Block Diagram

Pin Assignment

Pin Description

Pin No.

Pin Name

Description

1

VOUT

mFto10mF low ESR

ceramic capacitor placed as close as possible to the pin for best performance.

2

GND

Ground. This pin is the voltage reference for the regulator output voltage.

3EN

Device On/Off Control

1: Enable

0: Disable

Pin must not be left floating.

4

C-

Capacitor Negative Pin. Flying capacitor negative terminal.

5

VIN

mFto10mF low ESR ceramic

capacitor.

6

C+

Capacitor Positive Pin. Flying capacitor positive terminal.

HT7936A/HT7936B

Rev 1.00

2

December 28, 2009

V O U T G N D

T o p V i e w

C +

C -

E N

1

2

3

4

6

5

V I N

G N D

E N

V O U T

C +

C -

V I N

V R E F

1 M H z O S C

S h o r t C i r c u i t

P r o t e c i o n

M 1

M 2

M 4

M 3

N o t e :

C o n t r o l

D u r i n g o p e r a t i o n t h e f o l l o w i n g s e q u e n c e o c c u r s :

1 . M 1 , M 3 O n / M 2 , M 4 O f f

2 . M 2 , M 4 O n / M 1 , M 3 O f f