Power Management ICs

ams

ams power management products cover a wide range of applications such as industrial (battery management, power supplies for embedded devices, handhelds), medical (handheld, highly integrated and compact solutions) and consumer electronics (audio / video handheld, mobile phones, navigation devices).

Buck/Boost, Step-up or Step-down controllers are available for power supplies with input voltages ranging from 0.6V to 5V, for battery applications, for voltages of 32V maximum as well as for wired applications.

With a variety of voltage monitor ICs, the correct operation of mobile devices can be guaranteed due to a safe startup and shutdown.

 

LED Driver ICs

In addition to these applications, intelligent derivatives such as the AS1130 with integrated memory management, adjustment of the LED current to compensate for LED tolerances and the possibility of up to 132 LEDs with only one IC are available:

For generic LED signal applications, the AS11xx series products are suitable. It doesn’t matter whether you need a single signal LED, a classic 7-segment display, an LED display with self-diagnostic function or an additional integrated key query for the realization of remote control units - there is a matching part in the AS11xx series. In addition to these applications, intelligent derivatives like the AS1130 are also available:

ProductDescription
AS11008x8 Matrix LED driver
AS110180mA 2 channel direct LED driver
AS110240mA 3 channel direct LED driver
AS110340mA 4 channel direct LED driver
AS110440mA 4channel direct LED driver
AS11054x8 Matrix LED driver
AS11068x8 Matrix LED driver
AS11078x8 Matrix LED driver with slew rate
AS11084x8 Matrix LED driver
AS11098 channel 100mA direct LED driver
AS111016 channel 100mA direct LED Driver
AS1111Low-Dropout LED Drivers
AS111216 channel 100mA PWM LED driver
AS111316 channel 50mA direct LED driver
AS111564LED matrix driver with 16keys
AS111664LED matrix driver
AS11174LED matrix driver with 8keys
AS111864LED matrix driver
AS1119144LED full or crossplexing driver with CP
AS112116ch 40mA 30V PWM LED driver
AS112212ch 40mA 30V PWM LED driver
AS112316channel 50mA direct LED driver
AS1130132LED full or crossplexing driver


 

Panel Backlight

ams LED drivers can be used to control up to 16 parallel LED strings for use in lamps thanks to diverse configuration options. There are derivatives with up to 3 integrated and regulated DC / DC step-up voltage regulators. Flexibility for adjustment of the LED current is ensured by the use of external FETs.

ProductDescription
AS36914x400mA precision current source driving RGB and white color LEDs for general lighting
AS3693A16-channel high precision LED driver for LCD backlight
AS3693B16-channel high precision LED controller for LCD backlight
AS3693B116-channel high precision LED controller for LCD backlight
AS3695A16-channel high precision LED driver for LCD backlight
AS3695C16 channels precision LED controller
AS36964-channel white LED controller for general lighting or 3D-LCD backlight 
AS381016-channel white LED controller for LCD backlight
AS382016 channel white LED controller for LCD backlight
AS382112 channel LED Controller
AS38228 channel white LED controller for LCD backlight
AS38236-channel white LED controller for LCD backlight
AS282416-channel local dimming LED backlight controller
AS38336 channel high-precision LED controller for 3D-LCD backlight with integrated step-up Controller
AS38344 channel high-precision LED controller for 3D-LCD backlight with integrated step-up Controller
AS3834B4 channel high-precision LED controller for 3D-LCD backlight with integrated step-up controller


 

Flash Drivers

For applications such as the LED camera flash in which a high current is required for a short period of time ams developed various products. Available are:

ProductDescription
AS36308A Supercap LED flash Driver
AS3635Xenon-flash charger, IGBT driver
AS3536High-end Xenon-flash charger and video LED driver
AS3642500mA single LED flash driver
AS36431.3A single LED flash driver
AS3644320mA single LED flash driver
AS3645A800mA single-LED, 1A dual-LED flash driver
AS36471.6A single LED flash driver
AS36482A dual LED flash driver
AS36492.5A dual LED flash driver
AS3685A1.0A single LED flash driver
AS3685B1.0A single LED flash driver
AS3685C1.0A single LED flash Driver


 

Lighting Management Units

For handheld applications with displays, a display backlight driver with a smaller size and additional signal LEDs are often needed. For Audio Player designs, the AS3687XM even offers an audio / light synchronization option:

ProductDescription
AS3490Highly efficient 2 to 6 LEDs backlight driver with PWM input
AS3492Highly efficient 2 to 10 LEDs backlight driver with PWM input
AS3675Flexible lighting management unit with charge-pump, DC-DC, 13 current sinks
AS3676Flexible lighting management unit with charge-pump, DC-DC, 13 current sinks, ALS, DLS, audio synchronisation and LDO
AS3677Flexible lighting management unit
AS3687XMFlexible lighting management unit with charge-pump, DC/DC, 7 current sinks, audio synchronisation, ADC, LDO
AS3688Flexible lighting management (charge pump, DCDC step Up, current sink, ADC, LDO)
AS3689Flexible lighting management (charge pump, DCDC step Up, current sink, ADC, LDO)


 

Smart Notification Light

It is very difficult to offer the user rapid feedback about specific states when a system is switched off because of complex operating systems that have long boot or wake time. ams offers a hardware solution so that a system can offer light signals although it is switched off:

ProductDescription
AS3661Programmable, 9 channel smartlight LED driver
AS3665Programmable, 9 channel smartlight LED driver
AS36684 Channel breathlight Controller


 

DC-DC Buck-Boost Converters

ams provides highly efficient buck/boost controller for mobile devices with Li-Ion batteries.

ProductDescription
AS1331300mA, DC-DC buck-boost converter
AS1337200mA DC-DC step-up converter with buck mode


 

DC-DC Buck Converters

ams offers an application-specific portfolio with very high efficiencies of up to 96% for standard step-down application from a 5V supply.

Whether it is the high integration of 2 switching regulators or to optimize the noise reduction between input and output voltage for wireless applications or high switching frequencies to use of low inductances - ams has a suitable product.

The AS1341 and AS7620 can be used with input voltages of up to 32V.

ProductDescription
AS1313Ultra low 1μA quiescent current DC-DC step-down converter
AS1324DC-DC step-down converter, 600mA, 1.5MHz
AS1341HV DC-DC step-down converter 20V, 600mA
AS1382Small solution 1A step down DC-DC converter
AS7620HV DC-DC step-down converter, 32V, with dual power monitor


 

DC-DC Charge Pumps

ams offers an application-specific portfolio with very high efficiencies of up to 96% for standard step-down application from a 5V supply.

Whether it is the high integration of 2 switching regulators or to optimize the noise reduction between input and output voltage for wireless applications or high switching frequencies to use of low inductances - ams has a suitable product.

The AS1341 and AS7620 can be used with input voltages of up to 32V.

ProductDescription
AS1302Inductorless boost converter, lowest power, 5V/30mA


 

DC-DC Boost Converters

Output voltages of up to 50V from input voltage of 3.3V, and applications that allow only a very low self-consumption are requirements that are easy to implement with products from ams at efficiencies up to 96%.

ProductDescription
AS1310Ultra low 1µA quiescent current
AS1312Ultra low 1µA quiescent current
AS1322DC-DC step-up converter low voltage, 1.2 MHz
AS1323DC-DC step-up converter 1.6µA quiescent current
AS1326DC-DC step-up converter high-current 650mA
AS1329DC-DC step-up converter low voltage, 1.2 MHz
AS1330DC-DC step-up converter 4MHz and 470nH inductor
AS1340HV DC-DC step-up converter, 50V, adjustable output with shutdown disconnect
AS1345A18V, high efficiency, 100mA coil current, DC-DC step-up converter
AS1345B18V, high efficiency, 200mA coil current, DC-DC step-up converter
AS1345C18V, high efficiency, 350mA coil current, DC-DC step-up converter
AS1345D18V, high efficiency, 500mA coil current, DC-DC step-up converter
AS1383200mA, 3.5MHz DC-DC Step-Up Converter


 

DC-DC Controller

The AS1390x can be used to generate both the logic voltage (100mA) and the LED string voltage up to 90V (3A) from a 10V-30V Input.

ProductDescription
AS1390AHigh power boost controller and buck converter for LED backlight
AS1390BHigh power boost controller and buck converter for LED backlight


 

LDOs

The ams linear regulator portfolio includes products with very low quiescent current, excellent noise suppression for radio applications and miniature applications (Iout = 200mA @ 1mm x 1mm Package Size - AS1369):

ProductDescription
AS1353150mA low dropout regulator, rverse battery protection, low noise bypass pin
AS1355300mA Ttple low drop out regulator
AS1358150mA 9µVrms ultra-low-noise, 92dB high-PSRR - LDO
AS1359300mA 9µVrms ultra-low-noise, 92dB high-PSRR - LDO
AS13601.5µA low-power, 20V, positive voltage regulator
AS1363500mA ultra-low-dropout linear regulator
AS13641A ultra-low-dropout linear regulator
AS1369200mA micro-sized ultra-low-dropout Regulator
AS1370200mA, 50V input, linear voltage regulator with only 3uA of quiescent current
AS1374200mA, ultra-low-noise, high-PSRR, dual low dropout regulators
AS13761A, Low Input Voltage, Ultra low drop out voltage with Low Quiescent Current LDO


 

Power Management Units

Application processor power supply requirements can be very complex and also the space requirement is often critical. In order to realise a variety of voltages for different applications in confined spaces, ams offers a variety of PMUs (Power Management Units).

ProductDescription
AS36063 buck DCDCs, 4 LDOs, 1A linear charger, general purpose ADC, programmable startup
AS36073 buck DCDCs, 5 LDOs, 1A linear charger, general purpose ADC, programmable startup
AS36083x 1A buck DCDCs, 5 LDOs, 1A linear charger, general purpose ADC, programmable startup
AS36583 buck DCDCs, 2 Boost DCDCs, 3 RF LDOs, 4 digital LDOs, step-down charger, USB and linear charger, 18-Bit audio DAC + 16-Bit audio ADC, headphone amplifier, current sinks, touch screen interface, RTC, general purpose ADC, programmable Startup
AS37011 buck DCDC, 2 LDOs, 500mA power path management linear charger, programmable startup
AS37095 buck DCDCs, 2 LDOs, programmable startup
AS37113 buck DCDCs, 3A DCDC controller, 8 LDOs, 1.5A linear/DCDC charger, 2 boost DCDC, general purpose ADC, programmable startup
AS37123 buck DCDCs, 8 LDOs, 3 boost DCDC, general purpose ADC, programmable startup
AS37133 buck DCDCs, 3A DCDC controller, 8 LDOs, 2 boost DCDC, general purpose ADC, programmable startup
AS37153 buck DCDC, buck controller, 8 LDOs, 2 Boost converters, General Purpose ADC
AS37163 buck DCDC, 2 buck controller, 8 LDOs, 2 boost converters, General Purpose ADC
AS37214 buck DCDCs, 20A DCDC controller, 12 LDOs, general purpose ADC, programmable startup
AS37224 buck DC-DC, 24A DC-DC controller, 12 LDOs, general purpose ADC
AS37288A HV dual-phase power stage (2 x 4A)
AS37295A dual-phase power stage (2 x 2.5A)
AS3729B8A dual-phase power stage (2 x 4A)


 

Supervisors

To ensure the correct function of embedded systems it is very important to ensure self-sufficient power monitoring so as to detect early faults and ensure safe emergency shutdowns and guaranteed start-up. The situation is similar in battery-powered systems where it is necessary to avoid undefined switch off due to lack of energy reserves.

With the family of SUPERVISORS AS19xx ams has developed a very efficient and yet highly accurate voltage monitoring system to support the development engineer with functional safety:

ProductDescription
AS1904150nA ultra low power µP supervisory circuit, push-pull active-low reset
AS1905150nA ultra low power µP supervisory circuit, push-pull active-high reset
AS1906150nA ultra low power µP supervisory circuit, open-drain active-low reset
AS1907Low-voltage µP supervisory circuit, active-low push/pull reset
AS1908Low-voltage µP supervisory circuit, active-high push/pull reset
AS1909Low-voltage µP supervisory circuit, open-drain reset
AS1916Microprocessor supervisory circuits with manual reset and watchdog
AS1917Microprocessor supervisory circuits with manual reset and watchdog
AS1918Microprocessor supervisory circuits with manual reset and watchdog
AS1920Triple-voltage supervisory circuit with push/pull reset
AS1922Triple-voltage supervisory circuit with open-drain reset
AS1923Quad-voltage supervisory circuit


 

Analog Switch

ProductDescription
AS1747Dual SPDT, audio switch with negative signal capability


Operational Amplifiers

ProductDescription
AS1712Quad rail to rail operational amplifier with shutdown

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