs - 2x1.2-3-3V, 6x0.9-3.3V 150-300mA - 30uA quiescent current low power mode • 1 ultra low power always on LDO 2.5V, 10mA Backlight boost controller for multiple display configurations or fixed voltage supplies HV Backlight Driver • 2xstep up with external transistor - e.g. • Voltage control mode and over-voltage protection • 3 programmable current sinks max. 40mA • Possible external PWM dimming input DLS, CABC Self contained free configurable charger with stand alone supervisory functions Battery Charger • Programmable trickle charging 25-220mA • Programmable constant current charging up to 1500mA • Programmable constant voltage charging 3.9V-4.25V • Charger time-out and temperature supervision • Selectable current limitation for USB mode • Integrated battery switch & ideal diode linear mode • External battery switch control switching mode • External 30V OV protection Save supervision in HV which works also without a processor Supervisor • Automatic battery monitoring with interrupt generation and selectable warning level • Automatic temperature monitoring with interrupt generation and selectable warning and shutdown levels Very low current time keeping and alarm functions without the need of a processor Real Time Clock • Ultra low power 32kHz oscillator • Sec and minute counter, auto wake-up • Programmable alarm • Repeating alarm seconds, minutes, 2 minutes, or 8 minutes • 32kHz clock output to peripheral • <1uA total power consumption Page 2 Document Feedback ams Datasheet [v1-34] 2014-Nov-10 AS3711 − General Description Flexible multi-purpose IOs for general control or measurement tasks General Purpose IOs • 10-bit general purpose ADC input • Wake-up/sleep and DVM input • PWM DLS, CABC dimming input • Status output for charger, low battery, power good and step-up over-current • Q32k clock output • Interrupt output • PWM output • Step-up feedback input Flexible and fast adaptations to different processors/applications. OTP programmable BOOT Sequence • Programmable regulator default voltages • Programmable start-up sequence Enables the processor to check the system state in detail General Purpose ADC • 10-bit resolution • Several internal / external sources - VUSB, VSUP, CHGIN, VBAT - GPIOx, CURRx - XOUT32K, SENSEN_SU1, LX_SD4 - Chip temperature Easy control of all PMIC functions, Safety shutdown feature, without reset button. Control Interface • I2C control lines, including watchdog • ON input with 4/8s emergency shut-down • Bidirectional reset, with selectable delay • Ultra low power standby mode No need for external POR or supervisory Power-On Reset Circuit Dedicated packages for specific applications. Optimization for PCB cost or size. Packaging • QFN56 7x7mm 0.4mm pitch • CSP64 3.6x3.5mm 0.4mm pitch The AS3711, Quad Buck High Current PMIC with Charger, is suitable for Portable Media Players, Portable Navigation Devices, E-Books, Mobile Internet Devices, and Tablet PCs. ams Datasheet [v1-34] 2014-Nov-10 Page 3 Document Feedback Figure 2 AS3711 Block Diagram for QFN56 AS3711 − Ordering & Contact Information Ordering & Contact Information The devices shown in Figure 163 are available as standard products. Figure 163 Ordering Information Part Number Marking Sequence Delivery Form Package AS3711-BQFR-FF AS3711-BQFP-00 AS3711-BQFP-xx M2V1-FF M2V1-00 M2V1-xx Sequence programmable on request Quad Buck High Current PMIC with Charger Default sequence Quad Buck High Current PMIC with Charger Customer specified Quad Buck High Current PMIC with Charger Tape & Reel dry pack Tape & Reel dry pack Tape & Reel dry pack QFN56 7x7 0.4mm pitch QFN56 7x7 0.4mm pitch QFN56 7x7 0.4mm pitch AS3711-BWLT-FF M2V1-FF Sequence programmable on request Quad Buck High Current PMIC with Charger Tape & Reel WL-CSP64, 0.4mm pitch AS3711-BWLT-00 M2V1-00 Default sequence Quad Buck High Current PMIC with Charger Tape & Reel WL-CSP64, 0.4mm pitch AS3711-BWLT-xx M2V1-xx Customer specified Quad Buck High Current PMIC with Charger Tape & Reel WL-CSP64, 0.4mm pitch Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit: Headquarters ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten Austria, Europe Tel +43 0 3136 500 0 Website: ams Datasheet [v1-34] 2014-Nov-10 ams Datasheet [v1-34] 2014-Nov-10 Page 143 Document Feedback |
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