R2A20101BM/NP

REJ03D0790-0300 Rev.3.00 May 14, 2008

Page 2 of 9

Block Diagram

–

+

+

–

Vref

× 10%

Error Amplifier

Power Good

Comparator

Shut Down

SS

Ref 1.15V

UVLO

SHDN

ON/

OFF

PWM

Control

Logic

LX

VIN

PGND

CRFB

VFB

AGND

EAO

VREF

PWGD

1.3M

Ω

1M

Ω

1.5k

Ω

Absolute Maximum Ratings

(Ta = 25°C)

Item

Symbol

Ratings

Unit

Note

Power supply voltage

6

V

1

ON/

OFF, PWGD, EAO, VREF,

LX, CRFB, VFB terminal voltage

V

1

PGND terminal voltage

–0.3 to +0.3

V

1

Operating ambient temperature

Topr(Ta)

–40 to +85

°C

Junction temperature 1

Tjmax1

+125

°C

Junction temperature 2

Tjmax2

+150

°C

2

Storage temperature

Tstg

–55 to +150

°C

Notes: 1. Rated voltages are with reference to the AGND pin.

2. Operation by Tjmax2 is made within 24 hours through life.