NCP1337 查看數據表（PDF） - ON Semiconductor

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NCP1337

PWM Current−Mode Controller for Free Running Quasi−Resonant Operation

ON Semiconductor 

NCP1337

+

−

+

5V

+

−

+

3V

Permanent Latch

Enable

Vin

Vdd

3.3 meg

Rhyst

11 k

10 mA current source activated

when VBOK is high

BO

+

−

+

500 mV

BOK

Figure 8. Internal Implementation of BO Pin

PACKAGE DIMENSIONS

SOIC−7

D SUFFIX

CASE 751U−01

ISSUE C

−A−

8

5

−B− S

0.25 (0.010) M B M

1

4

G

C

R X 45_

−T−

H

SEATING

PLANE

D 7 PL

0.25 (0.010) M T B S A S

K

M

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A AND B ARE DATUMS AND T

IS A DATUM SURFACE.

4. DIMENSION A AND B DO NOT INCLUDE

MOLD PROTRUSION.

5. MAXIMUM MOLD PROTRUSION 0.15 (0.006)

PER SIDE.

MILLIMETERS INCHES

DIM MIN MAX MIN MAX

A 4.80 5.00 0.189 0.197

B 3.80 4.00 0.150 0.157

C 1.35 1.75 0.053 0.069

D 0.33 0.51 0.013 0.020

G

1.27 BSC

0.050 BSC

H 0.10 0.25 0.004 0.010

J 0.19 0.25 0.007 0.010

J

K 0.40 1.27 0.016 0.050

M 0_ 8_ 0_ 8_

N 0.25 0.50 0.010 0.020

S 5.80 6.20 0.228 0.244

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