OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

NCP1522BSNT1G

P1-P3P4-P6P7-P9P10-P12P13-P14
© Semiconductor Components Industries, LLC, 2010
December, 2010 − Rev. 1
1 Publication Order Number:
NCP1521B/D
NCP1522B
3 MHz, 600 mA Step-Down
DC-DC Converter
High−Efficiency, Low Ripple, Adjustable
Output Voltage
The NCP1522B step−down DC−DC converter is a monolithic
integrated circuit optimized for portable applications powered from one
cell Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The part,
available in adjustable output voltage versions ranging from 0.9 V to
3.3 V, is able to deliver up to 600 mA. It uses synchronous rectification
to increase efficiency and reduce external part count. The device also
has a built−in 3 MHz (nominal) oscillator which reduces component
size by allowing smaller inductors and capacitors. Automatic switching
PWM/PFM mode offers improved system efficiency.
Additional features include integrated soft−start, cycle−by−cycle
current limiting and thermal shutdown protection. The NCP1522B is
available in a space saving, low profile TSOP5 and UDFN6 packages.
Features
• Up to 93% Efficiency
• Allow Use of Small External Components
• Source up to 600 mA
• 3 MHz Switching Frequency
• Adjustable Output Voltage from 0.9 V to 3.3 V
• Synchronous Rectification for Higher Efficiency
• 2.7 V to 5.5 V Input Voltage Range
• Low Quiescent Current
• Shutdown Current Consumption of 0.3 mA
• Thermal Limit Protection
• Short Circuit Protection
• All Pins are Fully ESD Protected
• These are Pb−Free Devices
Typical Applications
• Cellular Phones, Smart Phones and PDAs
• Digital Still/Video Cameras
• MP3 Players and Portable Audio Systems
• Wireless and DSL Modems
• Portable Equipment
• USB Powered Devices
GND
2
VIN
1
EN
3
LX
5
FB
4
OFF ON
VIN
CIN
COUT
R1
R2
Cff
Figure 1. Typical Application − TSOP−5
L VOUT
GND
2
EN
1
VIN
3
FB
6
GND
4
OFF ON
R1
R2
VOUT
5
LX
VIN
Figure 2. Typical Application − UDFN6
COUT
Cff
L
CIN
TSOP−5
SN SUFFIX
CASE 483
http://onsemi.com
MARKING
DIAGRAM
1
5
Device Package Shipping
†
ORDERING INFORMATION
NCP1522BSNT1G TSOP−5
(Pb−Free)
3000/Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
GAN = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
1
5
GANAYWG
G
BRMG
G
1
2
3
6
5
4
UDFN6
MU SUFFIX
CASE 517AB
BR = Specific Device Code
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
NCP1522BMUTBG UDFN6
(Pb−Free)
3000/Tape & Reel
NCP1522B
http://onsemi.com
2
0 100 200 300 400 500 600
EFFICIENCY (%)
50
55
60
65
70
75
80
85
90
95
100
I
OUT,
OUTPUT CURRENT (mA)
Figure 3. Efficiency vs. Output Current
V
OUT
= 3.3 V
V
IN
= 4.2 V
T
A
= 25°C
GND
2
VIN
1
V
battery
4.7 mF
EN
3
Enable
LOGIC
CONTROL
& THERMAL
SHUTDOWN
PWM/PFM
CONTROL
I
LIMIT
REFERENCE
VOLTAGE
FB
4
LX
5
Q1
4.7 mF
18 pF
R1
R2
2.2 mH
Q2
Figure 4. Simplified Block Diagram
NCP1522B
http://onsemi.com
3
PIN FUNCTION DESCRIPTION
Pin
TSOP−5
Pin
UDFN6
Pin Name Type Description
1 3 VIN Analog /
Power Input
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.
2 2, 4 GND Analog /
Power Ground
This pin is the GND reference for the NFET power stage and the analog sec-
tion of the IC. The pin must be connected to the system ground.
3 1 EN Digital Input Enable for switching regulators. This pin is active HIGH and is turned off by
logic LOW on this pin.
4 6 FB Analog Input Feedback voltage from the output of the power supply. This is the input to the
error amplifier.
5 5 LX Analog Output Connection from power MOSFETs to the Inductor.
Figure 5. Pin Connections − TSOP−5 Figure 6. Pin Connections − UDFN6
(Top View)
1
2
3
5
4
VIN
GND
EN
LX
FB
1
2
3
6
4
EN
GND
VIN
FB
GND
PIN CONNECTIONS
5
LX
MAXIMUM RATINGS
Rating Symbol Value Unit
Minimum Voltage All Pins V
min
−0.3 V
Maximum Voltage All Pins (Note 2) V
max
7.0 V
Maximum Voltage EN, FB, LX V
max
VIN + 0.3 V
Thermal Resistance, Junction−to−Air
(with Recommended Soldering Footprint) TSOP−5
UDFN6
R
q
JA
300
260
°C/W
Operating Ambient Temperature Range T
A
−40 to 85 °C
Storage Temperature Range T
stg
−55 to 150 °C
Junction Operating Temperature T
j
−40 to 125 °C
Latchup Current Maximum Rating (T
A
= 85°C) (Note 4) Other Pins Lu $100 mA
ESD Withstand Voltage (Note 3)
Human Body Model
Machine Model
V
esd
2.0
200
kV
V
Moisture Sensitivity Level (Note 5) MSL 1 per IPC
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
A
= 25°C.
2. According to JEDEC standard JESD22−A108B.
3. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) per JEDEC standard: JESD22−A114.
Machine Model (MM) per JEDEC standard: JESD22−A115.
4. Latchup current maximum rating per JEDEC standard: JESD78.
5. JEDEC Standard: J−STD−020A.
P1-P3P4-P6P7-P9P10-P12P13-P14

NCP1522BSNT1G

Mfr. #:
Buy NCP1522BSNT1G
Manufacturer:
ON Semiconductor
Description:
Switching Voltage Regulators STEP DWN DCDC CNVRTR 3.0MHz 600mA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet