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NCP1599GEVB

P1-P3P4-P6P7-P9P10-P12P13-P15
© Semiconductor Components Industries, LLC, 2013
April, 2013 − Rev. 1
1 Publication Order Number:
NCP1599/D
NCP1599
1 MHz, 3 A Synchronous
Buck Regulator
The NCP1599 is a fixed 1 MHz, high−output−current, synchronous
PWM converter that integrates a low−resistance, high−side P−channel
MOSFET and a low−side N−channel MOSFET. The NCP1599 utilizes
internally compensated current mode control to provide good transient
response, ease of implementation, and excellent loop stability.
The NCP1599 includes an internally fixed switching frequency
(FSW), and an internal soft−start to limit inrush current.
Other features include cycle−by−cycle current limiting,
short−circuit protection, power saving mode and thermal shutdown.
Features
• Internal 140 mW High−Side P−Channel and 90 mW Low−Side
N−Channel MOSFET
• Fixed 1 MHz Switching Frequency
• Cycle−by−Cycle Current Limiting
• Hiccup Mode Short−Circuit Protection
• Overtemperature Protection
• Internal Soft−Start
• Start−up with Pre−Biased Output Load
• Adjustable Output Voltage Down to 0.8 V
• Power Saving Mode During Light Load
• These are Pb−Free Devices
Applications
• DSP Power
• Hard Disk Drivers
• Computer Peripherals
• Home Audio
• Set−Top Boxes
• Networking Equipment
• LCD TV
• Wireless and DSL/Cable Modem
• USB Power Devices
Device Package Shipping
†
ORDERING INFORMATION
DFN6
CASE 506AH
MARKING
DIAGRAM
http://onsemi.com
1
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
1599
AYWW
G
1
NCP1599MNTWG DFN6
(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 Specifications
Brochure, BRD8011/D.
COMP
VCC
VCCP
FB
GND
LX
1
2
3
6
5
4
(Top View)
PIN CONNECTIONS
NCP1599
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2
BLOCK DIAGRAM
Figure 1. Block Diagram
−
+
+
+
−
Soft−Start
Power Reset
UVLO
THD
Hiccup
gm
PWM Control
Logic
OSC
+
−
CA
+
NCP1599
VCCP
LX
GND
VCC
FB
Vref
PMOS
M1
COMP
PIN DESCRIPTIONS
Pin No Symbol Description
1 FB Feedback input pin of the Error Amplifier. Connect a resistor divider from the converter’s output
voltage to this pin to set the converter’s output voltage.
2 GND Ground pin. Connect to thermal pad.
3 LX The drains of the internal MOSFETs. The output inductor should be connected to this pin.
4 V
CCP
Power input for the power stage
5 V
CC
Input supply pin for internal bias circuitry. A 0.1 mF ceramic bypass capacitor is preferred to connect
to this pin.
6 COMP Output of the Gm Amplifier and compensation node. Connect a series R−C network from this pin to
GND for control loop regulation.
EP PAD Exposed pad of the package provides both electrical contact to the ground and good thermal contact
to the PCB. This pad must be soldered to the PCB for proper operation.
NCP1599
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3
APPLICATION CIRCUIT
VCCP
VCC
COMP
LX
GND
FB
V
in
3.3 V − 5.5 V
V
out
0.8 V − 3.3 V
Figure 2. NCP1599 Application Circuit
R1
0.1 mF
C
C
3.3 nF
R
C
3.65 k
R
2
10 k
R
1
= R
2
x (V
out
/ 0.8) − 1)
C
2
2 x 22 mF
L
1
(Note 1)
1.5 − 4.7 mH
C
1
22 mF
ABSOLUTE MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Pin (Pin 4, 5) to GND V
in
6.5
−0.3 (DC)
−1.0 (t < 100 ns)
V
LX to GND V
in
+ 0.7
V
in
+ 1.0 (t < 20 ns)
−0.7 (DC)
−5.0 (t < 100 ns)
V
All other pins 6.0
−0.3 (DC)
−1.0 (t < 100 ns)
V
Operating Temperature Range TA −40 to +85 °C
Junction Temperature TJ −40 to +150 °C
Storage Temperature Range TS −55 to +150 °C
Thermal Resistance Junction−to−Air (Note 2) RqJA 68.5 °C/W
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. See External Component Reference Data for inductor selection.
2. RqJA measured on approximately 1x1 inch sq. of 1 oz. Copper.
P1-P3P4-P6P7-P9P10-P12P13-P15

NCP1599GEVB

Mfr. #:
Buy NCP1599GEVB
Manufacturer:
ON Semiconductor
Description:
Power Management IC Development Tools NCP1599 EVB
Lifecycle:
New from this manufacturer.
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