NCP729

http://onsemi.com

2

IN

OUT

BANDGAP

REFERENCE

ACTIVE

DISCHARGE

MOSFET

DRIVER WITH

CURRENT LIMIT

THERMAL

SHUTDOWN

EEPROM

UVLO

ENABLE

LOGIC

EN

EN

GND

AUTO LOW

POWER MODE

Figure 2. Simplified Schematic Block Diagram

Table 1. PIN FUNCTION DESCRIPTION

Pin No.

4−bump CSP

Pin Name

Description

B2

OUT

Regulated output voltage pin. A small 1 mF ceramic capacitor is needed from this pin to ground

to assure stability.

B1

GND

Power supply ground. Soldered to large copper plane allows for better heat dissipation.

A1

EN

Enable pin. Driving EN over 0.9 V turns on the regulator. Driving EN below 0.4 V puts the regu-

lator into shutdown mode.

A2

IN

Input pin. A small capacitor is needed from this pin to ground to assure stability.

Table 2. ABSOLUTE MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Input Voltage (Note 1)

−0.3 V to 6 V

V

Output Voltage

V

Enable Input

V

Output Short Circuit Duration

∞

s

Maximum Junction Temperature

125

°C

Storage Temperature

−55 to 150

°C

ESD Capability, Human Body Model (Note 2)

2000

V

ESD Capability, Machine Model (Note 2)

200

V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.

2. This device series incorporates ESD protection and is tested by the following methods:

ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)

ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)

Latchup Current Maximum Rating tested per JEDEC standard: JESD78.