ncp1421 ON Semiconductor, ncp1421 Datasheet - Page 3

• Manufacturer Part Number: ncp1421
• Description: 600 Ma Sync-rect Pfm Step-up Dc-dc Converter Step-up Dc-dc Converter With True-cutoff And Ring-killer
• Manufacturer: ON Semiconductor

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values
(not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage
may occur and reliability may be affected.
1. This device contains ESD protection and exceeds the following tests:
2. The maximum package power dissipation limit must not be exceeded.
3. Latchup Current Maximum Rating: 150 mA per JEDEC standard: JESD78.
4. Moisture Sensitivity Level: MSL 1 per IPC/JEDEC standard: J−STD−020A.
PIN FUNCTION DESCRIPTIONS
MAXIMUM RATINGS
Power Supply (Pin 8)
Input/Output Pins (Pin 1−5, Pin 7)
Thermal Characteristics
Operating Junction Temperature Range
Operating Ambient Temperature Range
Storage Temperature Range
Pin
1
2
3
4
5
6
7
8
Human Body Model (HBM) 2.0 kV per JEDEC standard: JESD22−A114. *Except OUT pin, which is 1k V.
Machine Model (MM) 200 V per JEDEC standard: JESD22−A115. *Except OUT pin, which is 100 V.
Symbol
LBI/EN
GND
OUT
LBO
REF
BAT
FB
LX
P D +
(T
Micro8 Plastic Package
Thermal Resistance Junction−to−Air
Output Voltage Feedback Input.
Low−Battery Detector Input and IC Enable. With this pin pulled down below 0.5 V, the device is disabled and
enters the shutdown mode.
Open−Drain Low−Battery Detector Output. Output is LOW when V
shutdown mode.
1.20 V Reference Voltage Output, bypass with 1.0 mF capacitor. If this pin is not loaded, bypass with 300 nF
capacitor; this pin can be loaded up to 2.5 mA @ V
Battery input connection for internal ring−killer.
Ground.
N−Channel and P−Channel Power MOSFET drain connection.
Power Output. OUT also provides bootstrap power to the device.
C
T J(max) * T A
= 25 C unless otherwise noted.)
R qJA
Rating
http://onsemi.com
NCP1421
3
Description
OUT
= 3.3 V.
LBI
Symbol
V
R
T
is < 1.20 V. LBO is high impedance in
V
P
T
OUT
T
qJA
stg
IO
D
A
J
−40 to +150
−55 to +150
−40 to +85
−0.3, 5.5
−0.3, 5.5
Value
520
240
_C/W
Unit
mW
_C
_C
_C
V
V