3

Package Pin Description

PACKAGE PIN #

PIN SYMBOL

FUNCTION

Electrical Characteristics: Unless otherwise stated, specifications apply for -40

≤ T

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

s Total Standby Current

Start-Up Current

0.5

1.0

mA

Operating Supply Current

11

17

mA

34

V

s PWM Section

Maximum Duty Cycle

46

48

50

%

Minimum Duty Cycle

0

%

s Undervoltage Lockout Section

Start Threshold

7.8

8.4

9.0

V

Min. Operating Voltage

After Turn On

7.0

7.6

8.2

V

Notes:

2.These parameters, although guaranteed, are not 100% tested in production.

4. Gain defined as: A =

; 0

≤ V

∆V

COMP

∆V

Sense

8L

14L

SO Narrow

SO Narrow

1

1

COMP

Error amp output, used to compensate error amplifier.

23

Error amp inverting input.

3

5

Sense

Noninverting input to Current Sense Comparator.

4

7

OSC

5

9

Gnd

Ground.

5

8

Pwr Gnd

Output driver Ground.

610

Output drive pin.

711

Output driver positive supply.

712

Positive power supply.

814

Output of 5V internal reference.

2,4,6,13

NC

No Connection.