AOZ1083 查看數據表（PDF） - Alpha and Omega Semiconductor

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AOZ1083

2A Simple Buck Regulator

Alpha and Omega Semiconductor 

AOZ1083

Absolute Maximum Ratings

Exceeding the Absolute Maximum Ratings may damage the

device.

Parameter

Rating

Supply Voltage (VVIN)

LX to GND

DIM to GND

FB to GND

BST to AGND

Junction Temperature (TJ)

Storage Temperature (TS)

ESD Rating(1)

30 V

-0.7 V to VVIN+ 2 V

-0.3 V to 26 V

-0.3 V to 6 V

VLX + 6 V

+150 °C

-65 °C to +150 °C

2 kV

Note:

1. Devices are inherently ESD sensitive, handling precautions are

required. Human body model rating: 1.5 kΩ in series with 100 pF.

Recommended Operating Conditions

The device is not guaranteed to operate beyond the

Recommended Operating Conditions.

Parameter

Rating

Supply Voltage (VVIN)

Output Voltage Range

Ambient Temperature (TA)

Package Thermal Resistance (ΘJA)

SOT23-6L(2)

3.0 V to 26 V

Up to 0.85 x VVIN

-40 °C to +85 °C

220 °C/W

Note:

2. The value of ΘJA is measured with the device mounted on a 1-in2

FR-4 board with 2 oz. Copper, in a still air environment with

TA = 25 °C. The value in any given application depends on the

user’s specific board design.

Electrical Characteristics

TA = 25 °C, VVIN = VDIM = 12 V. Specifications in BOLD indicate a temperature range of -40 °C to +85 °C. These specifications are

guaranteed by design.

Symbol

Parameter

Conditions

Min. Typ. Max. Units

VVIN

VUVLO

Supply Voltage

Input Under-Voltage Lockout Threshold

UVLO Hysteresis

IVIN Supply Current (Quiescent)

IOFF Shutdown Supply Current

VFB Feedback Voltage

VFB_LOAD Load Regulation

VFB_LINE Line Regulation

IFB Feedback Voltage Input Current

PWM DIMMING

VDim_OFF Dimming Input Threshold

VDim_ON

VDim_HYS Dimming Input Hysteresis

IDIM Dimming Input Current

MODULATOR

fO

DMAX

TON_MIN

ILIM

Frequency

Maximum Duty Cycle

Minimum On Time

Current Limit

Over-Temperature Shutdown Limit

TSS Soft Start Interval

POWER STATE OUTPUT

RDS(ON)

RDS(ON)

ILEAKAGE

NMOS On-Resistance

NMOS On-Resistance

NMOS Leakage

VVIN Rising

VVIN Falling

IOUT = 0, VFB = 1 V, VDIM > 1.2 V

VDIM = 0 V

TA = 25 ºC

120 mA < Load < 1.08 A

Load = 600 mA

VFB = 280 mV

Off Threshold

On Threshold

TJ Rising

TJ Falling

VIN = 12 V

VIN = 3.3 V

VDIM = 0 V, VLX = 0 V

3

26

V

2.9

V

2.3

V

200

mV

1

1.5

mA

8

μA

266 280 294

mV

0.5

%

0.03

%/V

500

nA

0.4

V

1.2

V

200

mV

3

μA

1.2

1.5

1.8

MHz

87

%

100

ns

1.5

1.9

2.3

A

150

°C

110

°C

400

μs

240

mΩ

380

mΩ

10

μA

Rev. 1.0 July 2011

www.aosmd.com

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