ETA1661

www.etasolution.com

2

Empowering Thinkers

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

1

2

3

6

4

VIN

GND

SW

FB

BST

SOT563

5 EN

ETA1661

(Note: Exceeding these limits may damage the device.

Exposure to absolute maximum rating conditions for long

periods may affect device reliability.)

IN, SW, EN Voltage …………...............–0.3V to 19V

BST Voltage...................................–0.3V to SW+6V

FB Voltage ............................................–0.3V to 6V

Operating Temperature Range …... –40°C to 85°C

Storage Temperature Range .........–55°C to 150°C

Thermal Resistance

θJA

θJC

SOT563………….….…...110….….50…....…. °C /W

Lead Temperature (Soldering,10 sec)…........260°C

ELECTRICAL CHARACTERISTICS

(VIN = 12V, VOUT = 3.3V, unless otherwise specified. Typical values are at TA = 25°C.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Input Supply Range

4.5

18

V

Input Under Voltage Lock Output

VIN Rising

4.05

V

UVLO Hysteresis

VIN Falling

300

mV

IN Over Voltage Protection Threshold

VIN Rising

19

V

OVP Hysteresis

VIN Falling

0.9

V

Quiescent Current

EN = 2V

230

µA

Shutdown Current

EN = 0V

7

17

µA

FB Pin Regulation Voltage

0.594

0.6

0.606

V

FB Input Current

0

1

uA

Switching Frequency

600

KHz

Maximum Duty Cycle

97

%

Short Circuit Hiccup Time

On Time

2

ms

Off Time

6

ms

FB out-of Hiccup Threshold

VOUT rising

75

%

FB Enter Hiccup Threshold

VOUT falling

50

mV

High Side Switch On Resistance

ISW=1A

68

mΩ

Low Side Switch On Resistance

ISW=1A

32

mΩ

SW Leakage Current

VIN=VSW=12V

10

uA

Peak inductor protection current

High Side ON

8.8

A

Lowside current limit protection

5

A

Reverse Current Protection

200

mA

EN Rising Threshold

1.15

V

EN Threshold Hysteresis

100

mV