ncp1522b ON Semiconductor, ncp1522b Datasheet - Page 3

• Manufacturer Part Number: ncp1522b
• Description: 3 Mhz, 600 Ma Step-down Dc-dc Converter
• Manufacturer: ON Semiconductor

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. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T
2. According to JEDEC standard JESD22-A108B.
3. This device series contains ESD protection and exceeds the following tests:
4. Latchup current maximum rating per JEDEC standard: JESD78.
5. JEDEC Standard: J-STD-020A.
PIN FUNCTION DESCRIPTION
MAXIMUM RATINGS
Moisture Sensitivity Level (Note 5)
TSOP-5
Minimum Voltage All Pins
Maximum Voltage All Pins (Note 2)
Maximum Voltage EN, FB, LX
Thermal Resistance, Junction-to-Air
Operating Ambient Temperature Range
Storage Temperature Range
Junction Operating Temperature
Latchup Current Maximum Rating (T
ESD Withstand Voltage (Note 3)
(with Recommended Soldering Footprint)
Human Body Model
Machine Model
Pin
Human Body Model (HBM) per JEDEC standard: JESD22-A114.
Machine Model (MM) per JEDEC standard: JESD22-A115.
1
2
3
4
5
Figure 5. Pin Connections - TSOP-5
UDFN6
Pin
2, 4
3
1
6
5
GND
VIN
EN
1
2
3
Pin Name
(Top View)
GND
VIN
EN
FB
LX
Rating
A
5
4
= 85°C) (Note 4) Other Pins
Power Ground
Analog Output
Analog Input
LX
FB
Power Input
Digital Input
Analog /
Analog /
Type
PIN CONNECTIONS
http://onsemi.com
Power supply input for the PFET power stage, analog and digital blocks. The
pin must be decoupled to ground by a 10 mF ceramic capacitor.
This pin is the GND reference for the NFET power stage and the analog
section of the IC. The pin must be connected to the system ground.
Enable for switching regulators. This pin is active HIGH and is turned off by
logic LOW on this pin.
Feedback voltage from the output of the power supply. This is the input to the
error amplifier.
Connection from power MOSFETs to the Inductor.
NCP1522B
3
TSOP-5
UDFN6
Figure 6. Pin Connections - UDFN6
Symbol
GND
V
V
R
V
V
MSL
T
VIN
T
Lu
max
max
EN
T
esd
min
qJA
stg
A
j
Description
1
2
3
6
5 LX
4
-55 to 150
-40 to 125
VIN + 0.3
-40 to 85
A
$100
Value
-0.3
= 25°C.
300
260
200
7.0
FB
GND
2.0
1
per IPC
°C/W
Unit
mA
kV
°C
°C
°C
V
V
V
V