–2–

REV. PrE

= +3.3 V, T

= +3.3 V, T

= +3.3 V, T

= -40°C to +85°C, unless otherwise noted)

= -40°C to +85°C, unless otherwise noted)

= -40°C to +85°C, unless otherwise noted)

= -40°C to +85°C, unless otherwise noted)

Parameter

Symbol

Conditions

Min

Typ

Max

Units

SUPPLY

Input Voltage Range

DRV to GND

2.5

11

V

Quiescent Current

Operating

12

mA

DRV = GND

No load

180

280

µA

Shutdown

15

40

µA

Ground Current

2

Normal Operation

3

3.6

mA

DRV = 2 V

Thermal Shutdown Threshold

160

°C

OSCILLATOR

Oscillator Frequency

0.75

1

1.25

MHz

Minimum Sleep Duty Cycle

14

%

Maximum Duty Cycle

100

%

Wake up Hysteresis

20

30

40

mV

OUTPUT SWITCH

Switch On Voltage

3

.7

1.0

V

GND

Current Limit Threshold

1.5

1.7

2

A

Leakage Current

0.5

µA

ERROR AMPLIFIER

Reference Voltage Accuracy

FB tied to COMP

1.222

1.245

1.265

V

Reference Voltage Line

FB tied to COMP,

.02

%/V

Regulation

Feedback Input Bias Current

soft start expired

-50

1

50

nA

Maximum Output Current

35

60

85

µA

Short Circuit Current

20

40

µA

shutdown

Transconductance

480

µA/V

MODULATOR

Transconductance

1A/V

Control Offset Voltage

0.90

V

Soft Start Time

250

600

µs

Shutdown Threshold Voltage

340

750

mV

Slope Compensation

0.5

A/µs

NOTES

1 All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).

3 V(IN) - V(SW), includes voltage drop across internal current sensor.

Specifications subject to change without notice.

PRELIMINARY TECHNICAL DATA