AOZ1905FI

AOZ1905FI Datasheet

AOZ1905

Part	Datasheet
AOZ1905FI	AOZ1905FI (pdf)

Related Parts	Information
AOZ1905DI	AOZ1905DI

PDF Datasheet Preview
AOZ1905 EZBoost 2A General Purpose Regulator The AOZ1905 EZBoost is a high-performance, currentmode, constant frequency step-up regulator with internal MOSFET. 600kHz/1.2MHz switching frequency allows the use of low-profile inductor and capacitors. The current-mode control ensures easy loop compensation and fast transient response. The AOZ1905 works from a 2.7V to 5.5V input voltage range and generates an output voltage as high as 24V. Other features include input under-voltage lockout, cycle-by-cycle current limit, thermal shutdown and soft-start. The AOZ1905 is available in a tiny 3mm x 3mm 10-pin DFN package and MSOP8 package and is rated over a -40°C to +85°C operating temperature range. 2.7V to 5.5V input voltage range Adjustable output up to 24V 600kHz/1.2MHz constant switching frequency Cycle-by-cycle current limit Thermal overload protection Programmable Soft-start Small 3mm x 3mm DFN 10L package MSOP-8L package LCD TV LCD Monitors Notebook Displays PCMCIA Cards Hand-Held Devices GPS Power TV Tuner 4.7µH VOUT C1 10µF 10µF FSEL R1 AOZ1905 C4 GND OFF ON COMP R3 Figure Typical Application Circuit Page 1 of 16 AOZ1905 Ordering Information Operating Temperature Range Package Environmental AOZ1905DI -40°C to +85°C 3x3 DFN-10 Green Product AOZ1905FI AOZ1905FIL -40°C to +85°C -40°C to +85°C MSOP-8 MSOP-8 RoHS Compliant Green Product All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards. Parts marked as Green Products with “L” suffix use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information. Pin Configuration COMP 1 FB 2 EN 3 GND 4 MSOP-8 Top View 8 SS 7 FSEL 6 IN 5 LX COMP 1 FB 2 EN 3 GND 4 GND 5 10 SS 9 FSEL 8 IN 7 LX 6 LX DFN-10 Top View Pin Description Pin Number Pin Name COMP DFN-10 1 MSOP-8 1 FSEL Pin Function Compensation Pin. COMP is the output of the internal transconductance error amplifier. Connect a RC network from COMP to GND to compensate the loop. Feedback Input. Connect a resistive divider between the boost regulator output and ground with the center tap connected to FB to set output voltage. Enable Input. Pull EN high to enable the boost regulator and pull EN low to disable the regulator. System Ground. Boost Regulator Switching Node. Input Supply Pin. Frequency Select Pin. The switching frequency is 1.2MHz when FSEL is connected to IN, and 600kHz when FSEL is connected to ground. Soft-Start Pin. Connect a capacitor from SS to GND to set the soft-start period. Page 2 of 16 AOZ1905 Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Rating IN to GND -0.3V to +6V LX to GND

PDF Datasheet Preview

AOZ1905

EZBoost 2A General Purpose Regulator

The AOZ1905 EZBoost is a high-performance, currentmode, constant frequency step-up regulator with internal MOSFET. 600kHz/1.2MHz switching frequency allows the use of low-profile inductor and capacitors. The current-mode control ensures easy loop compensation and fast transient response. The AOZ1905 works from a 2.7V to 5.5V input voltage range and generates an output voltage as high as 24V. Other features include input under-voltage lockout, cycle-by-cycle current limit, thermal shutdown and soft-start.

The AOZ1905 is available in a tiny 3mm x 3mm 10-pin DFN package and MSOP8 package and is rated over a -40°C to +85°C operating temperature range.
2.7V to 5.5V input voltage range Adjustable output up to 24V 600kHz/1.2MHz constant switching frequency Cycle-by-cycle current limit Thermal overload protection Programmable Soft-start Small 3mm x 3mm DFN 10L package MSOP-8L package

LCD TV LCD Monitors Notebook Displays PCMCIA Cards Hand-Held Devices GPS Power TV Tuner
4.7µH

VOUT

C1 10µF
10µF

FSEL R1

AOZ1905

C4 GND

OFF ON

COMP R3

Figure Typical Application Circuit

Page 1 of 16

AOZ1905
Ordering Information

Operating Temperature Range

Package

Environmental

AOZ1905DI
-40°C to +85°C
3x3 DFN-10

Green Product

AOZ1905FI AOZ1905FIL
-40°C to +85°C -40°C to +85°C

MSOP-8 MSOP-8

RoHS Compliant Green Product

All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards. Parts marked as Green Products with “L” suffix use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information.

Pin Configuration

COMP 1 FB 2 EN 3

GND 4

MSOP-8

Top View
8 SS 7 FSEL 6 IN 5 LX

COMP 1 FB 2 EN 3

GND 4 GND 5
10 SS 9 FSEL 8 IN 7 LX 6 LX

DFN-10

Top View

Pin Description

Pin Number

Pin Name COMP

DFN-10 1

MSOP-8 1

FSEL

Pin Function

Compensation Pin. COMP is the output of the internal transconductance error amplifier. Connect a RC network from COMP to GND to compensate the loop. Feedback Input. Connect a resistive divider between the boost regulator output and ground with the center tap connected to FB to set output voltage. Enable Input. Pull EN high to enable the boost regulator and pull EN low to disable the regulator. System Ground. Boost Regulator Switching Node. Input Supply Pin. Frequency Select Pin. The switching frequency is 1.2MHz when FSEL is connected to IN, and 600kHz when FSEL is connected to ground. Soft-Start Pin. Connect a capacitor from SS to GND to set the soft-start period.

Page 2 of 16

AOZ1905

Absolute Maximum Ratings

Exceeding the Absolute Maximum ratings may damage the device.

Parameter

Rating

IN to GND
-0.3V to +6V

LX to GND

More datasheets: 10336-C200-00 | 10340-C200-00 | 10314-C200-00 | 10350-C200-00 | M13099 SL001 | M13099 SL002 | M13099 SL005 | 26003 | 613 | AOZ1905DI

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Datasheet ID: AOZ1905FI 516319